Morphology, Systematics, and Biology of The Spanish Mackerels
Morphology, Systematics, and Biology of The Spanish Mackerels
                                                                 1
                                         BRUCE    B.   COLLE'ITE AND JOSEPH     L. Russo 2
ABSTRACT
               The Spanish mackerels and seerfishes of the genus Scomberomorus constitute the most speciose
               group of the 44 genera in six families that comprise the suborder Scombroidei. As in higher scom-
               brids, Scomberomorus, Acanthocybium, and Grammatorcynus have a well-developed median keel
               on the caudal peduncle, but there is no bony support as is present in the Sardini and Thunnini.
               Acanthocybium and Scomberomorus share 17 osteological characters and are considered sister-
               groups. The relationships of Grammatorcynus are not clear but it is clearly more primitive than
               Scomberomorus; therefore, we have used it as the outgroup for a cladistic analysis of Scomberomorus.
                  Scomberomorus differ from all other scombrids in having a spatulate anterior extension of the
               vomer. There are 18 species in the genus, nearly 40% of the 49 species of scombrids: Eastern At-
               lantic-tritor (Cuvier); western Atlantic-brasiliensis Collette, Russo and Zavala-Camin, cavalla
               (Cuvier), maculatus (Mitchill), and regalis (Bloch); eastern Pacific-concolor Lockington and
               sierra Jordan and Starks; and Indo-West Pacific-commerson (Lacepoo.e), guttatus (Bloch and
               Schneider), koreanus (Kishinouye), lineolatus (Cuvier), munroi Collette and Russo, multiradiatus
               Munro, niphonius (Cuvier), plurilineatus Fourmanoir, queenslandicus (Macleay), semifasciatus
               (Macleay), and sinensis (Lacepede). A cladistic analysis of 58 characters shows six monophyletic
               species-groups in Scomberomorus. The sinensis group is monotypic and is defined by the presence of
               an abrupt downward curve in the lateral line under the first dorsal fin and by its retention of a swim
               bladder. The commerson species-group contains commerson, niphonius, queenslandicus, and cavalla
               and is defined by the presence of an intercalar spine of at least moderate length. Scomberomorus
               cavalla and S. commerson share two additional specializations, the pterosphenoid bones are close
               together and the lateral line curves abruptly downward under the second dorsal finlets. The munroi
               species-group is monotypic and is defined by the loss of the anterior process on the outer surface of
               the head of the maxilla. The semifasciatus species-group contains semifasciatus, plurilineatus, and
               lineolatus, and is defined by the presence of a greatly expanded posterior end of the maxilla. Scom-
               beromorus lineolatus and S. semifasciatus share an additional specialization, a wide parasphenoid,
               but this character state appears independently in several other lines. The guttatus species-group
               contains guttatus, multiradiatus, and koreanus and is defined by a high supraoccipital crest. Auxil-
               iary branches extend off the anterior part of the lateral line in S. guttatus and S. koreanus. The
               regalis species-group contains regalis, tritor, maculatus, concolor, sierra, and brasiliensis and is
               defined by the presence of nasal denticles. All but the most primitive species in this group (S. tritor)
               have an artery arising from the fourth left epibranchial artery. The four most advanced species (all
               except tritor and maculatus) have developed a long posterior process on the pelvic girdle. The three
                most advanced species (sierra, brasiliensis, and regalis) have a coeliaco-mesenteric shunt connect-
               ing the fourth right epibranchial artery with the coeliaco-mesenteric artery.
The purposes of this paper are to define the 18                      nus, and rely on previous work by Kishinouye
species of Scomberomorus, to clarify their rela-                     (1923), Munro (1943), Mago Leccia (1958), and
tionships, and to assess the systematic position                     Devaraj (1977).
of Scomberomorus within the Scombridae. The                            The Spanish mackerels have been placed by
methods used are similar to those of Collette and                    Collette and Chao (1975) and Collette and Russo
Chao (1975) in a revision of the bonitos and of                      (1979) in a tribe (the Scomberomorini) along with
Gibbs and Collette (1967) in a revision of Thun-                     Acanthocybium and Grammatorcynus, interme-
                                                                     diate between the more primitive mackerels
  1 National Marine Fisheries Service, Systematics Laboratory,       (Scombrini) and the more advanced bonitos (Sar-
National Museum of Natural History, Washington, DC 20560.            dini). Acanthocybium is clearly the specialized
  2National Marine Fisheries Service, Systematics Laboratory,
National Museum of Natural History, Washington, DC 20560,            sister group of Scomberomorus, but the phylo-
and Department of Biological Sciences, The George Washington         genetic position of Grammatorcynus has been
University, Washington, DC 20006; present address: Office
of Information Research Resource Management, Smithsonian             unclear.
Institution, Washington, DC 20560.                                     Until recently, the number of valid species of
Manuscript accepted November 1983.                                                                                        545
FISHERY BULLETIN: VOL. 82, NO.4, 1984.
                                                                             FISHERY BULLETIN: VOL. 82. NO. 4
Scomberomorus has been in doubt. In his revision      cies of Scomberomorus based on a cladistic
of Australian species, Munro (1943) recognized 15     analysis of characters described in the first part,
species in the world (excluding Cybiosarda ele-       using Grammatorcynus as the plesiomorphic
gans, a bonito, and Lepidocybium flauobrunneum,       out-group.
a gempylid). Fraser-Brunner (1950) recognized
only nine species, placing five valid species in
synonymy. In the course of this revision, we have                       MATERIAL
discovered two previously undescribed species, S.
brasiliensis (Collette et al. 1978), which was con-      The material examined is listed by general lo-
fused with S. maculatus, and S. munroi (Collette      cality under four or five headings in the accounts
and Russo 1980), which was confused with S.           for each of the 18 species of Scomberomorus.
niphonius.                                            Comparative material of Acanthocybium and
   Emphasis was placed on obtaining fresh or          Grammatorcynus is listed at the end of this
frozen specimens for dissection from several pop-     section. The numbers under these headings are
ulations of each species. Standard counts and         not additive but are included to give some degree
measurements were taken, color pattern was            of confidence in the morphological data presented
recorded, and a search made for parasitic cope-       in the body of the paper. "Total specimens" is the
pods. Results of the copepod study have been          total number of individuals examined whether
reported by Cressey and Cressey (1980), and           preserved, dissected, or skeletonized. "Dissected"
analysis of these data from a host-parasite point     are fresh or frozen specimens for which data on
of view has been completed (Cressey et al. 1983;      the viscera and usually other characters were
Collette and Russo 1985). The viscera were ex-        recorded. Specimens were subsequently made in-
amined and illustrated in situ following remov-       to skeletons. "Measured and counted" includes
al of an oval portion of the ventral body wall.       specimens that were subsequently dissected as
The viscera then were removed and drawings            well as the preserved museum specimens used for
were made of the liver and other selected organs.     detailed morphometric and meristic examination.
The kidneys and anterior parts of the arterial        "Counts only" are additional museum specimens
system then were drawn. Counts of ribs and            used only for meristic examination. "Skeletons"
intermuscular bones were made and the speci-          refer to all the skeletal material examined, both
men was then skeletonized, facilitated by immer-      specimens that were dissected and additional
sion in hot water.                                    skeletal material already in museums. Asterisks
   The base measurement for morphometric com-         indicate type-specimens of nominal species.
parisons of fresh, frozen, and preserved specimens       Material was examined from the following
was millimeters fork length (mm FL).                  institutions:
   This paper is divided into three major parts.
The first part contains descriptions and illustra-    AMNH         American Museum of Natural His-
tions of morphometry, meristic characters, soft                      tory, New York
anatomy, and osteology of the species of Scom-        AMS          Australian Museum, Sydney
beromorus. Comparisons with Acanthocybium             ANSP         Academy of Natural Sciences,
solandri and Grammatorcynus bilineatus are in-                       Philadelphia
cluded. All references to Grammatorcynus in this      BMNH         British Museum (Natural History),
paper refer to G. bilineatus. The validity of the                    London
second species, G. bicarinatus, was only estab-       CAS          California Academy of Sciences, San
 lished recently (Collette 1983). The second part                    Francisco
comprises separate species accounts including         CSIRO        CSIRO Marine Biological Laborato-
synonymy, types of nominal species, diagnosis                        ry, Cronulla, N.S.W, Australia
 (based on characters from the first section), de-    DASF         Department of Agriculture, Stock,
scription, size, color pattern, summaries of pub-                    and Fisheries, Port Moresby, Pap-
lished information on biology and interest to                        ua New Guinea
 fisheries, geographic distribution, and material     FMNH         Field Museum of Natural History,
 examined. The most important references to each                      Chicago
 species are marked with asterisks in the syn-        HUMZ         Laboratory of Marine Zoology,
 onymies. The third part is an analysis of the                       Hokkaido University, Hakodate,
 relationships of Acanthocybium and the spe-                         Hokkaido
546
COLLETTE and RUSSO: SPANISH MACKERELS
GCRL    Gulf Coast Research Laboratory and                     (2); Australia (1); Marshall Is. (1); E
          Museum, Ocean Springs, Miss.                         Pacific (2).
LACM    Los Angeles County Museum of                 counts:   36.
          Natural History, Los Angeles               diss.:    11 (943-1,420): W Atlantic (7); Indian O.
MCZ     Museum of Comparative Zoology,                         (3); Revillagigedos (1).
           Harvard
MNHN    Museum National d'Histoire Natu-             Grammatorcynus bilineatus. -Total 52 (23.5-575
          relle, Paris                               mmFL).
MPIP    Museu de Pesca do Instituto de Pes-          meas.: 34 (226-575): Red Sea (13, *Thynnus
           ca, Santos                                        bilineatus); Indian Ocean ? (1); Anda-
MSUF    Museo de La Specola, Universita di                   man Sea (3); Celebes (1); New Guinea
           Firenze, Florence                                 (3); Australia (8); Philippine Is. (5,
MZUSP   Museu de Zoologia da Universidade                    *Nesogrammus piersoni); Solomon Is.
           de Sao Paulo, Sao Paulo                           (1); Caroline Is. (3); Marshall Is. (8);
NHMV    Naturhistorisches Museum, Vienna                     Fiji (2).
NMC     National Museum of Natural Sci-              counts: 44.
           ences, Ottawa                             diss.:  10 (382-453): Indian Ocean? (1); Timor
QM      Queensland Museum, Brisbane                          Sea (2); Bismarck Arch. (1); Marshall Is.
RMNH    Rijksmuseum van Natuurlijke His-                     (2); Queensland, Australia (4).
           torie, Leiden
ROM     Royal Ontario Museum, Toronto                Grammatorcynus bicarinatus. -Total 9 (306-825
RUSI    J. L. B. Smith Institute of Ichthyolo-       mmFL).
           gy, Rhodes University, Grahams-           meas.: 9 (306-825): Western Australia (5);
           town, South Africa                                Queensland (4).
SAM     South African Museum, Capetow~               counts: 9.
SIO     Scripps Institution of Oceanography,         diss.:  2 (521 and 563): Queensland.
           La Jolla, Calif.
TABL    Miami Laboratory (formerly Tropi-
           cal Atlantic Biological Laborato-               KEY TO GRAMMATORCYNUS,
           ry), NMFS, Miami, Fla. [Most                      ACANTHOCYBIUM, AND
           specimens now at UE]                                    SCOMBEROMORUS
UDONECI Universidad de Oriente, Nueva Es-
           parta, Centro de Investigaciones,          la. Two lateral lines, the lower joining the
           Venezuela                                        upper behind the pectoral fin base and
UF      Florida State Museum, University                    at the caudal fin base; interpelvic pro-
           ofFlorida, Gainesville                           cess single; teeth in jaws slender, coni-
UMMZ    University of Michigan Museum of                    cal, not compressed; vertebrae 31 ....
           Zoology, Ann Arbor                               .................... Grammatorcynus 2
USNM    United States National Museum,                lb. One lateral line; interpelvic process
           Washington, D.C.                                 double; teeth in jaws strong, com-
WAM     Western Australia Museum, Perth                     pressed, almost triangular or knife-
ZMA     Zoological Museum, Amsterdam                        like; vertebrae 39-64                     3
ZMH     Zoologisches Institut und Zoolog-
           isches Museum, Hamburg                     2a. Gill rakers 14-15; small eye, 3-4% FL;
ZMK     Zoological Museum, Copenhagen                       frequently with small dark spots on
ZSI     Zoological Survey of India, Calcutta                lower sides of body                    .
                                                            ..... G. bicarinatus (Quoy and Gaimard)
Acanthocybium solandri.-Total 47 (536-1,500           2b. Gill rakers 19-24; large eye, 7-9% FL;
mmFL).                                                      seldom with dark spots on sides of
meas.: 26 (536-1,500): W Atlantic (8); St. He-              body               G. bilineatus (Riippell)
        lena (1); S. Africa (3); Indian Ocean (4);
        Caroline Is. (6); 'fuamotu Is. (1); E Pa-      3a. Snout as long as rest of head; no gill
        cific (3).                                           rakers; 23-27 spines in first dorsal fin;
heads: 8 (202-380): Bahama Is. (1); St. Helena               posterior end of maxilla concealed un-
                                                                                                     547
                                                                            FISHERY BULLETIN: VOL. 82, NO.4
      der preorbital bone; vertebrae 62-64 ..        lOa. First dorsal fin black only on first 5-7
      ....... Acanthocybium solandri (Cuvier)               interspinous membranes, white pos-
3b. Snout much shorter than rest of head;                   teriorly; intestine straight, with no
      gill rakers 1-27; 12-22 spines in first               folds; total vertebrae 48-50           .
      dorsal fin; posterior end of maxilla                  ·                    S. niphonius (Cuvier)
      exposed; vertebrae 41-56              .        lOb. First dorsal fin black to, or almost to,
     ...................... Scomberomorus 4                  posterior end; intestine with 2 loops
                                                             and 3 limbs; total vertebrae 50-52 ....
4a. Lateral line abruptly curving down be-                 ·             S. munroi Collette and Russo
      low first or second dorsal fin; verte-
      brae 41-46                               5     lIa. Lateral line with many small auxiliary
4b. Lateral line straight or descending gra-                branches anteriorly                   12
      dually posteriorly; vertebrae 44-56 .... 7     lIb. Lateral line without auxiliary branches
                                                            or with only a few anteriorly         13
5a. Lateral line abruptly curving down be-
      low first dorsal fin; total gill rakers        12a. Dorsal fin spines 15-18, usually 16 or
      on first arch 12-15; caudal vertebrae                more; intestine with 2 loops and 3
      21-22               S. sinensis (Lacepede)           limbs; total vertebrae 47-52, usually
5b. Lateral line abruptly curving down be-                  48 or more; head longer, 20.2-21.5%
      low second dorsal fin; total gill rakers             FL; body depth less, 22.8-25.2% FL ...
      on first arch 2-13; caudal vertebrae                 ·       S. guttatus (Bloch and Schneider)
      23-27 .. ,                               6     12b. Dorsal fin spines 14-17, usually 15 or
                                                           fewer; intestine with 4 loops and 5
6a. Total gill rakers on first arch 7-13, usual-            limbs; total vertebrae 46-47, usually
      ly 9 or more; spines in first dorsal fin             46; head shorter, 19.7-20.4% FL; body
      12-18, usually 15 or fewer; precaudal                 depth greater, 24.4-26.7% FL          .
      vertebrae 16-17          S. cavalla (Cuvier)         ·                S. korean us (Kishinouye)
6b. Total gill rakers on first arch 3-8, usual-
      ly 6 or fewer; spines in first dorsal fin      13a. Sides of body with spots and at least one
      15-18, usually 16 or more; precaudal                  stripe, the stripes may be short, wavy
      vertebrae 19-20                           .           or interrupted                          14
     ............... S. commerson (Lacepede)         13b. Sides of body without any stripes, spots
                                                            usually present                         16
7a. Total gill rakers on first arch 21-27; no
      bars on body .... S. concolor Lockington       14a. One long stripe on sides with spots or
7b. Total gill rakers on first arch 1-18; spots,            interrupted lines above and below the
      bars, or other markings usually pres-                 stripe; total vertebrae 47-48, usually
      ent on sides of body                       8          48; total gill rakers on first arch 12-18,
                                                            usually 15 or more .... S. regalis (Bloch)
8a. Anal fin rays 25-29; second dorsal fin           14b. Sides with several short stripes; total
     rays 21-25, usually 23 or more; gill                   vertebrae 44-47, usually 46; total gill
     rakers on first arch 1-4; total verte-                 rakers on first arch 9-15, usually 14
     brae 54-56; no pattern on body        .                or fewer                                   15
     ..                S. multiradiatus Munro
8b. Anal fin rays 15-24; second dorsal fin           15a. Sides with a series of short straight
      rays 15-24; total gill rakers on first                stripes and few if any spots; total gill
     arch 3-18; total vertebrae 44-53; sides                rakers on first arch usually 11 or
      of body usually with spots or other                   fewer; second dorsal fin rays 15-19,
      markings                               9              usually 18 or fewer; distance from 2D
                                                            origin to caudal base 46.2-54.5% FL,
9a. Dorsal fin spines 19-22, usually 19 or                  x 50.0%              S. lineolatus (Cuvier)
     more                             ·    10        15b. Sides with a series of short wavy mark-
9b. Dorsal fin spines 13-19, usually 18 or                  ings plus many small spots; total gill
     fewer                                 11               rakers on first arch usually 12 or more;
548
COLLE'ITE and RUSSO: SPANISH MACKERELS
                                                                                                     549
01
01
o
     a                                                                                 b
c d
                                                                                                                                                                          i::l
                                                                                                                                                                          til
                                                                                                                                                                          i
                                                                                                                                                                          CJ
                                                                                                                                                                          r
                                                                                                                                                                          .[15
     FIGURE I.-Scanning electron photomicrographs of nasal dentides (a-b) and villiform teeth over the deithrum (c-d) in Scomberomorus sierra, GulfofCalifornia, 353 mm   ...~
                                                              FL, USNM 217368. a, c. 50x. b, d. 250x.
COLLETTE and RUSSO: SPANISH MACKEREUl
TABLE I.-Morphometric comparison of the species of Scomberomorus. Means as thousandths offork length or head length. Species
                arranged alphabetically by the        first three letters of their names. Ranges for the species given in Tables 13-30,
    Character           bra   cay com con       gut   kor   lin   mac   mul   mun   nip    plu   que   reg   sem   sie   sin   tn     Min. spp.     Max. spp.
Fork length
  Snoul-A               538   539   542   524   517   493   507   536   505   546   563    502   525   548   506   537   584   533   493kor        584 sin
  Snout-20              511   506   510   507   481   467   501   503   477   528   536    473   501   521   472   510   559   513   467kor        559 sin
  Snout-10              242   258   243   236   239   242   252   241   249   222   248    221   234   255   245   241   291   248   221 mun,      291 sin
                                                                                                                                            plu
  Snout-P2              253   258   257   242   251   248   245   257   243   249   263    233   251   265   250   252   290   266   233plu         290 sin
  Snout-P,              219   232   237   209   209   210   212   217   213   201   225    193   229   234   219   221   258   222   193plu       . 258sin
  P,-P2                 108   106    96   100   106   114    93   110   102   105   105    103    99   109   105   104   113   111    93 lin        114kor,
                                                                                                                                                           sin
  Head length     213         223   229   202   205   208   206   212   208   198    216   193   220   223   213   212   255   217   193piu         255 sin
  Max. body depth 198         191   187   187   209   237   181   197   229   190    172   206   188   197   211   190   218   206   172 nip        237kor
  Max. body width  82          89    94    89    93   100    97   .91    95   100     84    97   101    91    94    84   102    90    82 bra        104 mun
  P, length       123         129   122   125   109   133   139   129   131   109    111   123   120   126   147   123   158   134   109 gut,       158 sin
                                                                                                                                           mun
  P21ength           45        65    56    50    59    60    55    52    40    54     68    51    55    56    50    53    83    60    40mul          83 sin
  Pz insertion-vent 273       271   273   261   251   227   241   263   247   281    285   243   254   267   237   267   273   250   237sem         285 nip
  Pztip-vent        225       212   217   212   191   184   185   211   207   225    218   186   198   210   187   222   189   190   184 kor        225 bra,
                                                                                                                                                           mun
  Base 10               263   245   261   254   235   218   231   256   216   307    282   240   263   257   210   260   260   262   210 sem        307 mun
  Height 20             117   109   103   111   131   166   124   125   167   112     98   148   114   114   159   123   145   126    98 nip        167 kor,
                                                                                                                                                           mul
  Base 20               118   106   104   127   141   160   114   128   178   115    113   128   113   114   138   120   121   122   104com         178mul
  Height anal           114   106   100   107   127   160   117   118   164   108     97   135   112   112   156   117   145   125    97 nip        184mul
  Base anal             113   108   100   134   133   154   122   123   216   105    107   125   108   110   145   119   122   120   100 com        216 mul
  Snout (fleshy)         82    87    89    72    72    70    81    80    77    77     81    67    86    87    81    79    97    81    67plu          97 sin
  Snout (bony)           72    79    81    63    84    62    74    70    67    70     75    59    80    79    72    70    91    72    59plu          91 sin
  Maxilla length        123   132   131   113   108   111   113   119   125   104    120    96   125   124   119   121   147   123    96plu         147 sin
  Postorb~al             95    98   104    96    96   101    91    96    86    90    102    94   102    98    95    98   117    96    86mul         117 sin
  Orb~ (fleshy)          37    38    35    32    37    34    32    34    34    25     34    34    31    41    35    33    35    38    25mun          41 reg
  OrM(bony)              54    51    49    48    53    50    48    51    52    39     47    45    49    56    51    49    52    53    37mun          56 reg
  Interorb~al width      57    60    62    49    59    60    57    56    58    56     57    56    63    58    57    55    63    59    49 con         63 que,
                                                                                                                                                           sin
  20-caudal             490   477   481   484   527   550   500   487   494   468    465   548   496   480   517   475   445   476   445 sin        550kor
Head length
  Snout (fleshy)        386   392   390   353   351   339   395   376   372   386    376   348   391   390   378   371   382   376 339kor           395 lin
  Snout (bony)          343   357   355   313   310   301   359   335   321   351    346   306   363   351   339   331   355   333 301 kor          363 que
  Maxilla length        581   591   571   555   526   532   547   562   603   521    553   496   568   556   555   570   578   568 496 plu          603 mul
  Postorb~a1            446   438   455   476   484   489   442   454   415   456    473   485   463   439   447   461   460   443 415 mul          489kor
  Orb~   (fleshy)       175   168   147   159   174   157   156   160   165   134    150   179   142   178   162   158   138   173 129 mun          178 reg
  Orb~   (bony)         249   229   211   226   252   238   231   242   252   199    215   232   223   247   238   235   202   245 191 mun          252 gut,
                                                                                                                                                            mul
  Interorb~al   width   270   268   270   241   284   292   276   266   280   282    264   290   286   262   267   253   249   272   241 con        292 kor
                                                                                                                                                          551
                                                                                      FISHERY BULLETIN: VOL. 82, NO.4
anatomy. The other meristic characters are dis-              4 Australian species), Silas (1963, Gramma-
cussed in the relevant osteological sections of the          torcynus), Mota Alves and Tome (l967a, S. caval-
paper.                                                       la), Mota Alves (1969, S. brasiliensis), Tongyai
                                                             (l971a, S. guttatus and S. commerson), and Col-
                    Soft Anatomy                             lette and Russo (1979, preliminary review of the
                                                             genus).
   The relative position, shape, and size of the                The anterior end of the liver abuts the trans-
various internal organs provide valuable diag-               verse septum anteriorly in the body cavity. The
nostic characters. For purposes of discussion, the           liver has three lobes. The left and right lobes are
characters in the soft anatomy are divided into              longer than the middle lobe in all three genera
five sections: viscera, vascular system, urogenital          (Fig. 4). The right lobe is longest in Scomberomo-
system, olfactory organ, and pharyngeal muscles.             rus and Grammatorcynus. The left and right
                                                             lobes are about equal in length in Acanthocyb-
VISCERA                                                      ium. Two efferent (venous) vessels lead directly
                                                             from the anterior surface of the liver into the
  Emphasis was placed on the appearance of the               sinus venosus in all species. The short esophagus
viscera in ventral view, after removal of an oval            leads into the stomach. The stomach is sometimes
segment of the belly wall (Figs. 2, 3). Previous             visible in ventral view but this is dependant on
papers on the viscera include Kishinouye (1923, 5            the amount of food present, rather than showing
Japanese species of Scomberomorus, and Acan-                 differences between species. The pyloric portion
thocybium and Grammatorcynus), Munro (1943,                  of the intestine arises from the anterior end ofthe
                                                                                                        ·· ..
                                                                                                         ·· ..
                                                                                                          ···.
                                                                                                         ···
                                                                                                          ····
                                                                                                           ···
                                                                                                            ····
o ~ Q
                                                                                      -
                                                             a                    b                           c
                                                                   LIVER                           I NTESTI N E
552
COLLETrE and RUSSO: SPANISH MACKEREl.':)
stomach. At this point the main branches of the           The efferent branchial (epibranchial) arteries
pyloric caeca join the intestine. The caeca branch     and coeliaco-mesenteric artery form a unit at the
and form a dense dendritic conglomeration, the         anterior end of the dorsal aorta (Figs. 6, 7). Two
caecal mass. Cells in the pyloric caeca are histo-     anterior epibranchials on each side unite to form
logically similar to those in the intestine and        a common trunk, and these trunks join as the "Y"
produce enzymes such as lipase, maltase, trypsin,      of the aorta beneath the posterior part of the
and pepsin (Mota Alves and Tome 1970). The             skull or the first or second vertebra. The posterior
intestine continues posteriorly and its course         two epibranchials of each side unite immediately
appears to be species-specific. The intestine may      before they join the aorta, usually ventral to the
be a simple straight tube from stomach to anus,        second or third vertebra. As the aorta proceeds
have two descending and one ascending arm, or          posteriorly, it gives rise to the large coeliaco-
have four bends with three descending and two           mesenteric artery on the right side ventral to
ascending arms. The spleen is prominent in ven-        the second to fourth vertebrae. The coeliaco-
tral view in most species but is hidden in others.     mesenteric artery has two or three main branches
The gall bladder, an elongate tubular sac which        which lead to the liver and other viscera.
is usually green, arises from the right lobe of the       The postcardinal vein runs along the ventral
liver and usually lies along the first descending      surface of the kidney (Fig. 8) from the vicinity
arm of the intestine on the right side. A swim         of the first complete haemal arch anteriorly in
bladder is present in Grammatorcynus, Acantlw-         the median line to the pectoral region. There it
cybium, and S. sinensis (Fig. 5) but is absent in       curves to the right and discharges into the right
the other 17 species of Scomberomorus.                 Cuvierian duct. Posteriorly, the postcardinal re-
   The Spanish mackerels can be divided into            ceives a pair of small veins at the level of each
three groups based on the number of folds in            vertebra. The postcardinal is composed of two
the intestine. Grammatorcynus, Acanthocybium            main branches that join anterior to the Y of the
 (Fig. 2b, c), and S. niphonius (Fig. 3k) have a        ureter. The main branch leaves the haemal arch
 straight gut not folded back on itself. Scomber-      dorsally and the small branch runs under the
omorus koreanus (Fig. 3D has four folds and five       surface of the kidney from the urogenital area.
 distinct arms. The other species all have two folds      Five species of Scomberomorus (brasiliensis,
 and three long arms (Fig. 3). Collette and Russo       concolor, maculatus, regalis , and sierra) have
 (1980) used this character to differentiate S.        unique specializations of the right and/or left
 munroi from the North Pacific S. niphonius.           fourth epibranchial arteries (Fig. 7c-g). Each of
    The spleen is large and centrally located in        these species has an artery arising from the
 ventral view in four species: guttatus, koreanus,      fourth left epibranchial artery. Other species of
 munroi, and plurilineatus. The spleen is smaller       thee genus (e.g., S. guttatus and S. tritor, Fig. 7a,
 and distinctly on the left side in ventral view in     b) lack these specializations. In S. concolor and
 seven species: brasiliensis, commerson, lineola-       S. brasiliensis this branch is small and goes into
 tus, maculatus, multiradiatus, queenslandicus,        the muscular tissue surrounding the left dorsal
 and sinensis. It is not visible in ventral view in    portion of the esophagus (Fig. 7d, D. In S. macu-
  Grammatorcynus, Acanthocybium, and seven              latus and S. sierra, this branch is large and
 species of Scomberomorus: cavalla, concolor, ni-       becomes the dorsal left gastric artery (Fig. 7c, e).
 phonius, regalis, semifasciatus, sierra, and tri-      In S. regalis this branch goes into the left lobe of
 tor.                                                   the liver (Fig. 7g, hepatic branch). Scomberomo-
                                                        rus maculatus and S. sierra have lost the connec-
 VASCULAR SYSTEM                                        tion between the dorsal left gastric artery and the
                                                        coeliaco-mesenteric artery. It is replaced by a
   The only published work on the vascular sys-         connection to the fourth left epibranchial artery.
 tem of the Spanish mackerels is on Japanese            In S. regalis , the left dorsal gastric artery seems
 species by Kishinouye (1923). No specialized sub-      to have been reduced.
 cutaneous vascular system and no cutaneous ar-            Scomberomorus brasiliensis, S. sierra, and S.
 teries or veins are present as they are in the         regalis share a specialization of the right fourth
 higher tunas, Thunnini, Auxis to Thunnus (Col-         epibranchial artery. In these species an artery
 lette 1979). Therefore, this description will be       connects the fourth right epibranchial artery
 confined to the anterior portion of the dorsal         with a branch of the coeliaco-mesenteric artery
 aorta and the postcardinal vein.                       (coeliaco-mesenteric shunt, Fig. 7e-g).
                                                                                                         553
                                                                     FISHERY BULLETIN: VOL. 82, NO.4
                                     b                      c
                                                                           Q
                 Q
             Q                                       Q
      FIGURE 3. -Viscera in ventral view of representative specimens of the 18 species of Scomberomo-
      rus. a. S. brasiliensis, Belem Fish Market, Brazil, 556 mm FL. b. S. cavallo, off Miami, Fla., 797
      mm FL. c. S. commerson, Gulf of Papua, 580 mm FL. d. S. concolor, Gulf of California, 495
      mm FL. e. S. guttatus, Gulf of Mannar, 405 mm FL. f. S. koreanus, locality unknown, 812 mm
      FL. g. S. lineolotus, Cochin, India, 786 mm FL. h. S. maculotus, St. Andrews Bay, Fla., 323
554
COLLETI'E and RUSSO; SPANISH MACKERELS
MIILIVER
• SPLEEN
o ~ STOMACH
• GAll BLADDER
o E::::J GONAD
mi SWIM BLADDER
mIn FL. i. S. multiradiatus, Gulf of Papua, 272 mIn FL. j. S. munroi, Gulf of Papua, 512 mIn
FL, USNM 219374. k. S. niphonius, Korea, 235 mIn FL. 1. S. plurilineatus, Durban, S. Africa,
490 mIn FL. m. S. queenslandicus, Exmouth Gulf, Western Australia, 466 mm FL. n. S. regalis,
Bahamas, 456 mm FL. o. S. semifasciatus, Gulf of Papua, 715 mIn FL. p. S. sierra, Baja Cali·
fornia, 516 mID FL. q. S. sinensis, China, 711 mm FL. r. S. tritor, Gulf of Guinea, 415 mIn FL.
                                                                                                  555
                                                                                    FISHERY BULLETIN: VOL. 82, NO.4
r-.c--Iateral muscle
                                                                                               peri toneum
                                         urinary bladder-H:..-
swim bladder
blood vessels
ureter - - - - \ f l .
urogenital opening
556
COLLETIE and RUSSO: SPANISH MACKERELS
                                                                                 3
                                                                                                                      2
                                                                                 4
                                                                                                                      3
                                                                                 5               -   --~   .
                                                                                                      (::1'           4
                                                                                 6               - - --
                                                                                                                      5
                                            COElIACO-
                                    5        MESENTERIC
                  a                                          b                                                 c
  FIGURE 6.-Anterior arterial system in ventral view. Numbers indicate vertebral centra, stippled areas where pharyngeal
  muscles originate. a. Scomberomorus multiradiatus, off the Fly River, Gulf of Papua, 272 mm FL. b. Acanthocybium
  solandri, Revillagigedos Is., 1,068 mm FL. c. Grammatorcynus bilineatus, Timor Sea, 453 mm FL.
                                                                                                                           557
                                                                                                FISHERY BULLETIN: VOL. 82, NO.4
epibranchials
artery
a b c d
                              coeli acO- me se n te ri c
                                sh u n t
                                                                             coeliaco-mesenteric shunt
                                left gastric artery
                  e                                            f                                                  9
FIGURE 7.-Anterior arterial system in dorsal view of seven species of Scomberomorus. a. S. guttatus, Pakistan, 545 mm FL. b. S.
tritor, Gulf of Guinea, 494 mm FL. c. S. maculatus, Chesapeake Bay, 312 mm FL. d. S. concolor, Gulf of California, 455 mm FL. e.
S. sierra, Ecuador, 512 mm FL. f. S. brasiliensis, Belem market, Brazil, 588 mm FL, USNM 217557, paratype. g. S. regalis, Bahama
Is., 490 mm FL.
olfactory rosette is located beneath the anterior                  laminae. Most species of bonitos have 21-39 la-
naris. Leaflike lamellae radiate from the central                  mellae in each nasal rosette but Gymnosarda
axis and occupy the anterior dorsal third of the                   unicolor is distinct in the group in having 48-56
olfactory cavity. Gooding (1963) studied the mor-                  (Collette and Chao 1975:532).
phology and histology of the olfactory organ of                      The number of olfactory lamellae was counted
Katsuwonus pelamis and found olfactory cells on                    on both sides in Scomberomorus and a wide
the olfactory epithelium of the lamellae. Iwai and                 range of variation was observed, 24-76 (Table 2).
Nakamura (1964a) found that the number of                          In bonitos, the number oflamellae increases from
lamellae per rosette varies among specimens of                     small specimens to adults but does not appear to
species of Thunnus but that there were differ-                     change after a certain size is reached, as Collette
ences among species in the shape of the nasal                      and Chao (1975:532) showed for Gymnosarda
558
COLLETTE and RUSSO: SPANISH MACKERELS
                                                             PHARYNGEAL MUSCLES
FIGURE B.-Kidney and postcardinal vein in ventral view
of Scomberomorus queenslandicus, Palm I., Queensland, 641      The paired pharyngeal (retractor dorsalis)
mmFL.
                                                             muscles originate on the ventral surface of one or
                                                             two vertebrae between the third and the sixth
                                                             abdominal vertebrae and insert on the upper
                                                             pharyngeal bones (Fig. 2). We did not find any
                                                             differences between species as Collette and Chao
                                                             (1975) did for the bonitos.
                                                                                                                          559
                                                                                                  FISHERY BULLETIN: VOL. 82, NO.4
~;.;.;.+-peritoneum
                                                                                     ti~f--urlnary bladder
                                                    ovary--~~
                                                                          :I"~
                                                                             ,""'oi'r.';';';'''----   i n t est i n e
                                                    anal pore
  FIGURE 9.- Urogenital system in ventral view of
  Scomberomorus (body wall and viscera removed)..
  Composite illustration.
                                                                           -=-m--urogenital papilla
                                                    geAital pore
peritoneum ureter
                '~!--_ g       0   n a   d
                                                                                         urinary              bladder
                             urinary bladder
large intestine
a nus
      FIGURE to.-Urogenital system in ventral view of Scomberomorus queenslandicus, Palm I., Queensland, 641 mm
                                FL.   a. With intestine opened. b. Urinary bladder and ureters.
560
COLLETTE and RUSSO: SPANISH MACKERELS
SPHENOTIC
INTERCALAR
EXOCCIPITAL
SUPRAOCCIPITAL
                                                     b
 FIGURE n.-Skulls in dorsal view. a. Scomberomorus commerson, Coffs Harbour, New South Wales, 1,155 mm FL.   b. Scom-
                      beromorus munroi, Cairns, Queensland, 800 mm FL, USNM 219372, paratype.
                                                                                                                   561
                                                                                           FISHERY BULLETIN: VOL. 82. NO.4
separated from each other by ridges of bone.                  nasal, and it is not interrupted above the eyes by
Thus, there are six grooves and five ridges in all.           any transverse ridge. Posteriorly, the ridge ends
The median ridge is carried forward on the fron-              at the epiotic where the medial process of the
tals to the ethmoid and is prolonged posteriorly in           posttemporal attaches.
a large supraoccipital crest. This crest extends                The external or pterotic ridge extends forward
down over the exoccipital suture more broadly                 to the midlevel of the orbit and develops anterior-
than in any other genus of the Scombridae.                    lya small auxiliary ridge that extends laterally
  The internal ridge or temporal ridge almost                 and posteriorly toward the temporal ridge.
reaches anteriorly to the posterior portion of the              The dilator groove is shorter than the other two
                                                         b
FIGURE I2.-Skulls in dorsal view.   a. Scomberomorus koreanus, Singapore, 480 nun FL.   b. Scomberomorus concolor, Gulf of
                                                 California, 495 mm FL.
562
COLLE'ITE and RUSSO: SPANISH MACKERELS
and can be detected easily in lateral view. The                   The interorbital and otic regions are not as
temporal groove is the middle one and is deeper                 broad as in the more advanced genera of the
than either of the other two. The remaining                     Sardini (Collette and Chao 1975) and Thunnini
groove, the supratemporal, is the largest of the                (Gibbs and Collette 1967). The median and tem-
three and opens posteriorly between the supra-                  poral crests are higher in Scomberomorus than in
occipital crest and the middle portion of the                   other scombrids. The bonitos, particularly Or-
epiotic.                                                        cynopsis unicolor (Collette and Chao 1975:fig. 21),
                                                            b
   FIGURE I3.-Skulls in dorsal view.    a. Acanthocybium solandri, Caribbean Sea, 1,240 mm FL.   b. Grammatorcynus
                                       bilineatus, Scott Reef, Timor Sea, 453 mm FL.
                                                                                                                     563
                                                                                           FISHERY BULLETIN: VOL. 82, NO.4
ETHMOID
INTERCALAR
       VOMER
                                                                                                FIRST VERTEBRA
PTEROSPHENOID PARASPHENOID
                                                         b
      FIGURE 14.-Skulls in lateral view. a. Scomberomorus commerson, Coffs Harbour, New South Wales, 1,155 mm FL.   b.
                     Scomberomorus munroi, Cairns, Queensland, 800 mm FL, USNM 219372, paratype.
have the next highest crests.                                  premaxilla. At its anterolateral aspect, the eth-
                                                               moid bone supports the nasals.
  ETHMOID REGION.-This region is composed                        In Scomberomorus, only the most anterior part
of the ethmoid, lateral ethmoid, and vomer. The                of the ethmoid bone is exposed in dorsal view,
nasal bone lies lateral to the ethmoid and lateral             while the rest of it is overlapped by the frontals.
ethmoid and, therefore, is included here.                      In Acanthocybium, only the lateral aspects of
                                                               the bone are overlapped by the frontals and a
  Ethmoid.-The ethmoid (dermethmoid) is a                      V-shaped dorsal median portion is exposed. The
forked median bone overlapped by the frontals                  ethmoid bone is longer in A. solandri than in
above and bounded by the vomer and lateral                     Scomberomorus.
ethmoid ventrally. The concave anterior surface
articulates with the ascending process of the                     Lateral ethmoid. -The lateral ethmoids (par-
564
COLLETIE and RUSSO: SPANISH MACKERELS
ethmoids) are massive paired bones which form                  the skull and contact the anterior edge of the
the anterior margin of the orbit and the posterior             parasphenoid. The median half of each lateral
and mesial walls of the nasal cavity. The lateral              ethmoid extends downward about three-fourths
portion of each bone extends downward from the                 as far as the lateral portion and has a large round
middle region ofthe frontals. The ventral surface              foramen for the olfactory nerve which is promi-
ofthis wall mesially bears an articulating surface             nently seen on the anterior surface. On the dorsal
for the palatine and laterally another articulat-              surface, they abut the nasals anteriorly, the fron-
ing surface for the first infraorbital (lachrymal).            tals posteriorly, and articulate with the ethmoid
The inner walls of the lateral ethmoids come                   mesially. On the anterior surface, ventral to the
closest to each other at the ventral median line of            foramen, each lateral ethmoid bears a process
                                                              b
 FIGURE 15.-Skulls in lateral view.   a. Scomberomorus koreanus, Singapore, 480 mm FL.   b. Scomberomorus concolor, Gulf of
                                                   California, 495 mm FL.
                                                                                                                       565
                                                                                             FISHERY BULLETIN: VOL. 82, NO.4
that extends anteriorly and mesially to contact                    ethmoid dorsally and lateral ethmoid dorsolater-
the dorsolateral surface of the spear-shaped pos-                  ally. The pointed posterior process is firmly anky-
terior portion of the vomer. No appreciable differ-                losed dorsally with the parasphenoid. On each
ence was noted in the lateral ethmoids of the                      side of the vomer, dorsolaterally and behind the
different species.                                                 spatulate anterior process, is a prominent articu-
                                                                   lar surface for a loose articulation with the head
  Vomer.-The vomer is the most anteroventral-                      of the maxilla. Posterior to this articular surface,
ly located bone of the cranium. The spatula-                       facing ventrolaterally, is a prominent sulcus for a
shaped anterior process bears a large oval patch                   similar movable articulation with the ventral
of fine teeth on its ventral surface. The vomerine                 branch of the anterolateral fork of the palatine.
tooth patch extends posteriorly as a narrow ridge                  The spatulate anterior process of the vomer is
in some specimens of some species, e.g., S. con-                   very long and extends beyond the anterior mar-
color (Fig. I5b). The vomer articulates with the                   gins of the nasal and ethmoid bone in Scomber-
                                                               b
      FIGURE 16.-Skulls in lateral view.     a. Acanthocybium solandri, Caribbean Sea, 1,240 mm FL.   b. Grammatorcynus
                                           bilineatus, Scott Reef, Timor Sea, 453 mm FL.
566
COLLEITE and RUSSO: SPANISH MACKERELS
omorus. No other scombrid has such a spatulate                Nasal.-The nasal bones (Fig. 20) are flat,
anterior extension of the vomer. In fact, the               roughly triangular bones with thickened lateral
vomer is either not visible in dorsal view or               edges. The mesial edges are irregular and almost
protrudes anteriorly slightly beyond the ethmoid            serrate in some species to form a firm immovable
in other scombrid genera.                                   articulation with the lateral edge of the frontals.
                                                 PTEROSPHENOID
                                                                                            PTEROTIC
                                      FRONTAL
FIRST VERTEBRA
                     PARASPHENOID
                                                     SPHENOTIC                    EXOCCIPITAL
                                                       b
 FIGURE 17.-Skulls in ventral view.a. Scomberomorus commerson, Coffs Harbour, New South Wales, 1,155 mm FL. b. Scom-
                        beromorus munroi, Cairns, Queensland, 800 mm FL, USNM 219372, paratype.
                                                                                                                 567
                                                                                               FISHERY BULLETIN: VOL. 82, NO.4
FIGURE 18. -Skulls in ventral view.   a. Scomberomorus koreanus, Singapore, 480 mm FL.   b. Scomberomorus concolor, Gulf of Cali-
                                                      fornia, 495 mID FL.
The anterior margins fit neatly beside the ante-                  cynus (2.8-3.4, Fig. 20d), S. cavalla (2.8-3.1, Fig.
rior branches of the forked ethmoid bone as can                   20a), and S. regalis (2.8-3.0). The other 14 species
be seen in the dorsal views of the skulls (Figs. 11,              of Scomberomorus are intermediate (2.0-2.9). The
12). They are nonprojecting in that their anterior                anterior end of the nasal bone is rounded and
margin is at the level of the ethmoid bone except                 heavy in Scomberomorus and Acanthocybium
in Grammatorcynus where they project well be-                     (Fig. 20a-c). The anterior end has a short, slightly
yond the anterior end of the neurocranium (Fig.                   angled arm in Grammatorcynus (Fig. 20d).
13b). Length divided by width ranges from 2.0 to
4.2 in the three genera. The widest nasal bones                     ORBITAL REGION.-The orbit is surrounded
are in S. koreanus (2.0-2.1) and S. sinensis (2.0-                by the posterior wall of the lateral ethmoid, the
2.3, Fig. 20b). The most elongate nasals are in                   ventral side of the frontal, the pterosphenoid,
Acanthocybium (3.1-4.2, Fig. 20c), Grammator-                     sphenotic, prootic, suborbital, and lachrymal
568
COILETI'E and RUSSO: SPANISH MACKEREUl
   FIGURE 19.-Skulls in ventral view.     a. Acanthocybium solandri, Caribbean Sea, 1,240 mm FL. b. Grammatorcynus
                                        bilineatus, Scott Reef, Timor Sea, 453 mm FL.
bones. The left and right orbits are partially                 the dorsal surface of the lateral ethmoid. The
separated by the basisphenoid. The sclerotic                   midlateral aspect is thickened to form the orbital
bones enclose the eyeballs.                                    roof. Posteriorly, they are bounded by the supra-
                                                               occipital and parietals. Posterolaterally, they
   Frontal. -The frontals are paired bones that                overlap the pterotics and just anterior to the
form the largest portion of the dorsal surface of              pterotics, cover the sphenotics. Ventrally, each
the neurocranium. Anteriorly they are pointed,                 frontal bears a sheet of bone, the orbital lamella,
and posteriorly they become expanded. Anterior-                which is bounded by the sphenotic posteriorly,
ly, the frontals overlap the dorsal surface of the             lateral ethmoid anteriorly, and pterosphenoid
ethmoid bone, the inner edge of the nasals, and                mesially. On the base of the orbital lamella may
                                                                                                                     569
                                                                                        FISHERY BUlLETIN: VOL. 82, NO.4
be seen a number of small foramina for the                   Scomberomorus, the left and right frontals are
branches of the supraorbital nerve trunk.. The               attached very closely to each other such that
laterosensory canals of the frontals are evident             there is no gap between them. However, in S.
on the pterotic crests as a series of pores.                 commerson and S. cavalla, there is a long narrow
   In Acanthocybium, the frontals are separated              slit between the left and right frontals, but it is
from each other by the dorsomedian pineal fenes-             not a fenestra in the true sense, as the lower parts
tra lying just in front of the supraoccipital at the         of the bones are very closely approximated. A
 level of the pterosphenoids and another anterior            third condition is found in S. sinensis. Here the
fontanel just posterior to the ethmoid bone (Fig.            anterior part ofthe median ridge is almost absent
I3a). A smaller, more oval pineal opening is                 and there is a wide gap between the left and right
present between the posterior ends of the frontals           frontals. The interorbital commissures of the lat-
 in Grammatorcynus (Fig. I3b). When viewed                   eralis system are developed a little anterior to the
through the pineal fenestra, a part of the dorsal            middle of each frontal in the form of two pores at
surface of the parasphenoid is visible through the           the margin of the median ridge which lead into
opening of the brain chamber between the ptero-              oblique tubes downwards and posteriorly. An-
sphenoids. There is a deep depression on the                 other pair of commissures of the lateralis sys-
frontals mesially, just anterior to the pineal fe-           tem is developed along the anterolateral margin
nestra. This depression becomes shallower ante-              of the frontals. These sensory canals are not
riorly, becoming confluent with the dorsal surface           developed in Acanthocybium and Grammatorcy-
of the frontals. In Scomberomorus, the frontals              nus.
join mesially along the median line on the neuro-
cranium where they form the anterior half of the               Pterosphenoid. -The pterosphenoids (alisphe-
median ridge whose posterior half is composed of             noids) form the posterodorsal region of the orbit.
the supraoccipital crest. In all but three species of        They abut the basisphenoid and prootics posteri-
a b
                      c                                                                  d
FIGURE 20.-Left nasal bones in lateral view. a. &omberomorus cavalla, Miami, 797 mm FL, 2x. b. Scomberomorus sinensis,
Tokyo, 1,850 mm FL, 1x. c. Acanthocybium solandri, Revillagigedos Is., 1,068 mm FL, 1.5x. d. Grammatorcynus bilineatus,
Queensland, 521 mm FL, 3 x .
570
COLLE'ITE and RUSSO: SPANISH MACKERELS
orly and the frontals and sphenotics laterally.         the relative degree of development of the lateral
There is a space between the left and right             ridges. Both features are best developed in S.
pterosphenoids opening into the brain chamber           commerson where the length of the anterior pro-
just anterior to the basisphenoid. In most species      cess is greater than the height of the vertical axis
of Scomberomorus, there is an anterior medially         ofthe bone.
directed lobe on each ptero!?phenoid. These lobes
meet along the median line or at least come very           Infraorbitals. - The infraorbital (suborbital)
close to each other in adults of three species:         series of Scomberomorus consists of from 9 to 13
commerson (over 1,000 mm FL), cavalla (over 550         elements which enclose the infraorbital branch of
mm FL), and lineolatus (over 750 mm FL). Small-         the lateral sensory canal system (Fig. 21a). Only
er specimens of these 3 species and all sizes of the    9 elements were observed in S. munroi, S. sierra,
other 15 species have a wide gap or fenestra            and S. sinensis, but 13 elements were observed in
between the left and right lobes. The gap is about      S. brasiliensis. The canal enters the infraorbital
equal to the width of the parasphenoid or slightly      series at what is usually considered the last
larger in three species: brasiliensis, koreanus         element (dermosphenotic) and continues around
(Fig. 12a), and concolor (Fig. 12b). The gap is         the orbit to terminate on the first infraorbital
largest in S. multiradiatus, so large that there is     (lachrymal).
virtually no medially directed lobe. This causes           The first infraorbital (lachrymal or 101) is the
the window into the brain chamber to be almost          first and largest element in the infraorbital se-
rectangular in this species.                            ries. Anteriorly, several canal tubes open on the
                                                        laminar, platelike surface of the bone. Posterior-
   Sclerotic. -The sclerotic bones consist of two       ly, the canal tube continues directly to the second
thickened semicircular segments connected by            infraorbital. The first infraorbital is an elongate
cartilage on the inner lateral surface and by           bone (length/height = 2.8-3.5) that covers part of
corneal membranes on the outside. The inner rim         the maxilla and is attached to the lateral ethmoid
of the sclerotic bones appears elliptical externally    dorsally by a mesially directed articular process.
as in the bonitos (Collette and Chao 1975) and          The anterior portion is forked with a thin ante-
Thunnus (e.g., T. atlanticus , de Sylva 1955:fig.       rior process. This process is a point of attachment
7). The sclerotic bones of Grammatorcynus are           for a ligament connected to the nasal. The projec-
relatively larger, thinner, and close to circular. In   tion is present in all species of Scomberomorus
Acanthocybium, the sclerotic bones are ellipti-         except S. lineolatus and S. tritor. The portion
cal as in Scomberomorus, but they are heavier           posterior to the articular process is elongate,
and extend further medially. The only species of        pointed, and longer than the anterior portion.
Scomberomorus that appeared to differ from the          The general shape of the first infraorbital in
other species is S. sinensis. The sclerotics are         Scomberomorus is similar to that in the bonitos
especially thick in this species and there is a          (Collette and Chao 1975:fig. 28), particularly
thick bony lump in the middle of the posterior           Cybiosarda elegans, except that the anterior pro-
surface of one of the two sclerotics. Other species     cess is smaller and more dorsally directed than in
of Scombero""orus have a thickening of the bone          Cybiosarda. Acanthocybium differs from Scom-
                                          a
in the same region but it does not form distinct         beromorus in having the posterior portion of the
protrusion as it does in S. sinensis.                    first infraorbital short and broad, shorter than
                                                         the anterior portion (Fig. 21b). Grammatorcynus
   Basisphenoid.-The basisphenoid is a small,            has a feebly forked anterior end (Fig. 21c), lack-
median, V-shaped bone that connects the para-            ing a distinct anterior process such as is present
sphenoid, prootics, and pterosphenoids. The com-         in Scomberomorus and Acanthocybium.
pressed median vertical base bears an anterior              As Devaraj (1977) noted, the dorsal margin
median process but lacks a posterior process as is       of the anterior part of the first infraorbital is
present in other scombrids such as Thunnus               straight, or nearly so, in S. cavalla and S. com-
(Gibbs and Collette 1967) and most bonitos (Col-         merson but clearly concave in the other species.
lette and Chao 1975). In most species of Scomber-        Mago Leccia (1958:pl. 4, fig. 7) indicated that S.
omorus there is at least a trace of a lateral ridge      cavalla lacked the characteristic anterior projec-
that extends laterally and posteriorly on each           tion, but we have found it to be present in our
side of the anterior process. There is great varia-      material. In other respects, there seems to be as
tion in the length of the anterior process and in        much variation between individuals of a species
                                                                                                         571
                                                                                            FISHERY BUlLETIN: VOL. 82, NO.4
dermosphenotic--~
IOl(lachrymal)
FIGURE 21.-Left infraorbital bones in lateral view. a. Scomberomorus maculatus, Cape Hatteras, N.C., 534 nun FL. b. Acantha-
          cybium solandri, Revillagigedos Is., 1,068 mm FL. c. Grammatorcynus bilineatus, Timor Sea, 453 nun FL.
as between species in the shape of the first                    reported by those authors, we have found this
infraorbital.                                                   shelf to occur in all species of Scomberomorus as
  The second infraorbital (102) sits firmly on the              well as in all other genera of scombrids. The
dorsal edge of the anterior portion of the first                shape of this shelf varies among specimens of the
infraorbital. It is a flat, somewhat compressed                 same species as well as between right and left
bone.                                                           sides of a single specimen.
  The third infraorbital (103) is an elongate,                    The fourth through the penultimate elements
tubular bone. It has no platelike extensions, but               (postorbitals) usually are simple tubelike bones
has a large mesial shelflike extension (subocular               which may have pores accommodating canal
shelf of Smith and Bailey 1962). Although not                   tubes to the skin and cheek scales. The fourth
572
COLLE'ITE and RUSSO: SPANISH MACKERELS
through about the seventh elements may be ex-           beromorus in the attitude of the attachment area
panded laterally as laminar plates which cover          and its roughness. In many species, the lateral
the anterior end of the cheek scales. There may         crest continues posteriorly almost perpendicular
be 10-16 rows of specialized cheek scales posterior     to the skull. In some species such as S. commer-
to the infraorbitals. These scales originate mesial     son (Fig. lla) and S. queenslandicus, the area of
to the infraorbital canal tubes and extend poste-       attachment is flatter. This area is flat and rough
riorly as flat, sometimes pointed, platelike ele-       in Acanthocybium (Fig. 13a) and forms a separate
ments. These platelike scales may themselves be         process in Grammatorcynus (Fig. 13b).
covered with more typical cycloid scales and
exhibit the same morphology as the corselet               Supraoccipital. -The supraoccipital forms the
scales of higher scombrids. The cheek scales of         dorsomedial portion of the posterior end of the
Scomberomorus may represent the primitive               neurocranium and bears a well-developed crest
condition of the corselet.                              which continues anteriorly on the frontals and is
                                                        pronounced posteriorly as a strong supraoccipital
  OTIC REGION.-This region encloses the otic            crest. The supraoccipital can be divided into two
chamber inside the skull, and is formed by the          parts: a thin, elongate triangular crest and a
parietal, epiotic, supraoccipital, prootic, pterotic,   roughly hexagonal base. The crest extends down
sphenotic, and intercalar (opisthotic) bones.           over the exoccipitals along the median line where
                                                        the dorsal walls of the exoccipitals suture with
   Parietals. - The parietals articulate with the       each other, but it is not interposed between the
frontals anteriorly, the supraoccipital mesially        exoccipitals. The hexagonal base is bounded an-
and the pterotics laterally, sphenotics ventrally,      teriorly by the frontals and laterally by the
and epiotics posteriorly. The inner lateral crest       parietals and epiotics. The crest extends posteri-
that originates at the middle of the frontal bones      orly over the first vertebral centrum usually to a
continues through the parietals to terminate at         level past the posterior margin of the centrum
the epiotics. This crest is typical of scombrids and    (Figs. 14-16). The height ofthe crest varies among
is particularly well developed in Scomberomorus.        species of Scomberomorus and is highest in three
These crests originate on the parietals, instead of     species, S. guttatus, S. korean us (Fig. 15a), and
the frontals, in Acanthocybium and Grammator-           S. multiradiatus. Dividing the height of the su-
cynus and are not as high as in Scomberomorus.          praoccipital crest (ventral margin ofsupraoccipital
The parietals of all the species of Scomberomorus       to edge of crest) by skull length (tip of vomer to·
are similar.                                            posteroventral margin of basioccipital) gives a
   There is a gap or fenestra on the dorsal surface     ratio of 0.46-0.57 for these three species, com-
of the skull where the parietal, epiotic, and pter-     pared with 0.34-0.45 in the other 15 species. Low
otic bones come together. It varies in shape from       ratios are found in S. cavalla and S. commerson
roughly triangular to rectangular in most spe-          (0.35-0.40) and in all six species of the regalis
cies. There is wide variation from specimen to          group (0.34-0.42).
 specimen that tends to obscure potential inter-
 specific differences. The gap is very small in some      Prootics.-In ventral view, the prootics con-
 specimens of eight species: commerson, concolor        nect with all bones on the ventral side ofthe skull
 (Fig. 12b), koreanus (Fig. 12a), maculatus, mun-       which compose the posterior part of the neuro-
roi (Fig. lIb), plurilineatus, queenslandicus, and      cranium (Figs. 17-19). Each prootic is bordered
 sierra. It is usually larger in the other species      ventrally by the parasphenoid; posteriorly by the
 and in most specimens of S. commerson (Fig.            basioccipital, exoccipital, and intercalar; lateral-
 lla).                                                  ly by the pterotic and sphenotic; and anteriorly
                                                        by the pterosphenoid and basisphenoid. The pro-
  Epiotics. -The epiotics are massive, irregular,       otic bones are irregular in shape and meet each
and bounded by the parietals anteriorly, the            other along the ventromedian line of the brain
supraoccipital mesially, the exoccipitals posteri-      case to form the anterior portion of the poste-
orly, and the pterotics laterally. The inner lateral    rior myodome. On the ventral surface, extending
crests terminate at the posterior end of the epi-       from the lateral wing of the parasphenoid to the
otics. The medial process of the posttemporal           sphenotic, the prootic forms a thick bridge which
bone attaches here on a rough process. There are        strengthens the trigemino-facialis chamber (Allis
slight differences between the species of Scom-         1903). A prootic foramen is present anterolateral-
                                                                                                        573
                                                                                FISHERY BULLETIN: VOL. 82, NO.4
ly between the tip of the parasphenoid wing and           Sphenotics. -The sphenotics form the most
the sphenotic. There is no trace of the prootic pit     posterior dorsolateral part of the roof of the orbit.
characteristic of the Thunnini and Allothunnus          They continue the outer lateral shelf from the
(Gibbs and Collette 1967; Collette and Chao 1975).      frontals and articulate with the pterosphenoid
Specimens differ in the number and arrangement          medially and the prootic and pterotic posteriorly.
of foramina leading into the brain cavity from          A segment of the articular fossa for the head of
inside the anterior opening of the trigemino-           the hyomandibula is afforded by the lateral wall
facialis chamber, but these do not seem to be           of the sphenotic on the ventral surface. The
useful interspecific differences.                       sphenotic is pierced by a foramen for the ramus
                                                        oticus nerve (Allis 1903). When viewed dorsally,
  Pterotics. -The pterotics form the lateral pos-       the sphenotics spread out on both sides more
terior corners of the neurocranium. Posteriorly,        prominently in Scomberomorus than in Acan-
each pterotic is produced into a truncate process       thocybium, as noted by Devaraj (1977). Devaraj
or pointed spine. The pterotics articulate with the     stated that the «midlateral projection" was large
epiotics and parietals medially and with the            in koreanus, guttatus, maculatus, and regalis;
exoccipitals and intercalars posteriorly. A ridge,      small in lineolatus, cavalla, and commerson; and
the pterotic ridge, originates on the dorsal sur-       absent in Acanthocybium, but we are not clear as
face of the posterior third of the frontal and          to what he was referring.
continues posteriorly, diverging to the posterior
corner of the pterotic, just anterior to the pterotic      Intercalars.-The intercalars (opisthotics) are
spine. In ventral view, the pterotics articulate        flat bones that form part ofthe posterior border of
with the sphenotics anteriorly and the prootics         the neurocranium interposed between the pter-
and intercalars medially. Two contiguous fossae,        otics and exoccipitals. The anterior portion on the
one at the posterior half of the pterotic bone and      dorsal surface is concealed by the overlapping
one at its joint with the sphenotic, seat the dor-      pterotic, thus exposing the bone on the dorsal
sal and anterior condyles of the hyomandibula.          surface less than on the ventral side. Each inter-
Three closely situated lateral sensory canal pores      calar bears a protuberance on the dorsal surface
open on each pterotic at the posteriormost region       to receive the lateral arm of the posttemporal.
of the pterotic crest. The largest pore is the most     This protuberance is followed by a posterior
posterior and opens dorsally; lateral to this is the    projection of the intercalars in some species of
next largest opening laterally on the outside of        Scomberomorus but not in Acanthocybium or
the pterotic crest; the smallest is the most ante-      Grammatorcynus.
rior ofthe three, lying along the crest and usually        Species of Scomberomorus may be roughly di-
more elongate in shape.                                 vided into three groups based on the size of
   The lengths and widths of the pterotic spines        the posterior projection from the intercalar as
vary among the species. In eight species (brasili-      Devaraj (1977) noted for Indian species. Eight
ensis, guttatus, koreanus (Fig. 18a), multiradi-        species lack any posterior projection or have only
atus, plurilineatus, regalis, semifasciatus, and        an insignificant projection: guttatus, koreanus
tritor), there is essentially no pterotic spine,        (Fig. 18a), lineolatus, multiradiatus, munroi
merely a rounded posterior area of the skull. In        (Fig. 17b), plurilineatus, semifasciatus, and si-
six species (concolor (Fig. 18b), lineolatus, macu-     nensis. In each of these species, except S. multi-
latus, munroi (Fig. 17b), niphonius, and sierra),       radiatus, the pterotic spine protrudes further
there is a blunt posteriorly projecting spine.          posteriorly than does the intercalar region. In S.
Scomberomorus sinensis is similar to this group,        multiradiatus, the posterior corners of the skull
but the posterior projection is broader and less         are rounded and there is no pterotic spine so the
like a spine. The pterotic spines are longest in        intercalars project further posteriorly. Eight spe-
three species (cavalla, commerson (Fig. 17a), and        cies have a distinct posterior projection from the
 queenslandicus), all of which also have promi-          intercalar: brasiliensis, cavalla, concolor (Fig.
nent posterior projections of the intercalars.           18b), maculatus, niphonius, regalis, sierra, and
 Grammatoreynus (Fig. 19b) is similar to the lat-        tritor. The posterior projection is smaller in some
ter group, but the spine is thinner and sharper.        specimens of S. niphonius, placing it somewhat
Acanthocybium (Fig. 19a) has a longer and thin-          between groups 1 and 2. The posterior projection
ner pterotic spine than do Grammatorcynus and            is a little longer in S. cavalla, between groups
the species of Scomberomorus.                            2 and 3. Two species, commerson (Fig. 17a)
574
COLLETTE and RUSSO: SPANISH MACKERELS
and queenslandicus, have a prominent truncate          ly, the lateral flanges fuse to form a circular
process.                                               margin in a slightly backward oblique position
                                                       and attach to the margin of the first vertebral
   BASICRANIAL REGION.-This region con-                centrum. There are a variable number of small
sists of the parasphenoid, basioccipital, and exoc-    pores in a shallow depression on the lateral
cipital bones, and forms the posteroventral base       surfaces of the basioccipital. This depression is
of the skull.                                          deepest in S. sinensis but does not approach
                                                       the basioccipital depression characteristic of the
   Parasphenoid. -The parasphenoid is a long           bonitos, Sardini (Collette and Chao 1975).
cross-shaped bone (Figs. 17-19) which articulates
with the vomer anteriorly and forms the ventral           Exoccipital.-The exoccipitals connect the
axis of the skull. The lateral wing of the para-       skull to the first vertebra dorsally. The exoccipi-
sphenoid extends dorsolaterally along the ventral      tal articulates with the epiotic and supraoccipital
ridge of the prootic bones on either side, and has a   bones anterodorsally, the intercalar laterally,
pointed end which forms part ofthe anteroventral       and with the other exoccipital posterodorsally. In
wall of the posterior myodome. Posteriorly, the        ventral view, the exoccipital articulates with the
parasphenoid bifurcates into two lateral flanges       prootic anteriorly, basioccipital medioventrally,
which attach dorsally to the corresponding pos-        and intercalar laterally. In posterior view, the
teroventral flanges of the basioccipital bone and      foramen magnum is framed by the exoccipitals.
surround the posterior opening of the posterior        Laterally, there are two foramina. The small
myodome. A ventrally projecting median keel is         anterior glossopharyngeal foramen (Allis 1903)
present in the area anterior to the origin of the      lies close to the posterior border of the prootic.
lateral flanges. In ventral view, the general          The large posterior vagal foramen lies just under
characteristic of the parasphenoid is a gradual        the overhanging shelf formed by the posterior
narrowing of the bone from anterior to posterior.      margin of the exoccipital. Dorsally, a small fora-
The broadest portion of the parasphenoid is lo-        men which opens into the brain cavity is present
cated usually at or before the tip of the V-shaped     at the medioposterior corner of the exoccipital.
joint with the vomer. Broad parasphenoids are
also present in Acanthocybium and the bonitos,         Branchiocranium
Sardini (Collette and Chao 1975). In lateral view
(Figs. 14-16), the parasphenoid forms the ventral         The branchiocranium is divided into five sec-
border to the orbits and connects with the lateral     tions: mandibular arch, palatine arch, hyoid arch,
ethmoids, basisphenoid, prootics, and basioccipi-      opercular apparatus, and branchial apparatus.
tal bones dorsally.
    The shaft of the parasphenoid is distinctly           MANDIBULAR ARCH.-The mandibular arch
wider in seven species: S. commerson (Fig. 17a),       is composed of the upper jaw (premaxilla, maxil-
 lineolatus, munroi (Fig. 17b), niphonius, queens-     la, and supramaxilla) and the lower jaw (dentary,
landicus, semifasciatus, and sinensis. Devaraj         angular, and retroarticular). Teeth are borne on
(1977) included S. caualla along with S. lineola-      the premaxilla and dentary, and the number of
tus and S. commerson as having a broad para-           teeth on these bones is a useful taxonomic char-
sphenoid, based on Mago Leccia (1958). We find S.      acter (see Dentition section).
caualla to have a broader parasphenoid than some
 members of the regalis species group but not as         Dentition.-Large, triangular, laterally com-
 broad as in the group ofseven species listed above.   pressed teeth are present in the upper and lower
                                                       jaws of Scomberomorus. Acanthocybium has sim-
   Basioccipital.-The basioccipital is the most        ilar teeth that are a little blunter and more
posteroventrally located bone of the skull. It is      tightly packed. Grammatorcynus has long thin
shaped like an inverted U with lateral flanges on      teeth that are slightly compressed laterally. Bo-
either side of the skull and forms the roof and        nitos have conical teeth that are larger than the
lateral walls of the posterior myodome. Anterior-      conical teeth of the higher tunas (Thunnini).
ly, the basioccipital is attached to the prootic       Tooth replacement in Scomberomorus caualla
bones and dorsally with the exoccipital bones. Its     was studied by Morgan and King (1983). The
lateral flanges expand ventrally to meet the flat      number of jaw teeth in Scomberomorus varies
posterior flanges of the parasphenoid. Posterior-      widely with a range of 5-39 in the upper jaw, 4-37
                                                                                                      575
                                                                                                           FISHERY BULLETIN: VOL. 82, NO.4
in the lower jaw (Tables 3, 4). Two species of                              Premaxilla. -The premaxilla (Fig. 22) is a
Scomberomorus stand out from the rest, S. multi-                         long, curved bone with a stout, arrowhead-shaped,
radiatus with the fewest teeth (5-10, x 8.0 on the                       anterior end that extends dorsally and posteri-
upper jaw; 5-11, x 7.8 on the lower jaw) and S.                          orly as an ascending process. The posterior shank
concolor with the most teeth (13-37, x 22.2 on the                       of the premaxilla is elongate and bears a row of 5-
upper jaw; 12-34, x 19.7 on the lower jaw). The 18                       39 compressed triangular teeth on its ventral
species can be ranked from lowest to highest                             margin. There are two articular facets for the
as follows (mean for upper jaw followed by mean                          overlying maxilla at the junction of the posterior
for lower jaw): 1) multiradiatus (8.0, 7.8); 2)                          margin of the ascending process with the shank.
queenslandicus (13.3, 10.6); 3) semifasciatus                            The ascending processes of both premaxillae are
(12.8, 11.2); 4) cavalla (14.0, 10.9); 5) koreanus                       closely approximated to each other mesially and
(13.7,11.2); 6) commerson (14.1,11.3); 7) sinensis                       fit into the median groove of the ethmoid bone.
(13.4,12.2); 8) brasiliensis (14.0,11.9); 9) lineo-                      The ascending process forms an angle of 32°_61°
latus (15.1, 12.9); 10) guttatus (16.9, 14.4); 11)                       with the shank, and this process is 31-48% of the
sierra (17.3, 14.1); 12) maculatus (16.8, 14.6);                         total length of the premaxilla. Devaraj (1977:22)
13) munroi (17.5, 15.0); 14) plurilineatus (17.9,                        noted that S. lineolatus had the sharpest angle
15.4); 15) tritor (18.6, 15.4); 16) regalis (19.3,                       among the Indian species that he studied (23 0
15.8); 17) niphonius (19.6, 15.9); and 18) con-                          as he measured it), and we find that it has the
color (22.2, 19.7). The species with the fewest                          sharpest angle (Fig. 22b) of any of the species
teeth, S. multiradiatus, also has the fewest gill                        in the genus, 32°-36° according to our measure-
rakers (usually 2 or 3, see Table 5), and the spe-                       ments. The species with the largest angle is S.
cies with the most teeth, S. concolor, has the most                      guttatus, 60°_61°. Devaraj included guttatus along
gill rakers (usually 23-25, see Table 5) but the                         with koreanus, regalis, and maculatus as species
correlation is not so good in the other 16 species                       with angles of 40°_43°. Our data for these other
(compare Tables 3 and 4 with Table 5).                                   three species are 40°_54°. Scomberomorus com-
TABLE 3.-Number of teeth in upper jaw in species of                      TABLE 4.-Number of teeth in lower jaw in species of
                            Scomberomorus.                                                          Scomberomorus.
                                                        Overall                                                                  Overall
     Species      Side Min. Max.    i      SD     N       x       Rank        Species     Side Min. Max.     x      SD     N       x       Rank
brasiliensis       L    6     25   14.07   3.62    68                    brasiliensis      L    7     19    11.96   2.85    70
                                                        14.00       6                                                            11.88       7
                   R    8     27   13.93   3.53    69                                      R    7     20    11.79   3.04    67
cavaJla            L    8     29   14.24   5.82    50                    cavalla           L    6     24    10.94   3.64    50
                                                         14.00      7                                                            10.92       3
                   R    6     28   13.74   5.23    46                                     R     7     22    10.90   3.78    48
commerson          L    5     35   14.15   5.68   110                    commerson        L     5     29    11.37   4.40   108
                                                                                                                                 11.27
                                                        14.06       8                                                                        6
                   R    7     38   13.96   5.28   109                                     R     4     27    11.17   3.84   106
conc%r             L   15     35   22.15   4.94    26                    conco/or         L    13     30    19.46   3.96    26
                                                        22.20      18                                                            19.71      18
                   R   13     37   22.26   5.77    23                                     R    12     34    19.96   4.96    25
guttatus           L   12     36   16.78   4.13    89                    guttatus         L    10     25    14.49   3.06    98
                                                        16.68      11                                                            14.42      11
                   R   11     35   16.97   4.25    93                                     R     9     23    14.34   2.70    97
koreanus           L    9     19   14.17   2.76    24                    koreanus         L     8     17    11.25   2.19    24
                                                         13.71      5                                                            11.21       4
                   R   10     16   13.25   2.11    24                                     R     9     15    11.17   1.31    24
lineo/atus         L   10     27   15.28   3.94    29                    linealatus       L     7     28    12.72   3.69    29
                                                        15.07       9                                                            12.93       9
                   R    9     28   14.86   4.19    29                                     R     9     26    13.14   3.20    29
maculatus          L   10     32   17.04   4.06    55                    maculatus        L    10     30    14.89   3.70    55
                                                        16.82      10                                                            14.64      12
                   R    7     30   16.57   3.80    49                                     R     8     26    14.37   3.02    52
multiradiatus      L    5     10    7.88   1.24    26                    multiradiatus     L    6     11     8.00   1.20    26
                                                          8.04                                                                     7.75
                   R    6     10    8.19   1.20    26                                      R    5      9     7.50   0.95    26
munroi             L   12     20   16.57   2.64     7                    munroi            L   11     29    15.88   5.62     8
                                                         17.50     13                                                            15.01      13
                   R   12     23   18.22   3.90     9                                      R   11     19    14.13   2.75     8
niphonius          L   12     26   19.53   2.71    32                    niphonius        L    12     20    15.55   2.05    33
                                                         19.56     17                                                            15.93      17
                   R   14     26   19.58   2.75    33                                      R   12     20    16.30   2.05    33
plurilineatus      L   16     22   18.25   1.70    24                    piurilineatus     L   12     22    15.83   2.08    23
                                                         17.92     14                                                            15.37      14
                   R   12     23   17.58   2.52    24                                      R   12     20    14.92   1.89    24
queensla.ndicus    L    8     17   13.33   2.43    30                    queenslandicus    L    6     14    10.59   1.79    32
                                                         13.29      3                                                            10.61       2
                   R   10     18   13.24   2.31    29                                     R     7     14    10.64   1.99    28
regalis            L    9     31   19.34   5.10    47                    regalis          L    10     24    15.72   4.17    46
                                                         19.29     16                                                            15.80      16
                   R   10     30   19.25   4.74    48                                      R    8     23    15.87   4.10    47
semifasciatus      L   10     23   13.03   3.07    33                    semifasciatus     L    7     18    11.24   2.98    33
                                                         12.76      2                                                            11.23       5
                   R    8     21   12.48   2.92    33                                      R    7     18    11.21   2.93    33
sierra             L   10     37   17.15   5.79    60                    sierra            L    7     37    13.90   5.29    61
                                                         17.32     12                                                            14.05      10
                   R    7     39   17.48   7.34    62                                      R    7     32    14.19   5.30    62
sinensis           L   10     16   13.64   1.69    14                    sinensis          L   10     15    12.43   1.87    14
                                                         13.43      4                                                             12.22      8
                   R   10     17   13.21   1.67    14                                      R   10     15    12.00   1.41    14
tritor             L   11     30   18.56   3.98    32                    tritor            L   10     21    15.24   2.95    33
                                                         18.58     15                                                             15.40     15
                   R   11     28   18.59   4.38    32                                      R   10     23    15.56   3.19    33
576
COLLE'ITE and RUSSO: SPANISH MACKERELS
                                       a
                                                                                                                b
                                                                                                                   d
                                                            c
   FIGURE 22.-Left premaxillae in lateral view. a. Scomberomorus semifasciatus, Port Moresby, New Guinea, 510 mm FL,
   2 x. b. Scomberomorus lineolatus, Cochin, India, 786 mm FL, 2 x. c. Acanthocybium solandri, Miami, Fla., 1,403 mm FL,
   1 x. d. Grammatorcynus bilineatus, Marshall Is., 424 mm FL, 2 x .
merson and S. cavalla also fall into this inter-                 S. cavalla, 31-32%. Acanthocybium has a longer
mediate group with angles of 41°_54°. Acantho-                   process than any of the species of Scomberomo-
cybium (Fig. 22c) has a sharp angle (34°-37°), like              rus, 50% (according to our data and Devaraj 1977).
S. lineolatus. Grammatorcynus (Fig. 22d) has a
very large angle, 64°-67°, even greater than S.                    Maxilla.-The maxilla (Fig. 23) is a long,
guttatus. The ascending process is longest in S.                 curved bone surmounting the premaxilla dorso-
lineolatus, 46-48% ofthe length ofthepremaxilla                  laterally by means of an anterior head and ven-
(41-45% according to Devaraj) and S. sinensis,                   tral sulcus. The head consists of a thick massive
43-46%. The process is shortest in S. guttatus and               inner condyle and a small lateral process (see S.
a b
       c                                                                 d
FIGURE 23. - Left maxillae in lateral view. a. Scomberomorus semifasciatus, Port Moresby, New Guinea, 510 mm FL, 2 x. b. Scom-
beromorus munroi, New Guinea, 512 mm FL, 2 x. c. Acanthocybium solandri, Miami, Fla., 1,403 mm FL, 1 x. d. Grammatorcynus
bilineatus, Timor Sea, 453 mm FL, 2 x .
                                                                                                                           577
                                                                                   FISHERY BULLETIN: VOL. 82, NO.4
semifasciatus, Fig. 23a). The former possesses a         Dentary.-The dentary (Fig. 24) is a large
prominent knob at its dorsolateral aspect that fits    forked bone which forms the major part of the
into the articular surface of the vomer and an         lower jaw. It is laterally flattened and bears a
anterior, deep concavity facing the inner wall of      single row of 4-37 compressed triangular teeth on
the premaxilla. The head is 18-25% of the total        the dorsal margin. Posteriorly, the dentary forms
length of the maxilla. Immediately posterior to        two arms. The ventral arm is relatively narrow
the head is a shallow depression which receives        and shorter than the dorsal arm, and its inferior
the anterior articulating process of the palatine.     margin has a groove which accepts the angular
The shank of the maxilla is narrow and some-           and the anterior end of Meckel's cartilage. The
what flattened. The posterior end expands into a       base of the ventral arm has an external series of
thin, flat plate which is partially covered dorsally   pores, which seem to be the preoperculomandibu-
by the supramaxilla. The height of the plate is 8-     lar pores (Allis 1903; Mago Leccia 1958) of the
15% of the total length of the maxilla. Acantho-       lateral line system. The length of the dentary
cybium (Fig. 23c) and Grammatorcynus (Fig.             from its anterior margin to the tip of the lower
23d) lack any posterior expansion of the maxilla.      arm is 86-97% of the length to the tip ofthe upper
In fact, in Acanthocybium there is a notch in the      arm. The figures are similar for Acanthocybium
dorsal margin of the maxilla, and the posterior        (91-96%). However, the lower margin is longer in
end is distinctly lower than the middle of the         Grammatorcynus, 105-109% of the length of the
shaft of the bone.                                     upper margin (Fig. 24c). The proportions are
   Scomberomorus munroi is the only species in         similar in all 18 species of Scomberomorus, with
the genus that is distinguishable from the others      S. maculatus having the shortest lower margin
in characters of the maxilla; it totally lacks the     (87-89%) and S. concolor the longest (92-97%).
anterior process on the outer surface of the head
of the maxilla (Fig. 23b). Devaraj (1977:23) stated
that the outer process was "flimsier" in S. com-
merson, but we find that the process varies from
small to moderate in our material of the species
and that S. commerson is not distinct in this
aspect.
   The head ofthe maxilla is shorter than in most                      a
other species, relative to total length of the max-
illa, in the six species of the S. regalis group.
Starting with the shortest maxilla head length
(lowest mean percent), these six species (plus
 koreanus and multiradiatus) rank as follows: 1)
 concolor, 18.8; 2) brasiliensis, 19.0; 3) sierra,
19.8; 4) tritor, 19.9; 5) koreanus, 20.2; 6) macu-
latus,20.6; 7) multiradiatus, 21.0; and 8) tritor,
21.1. The longest heads are found in niphonius
(24.7), semifasciatus (24.1), and lineolatus (24.0).
The head of the maxilla is a little longer, relative
to total maxilla length, in Grammatorcynus
(26%) and much longer (33%) in Acanthocybium.
   The posterior expansion of the maxilla is least
well-developed (lowest) relative to maxilla length
in S. multiradiatus (8-9%) and S. sinensis (9-
11%). The best-developed posterior expansion is in
 S. plurilineatus (15%). The other 15 species range
from 11 to 14%. This range of variation is shown
in S. munroi but the specimen illustrated (Fig.                         c
23b) shows a relatively well-developed posterior
                                                       FIGURE 24. - Left dentaries in lateral view. a. Scomberomorus
expansion. The shape of the posterior expansion        semifasciatus, Port Moresby, New Guinea, 510 mm FL, 2 x. b.
varies within and between species, but most of         Acanthocybium solandri, Miami, Fla., 1,403 mm FL, 1 x. c.
the expansion is usually ventral.                      Grammatorcynus bilineatus, Marshall Is., 424 mm FL, 2 x .
578
COLLETTE and RUSSO: SPANISH MACKERELS
All the species of Scomberomorus and Gramma-                   Devaraj (1977) stated that the anterior notch was
torcynus have a notch on the anteroventral mar-                distinct in S. cavalla and S. commerson. The
gin of the dentary. This notch is absent in Acan-              notch may be a little more prominent in S.
thocybium. The notch seems to vary as much                     commerson than in the other species, but we
between specimens of a species of Scomberomo-                  cannot confirm this for S. cavalla.
rus as between species of the genus. Acanthocyb-
ium has a prominent notch on the anterior mar-                   Angular. -The triangular anterior end of the
gin of the dentary (Fig. 24b) which is indistinct or           angular (frequently called articular) fits into the
absent in Scomberomorus and Grammatorcynus.                    dentary anteriorly (Fig. 25). The posterior end of
RETROARTICULAR
            FIGURE 25.-Left angulars and retroarticulars in lateral view. a. Scomberomorus semifasciatus, Port
            Moresby, New Guinea, 510 mm FL, 3.5x. b.Acanthocybium solandri, Miami, Fla., 1,403 mm FL, IX.
            c. Grammatorcynus bilineatus, New Guinea, 382 mm FL, 4.5x.
                                                                                                                 579
                                                                                                  FISHERY BULLETIN: VOL. 82, NO.4
the angular bears three large processes; the dor-                         Retroarticular.-The retroarticular bone (fre-
sal process directed forward and upward, the ven-                      quently called angular) is rhomboid and attached
tral process directed forward, and the posterior                       firmly, but not fused to the posteroventral mar-
process directed backward and upward. This pro-                        gin of the angular (Fig. 25). No differences were
cess is hooked and carries a transverse articular                      found among the retroarticulars of the species of
facet for the quadrate. Between the dorsal and                         Scomberomorus.
ventral processes is Meckel's cartilage which ex-
tends directly anterior into the space between the                       PALATINE ARCH. - The palatine arch con-
two arms of the dentary. The length of the angu-                       sists of four pairs of bones in the roof of the
lar to the tip of the dorsal process is 31-42% of the                  mouth: palatine, ectopterygoid, entopterygoid,
total length of the bone; the length to tip of the                     and metapterygoid.
ventral process is 42-53% of the total length. The
maximum width of the angular, measured from                                  "
                                                                          Palatine.-The    palatine (Fig. 26) is forked
the tip of the dorsal process to the tip of the                        both posteriorly and anterolaterally. The dorsal
ventral process is 34-43% of the total length.                         branch of the anterolateral fork is hooked, and
Devaraj (1977) stated that the ventral process                         its anterior end articulates with a facet on the
was longer and narrower in S. commerson and                            maxilla, immediately ventral to the nasal. The
Acanthocybium than in other Indian species                             ventral branch is cone-shaped or pointed. The
and we confirm this. The ventral process is as                         exterior branch ofthe posterior fork carries on its
long or longer than the dorsal process in S.                           dorsal surface the shank ofthe ectopterygoid, and
commerson (ventral process 99-162% of the dorsal                       the inner, flat, thin branch is attached to the
process), Acanthocybium (99-148%), and also in                         anterior end of the entopterygoid. The lateral
S. queenslandicus (115-136%). The next longest                         aspect of the palatine is roughly triangular and
ventral processes are in S. caualla (80-104%) and                      concave', and closely attached to the mesial wall
S. sinensis (82-97%). The other 14 species of                          ofthe maxilla. Grammatorcynus (Fig. 26d) differs
Scomberomorus (and Grammatorcynus) have                                from Scomberomorus (Fig. 26a, b) and Acantho-
shorter ventral processes, 40-85% of the length of                     cybium (Fig. 26c) in almost lacking the anteriorly
the dorsal process. The shortest ventral process is                    directed ventral branch. Acanthocybium has a
in S. regalis, 40-44%.                                                 distinct ventral branch but it is shorter than the
a b
                c                                                                        d
      FIGURE 26. - Left palatines in lateral view, slightly rotated to better show tooth patch.
                                                                                          a. Scomberomorus semifasciatus,
      New Guinea, 740 mm FL, 2x. b. Scomberomorus commerson, New South Wales, 1,155 mm FL, IX. c. Acanthocybium
      solandri, Miami, Fla., 1,403 mm FL, 1 x. d. Grammatorcynus bilineatus, Timor Sea, 453 mm FL, 2 x .
580
COLLE'ITE and RUSSO: SPANISH MACKERELS
dorsal branch, as pointed out by Devaraj (1977),       widest tooth patch is in S. semifasciatus (Fig.
whereas the ventral branch is longer than the          26a), almost as wide as in Grammatorcynus but
dorsal branch in all species of Scomberomorus.         with much finer teeth.
The distance from the anterior end of the ventral
branch to the end of the external branch divided          Ectopterygoid. -The ectopterygoid (Fig. 27) is
by the distance from the tip of the dorsal hook to     a T-shaped bone, the top of the T forming its
the end of the external branch is 120-123% in          posterior end. It is joined with the entopterygoid
Grammatorcynus, 112-121% in Acanthocybium,             dorsolaterally, the palatine laterally and anteri-
and only 87-107% in the species of Scomberomo-         orly, and the quadrate and metapterygoid poste-
rus. Acanthocybium differs from both Scomber-          riorly. The dorsal arm of the ectopterygoid is
omorus and Grammatorcynus in having the pos-           shorter than the ventral arm in Scomberomorus
teriorly directed inner branch almost as long as       and vice versa in Acanthocybium and Gramma-
the outer branch. The distance from the tip of the     torcynus. This relationship can be expressed by
dorsal hook to the tip of the inner branch divided     dividing the dorsal distance (from the anterior
by the distance to the tip of the outer branch is      end ofthe bone to the tip of the dorsal arm) by the
97-99% in Acanthocybium and 54-84% in the              ventral distance (from the anterior end to the tip
species of Scomberomorus and Grammatorcynus.           of the ventral process). The range is 85-100% in
The tooth patch is long and narrow in Acantho-         the species of Scomberomorus compared with
cybium (Fig. 26c), short and wide in Grammator-        greater than 100% in Acanthocybium (103-109%)
cynus (Fig. 26d), and with the species of Scom-        and Grammatorcynus (110-116%). The shank is
beromorus in between these extremes. The teeth         longer in Acanthocybium than in the other two
are fine in all three genera, but a little larger in   genera. The posterior edge of the ectopterygoid
Acanthocybium and Grammatorcynus than in               (from the tip ofthe dorsal process to the tip of the
most species of Scomberomorus.                         ventral process) is shorter relative to the ventral
   The species of Scomberomorus show some dif-         distance in Acanthocybium (41-47%) than in the
ferences in the length of the ventral branch           species of Scomberomorus (43-63%) and Gram-
relative to that of the length of the external         matorcynus (64-68%).
branch, the relative length of the outer to the           The ectopterygoids of the species of Scomber-
inner branch, the relative width of the tooth          omorus are very similar. The shortest ventral
patch, and the size of the teeth in the tooth patch.   distance is in S. sinensis, 85-88% of the dorsal
 Dividing the length of the ventral margin, from       distance, the longest in S. regalis, 99-100%. The
the anterior end of the ventral branch to the end      shortest posterior edges are in S. niphonius and
 of the external branch, by the length ofthe dorsal    S. tritor (50-51% of the dorsal distance), the
 margin, from the tip ofthe dorsal hook to the end     longest posterior edges are in S. korean us (61-
 of the ventral branch, shows three species of         63%), S. plurilineatus (60-63%), and S. semi-
 Scomberomorus-sinensis (98-107%), tritor (100-        fasciatus (59-62%);
 102%), and commerson (94-102%)-to be most
 similar to Acanthocybium (112-121%). The lowest         Entopterygoid. - The entopterygoid is elongate
 figures are for S. niphonius (87-88%). Dividing       and o~al in shape (width 23-46% oflength) (Fig.
 the length of the dorsal margin by the distance       28). The outer margin of the entopterygoid is the
 from the tip of the dorsal hook to the end of the     thickest part of the bone and is attached to the
 inner branch shows four species of Scomberomo-        inner margin ofthe ectopterygoid. The entoptery-
 rus-plurilineatus (75-84%), munroi (77-79%),          goid also connects with the palatine anteriorly
 lineolatus (72-74%), and semifasciatus (70-73%)       and the metapterygoid posterolaterally. The me-
-to resemble Grammatorcynus (71-75%). The              sial and posterior borders are free from contacts
lowest figures are for S. multiradiatus (54-56%).      with other bony elements. The dorsal surface is
 The tooth patch is very narrow in S. commerson        concave and the smooth convex ventral surface
 (Fig. 26b), similar to the patch shape in Acantho-    forms the major part of the buccal roof. The
cybium but with finer teeth. The tooth patch is        anterior end is narrower than the posterior end in
 also narrow in a 677 mm FL specimen of S.             most species but a little wider in S. guttatus and
 sinensis and reduced to only a single row of teeth    S. koreanus. The entopterygoid is narrowest in S.
 in a 1,082 mm specimen. The teeth in S. sinensis      commerson (width 23-28% of length, Fig. 28a)
 are larger than in other species of the genus, at     and S. multiradiatus (29%). The shortest and
 least the same size as in Acanthocybium. The          widest entopterygoids are in sinensis (39-46%,
                                                                                                       581
                                                                           FISHERY BULLETIN: VOL. 82, NO.4
HYOMANDIBULA
QUADRATE
SYMPLECTIC
ECTOPTERYGOID
582
COLLE'ITE and RUSSO: SPANISH MACKERELS
a b
                              c                                                             d
FIGURE 28.-Left entopterygoids in dorsal view. a. Scomberomorus commerson, New South Wales, 1,155 mm FL, Ix. b. Scomber-
omorus sinensis, Hong Kong, 677 mm FL, 2 x. c. Acanthocybium solan.dri, Indian Ocean, 943 mm FL, 2x. d. Grammatorcynus
bilineatus, Marshall Is., 424 mm FL, 2.5 x .
Fig. 28b), maculatus (41-42%), and concolor                   with the dorsal end of the symplectic in Acantho-
(40-42%). Acanthocybium (Fig. 28c), Grammator-                cybium and Grammatorcynus (Fig. 27b, c), but
cynus (Fig. 28d), and the other 13 species of Scom-           not in most species of Scomberomorus (Fig. 27a).
beromorus are intermediate in width (30-40%).                 The posterior horizontal part of the ventral bor-
                                                              der is longer than the anterior oblique part in
   Metapterygoid. - The metapterygoid (Fig. 27)               Scomberomorus (anterior part 39-86% of poste-
is a flat, quadrangular or somewhat triangular                rior part), but vice versa in Acanthocybium and
bone. The posterodorsal margin of this bone is                Grammatorcynus (anterior part 132-218% of pos-
deeply grooved to receive the hyomandibula. The               terior part).
dorsal portion is strongly ankylosed to the lamel-               The anterior part of the ventral margin is
lar region of the hyomandibula. The ventroposte-              relatively longer in S. multiradiatus (77-78% of
rior margin abuts the lowermost portion of the                posterior part) and S. maculatus (65-86%), and
symplectic process of the hyomandibula, but does              relatively shorter in S. plurilineatus (41-45%)
not touch the hyomandibula. There is a relatively             and S. regalis (39-50%). Devaraj (1977) reported
long slit between the two bones, through which                differences in the shape ofthe anterior free border
the hyoidean artery passes (Allis 1903). The ven-             of the metapterygoid, as convex, nearly straight,
tral border is divided into two portions, the hori-           or concave. We have found similar tendencies but
 zontal portion in contact with the quadrate and               it is difficult to place the species of Scomberomo-
the anterior oblique portion ankylosed to the                 rus in specific categories.
 ectopterygoid. On the mesial surface, the meta-
 pterygoid possesses a triangular-shaped area                    HYOID ARCH. - The hyoid arch is the chain of
which forms an interdigitating articulation with               bones that connect the lower jaw and the opercu-
 the upper arm of the ectopterygoid. The postero-              lar apparatus with the skull. The arch is com-
 ventral margin of the metapterygoid articulates               posed of the hyomandibula, symplectic, quadrate,
                                                                                                                     583
                                                                              FISHERY BULLETIN: VOL. 82, NO.4
hyoid complex (hypohyal, ceratohyal, epihyal,         that fits into a groove on the inner surface of the
interhyal, and the seven branchiostegal rays),        quadrate (Fig. 27). The symplectic is very narrow
and two median unpaired bones, the glossohyal         in Scomberomorus, not filling the groove in the
and urohyal.                                          quadrate (Fig. 27a). It is slightly wider in Gram-
                                                      matorcynus but the groove is narrower, the sym-
   Hyomandibula. -The hyomandibula (Fig. 27)          plectic more nearly filling the groove (Fig. 27c).
is an inverted L-shaped bone that connects the        The symplectic is greatly expanded at its dorsal
mandibular suspensorium and opercular bones to        end in Acanthocybium (Fig. 27b). In most species
the neurocranium. There are three prominent           of Scomberomorus, the symplectic, like the poste-
condyles on the dorsal end of the hyomandibula.       rior process ofthe quadrate, extends only a slight
The long dorsal condyle forms the base of the L       distance beyond the dorsal margin of the quad-
and fits into the fossa at the junction of the        rate. The symplectic is slightly longer than the
pterotic and sphenotic bones. The anterior con-       posterior process in a species with a short process
dyle articulates with the ventral fossa of the        (e.g., S. multiradiatus) and in one with a rela-
pterotic and the lateral process is attached to the   tively long process (e.g., S. sinensis). No bony
inside of the opercle. Anterolaterally, the hyo-      contact is present between the dorsal end of the
mandibula is drawn out into a lamellar region         symplectic and either the metapterygoid or the
that joins the metapterygoid; posterolaterally, it    hyomandibula in most species of Scomberomo-
has a long articulation with the preopercle. Ven-     rus. The metapterygoid is in slight contact with
trally, the hyomandibula has a long symplectic        the symplectic in S. sinensis and S. koreanus.
process; at the posterodorsal corner there is a       Both Grammatorcynus and Acanthocybium have
small spine. A strong vertical ridge extends from     much longer symplectics, extending well beyond
the ventral margin to a little below the dorsal       the dorsal margin of the quadrate and even
border, thence it curves anteriorly to confluence     beyond the dorsal end of the posterior process
with the anterior condyle. The portions lying         to make firm contact with the metapterygoids.
anterior and posterior to this ridge are grooved      Devaraj (1977:fig. 11) illustrated the symplectics
for articulation with the metapterygoid and pre-      by themselves for the four Indian species (korea-
opercle respectively; in situ only the ridge and a    nus, guttatus, lineolatus, and commerson) and
portion of the upper broader surface are visible      Acanthocybium.
exteriorly. The upper surface of the symplectic is
connected to the ventral border of the hyoman-           Quadrate.-The lower jaw is suspended from
dibula by way of a cartilage which is especially      the cranium by means of the articulating facet of
well developed in Acanthocybium. There are two        the ventral surface of the triangular quadrate.
deep fossae on the inner surface of the hyoman-       The broad dorsal margin of the quadrate abuts
dibula of Acanthocybium but only one in Scom-         the ventral border ofthe metapterygoid (Fig. 27).
beromorus and Grammatorcynus.                         The mesial surface of the quadrate bears a deep
   The posterodorsal spine is best developed in       groove which accepts the symplectic. There is a
Acanthocybium (Fig. 27b) and S. commerson, as         strong process on the posterior margin of the
pointed out by Devaraj (1977). This spine is also     quadrate that is attached along the lower ante-
well developed in S. queenslandicus and is pres-      rior arm ofthe preopercle. The process is relative-
ent but small in the other 16 species of Scom-        ly short in Scomberomorus, extending only a
beromorus (e.g., S. semifasciatus, Fig. 27a). No      short distance beyond the dorsal margin of the
spine is present in Grammatorcynus (Fig. 27c).        quadrate in most species (e.g., S. semifasciatus,
The total length of the hyomandibula (ventral tip     Fig. 27a). The process is shortest in S. multiradia-
to dorsal margin of dorsal condyle) is greater        tus, not reaching the dorsal margin. The process
relative to maximum width (tip of anterior con-       is longest in S. commerson, S. lineolatus, and S.
dyle to outer margin of posterior condyle) in         sinensis, but it is still shorter in these three
Grammatorcynus (width 35-36% of length) and           species than in Acanthocybium (Fig. 27b) and
S. multiradiatus (36-39%). The hyomandibula is        Grammatorcynus (Fig. 27c). An attempt was
shortest relative to width in S. sinensis (45-52%).   made to quantify this by measuring from the
Acanthocybium (41-44%) is similar to the major-       inside ofthe articular facet to the tip ofthe dorsal
ity of species of Scomberomorus (39-47%).             process and to the tip of the anterior margin of
                                                      the quadrate. The short process in S. multiradia-
  Symplectic.-The symplectic is a small bone          tus is shown by the distance to the anterior
584
COLLETTE and RUSSO: SPANISH MACKERELS
margin being about equal (95-103%) to the dis-          further posterior due to also having an anterior
tance to the tip of the process. In the other species   pointed end to the hypohyals at the junction of
of Scomberomorus, the distance to the anterior          the dorsal and ventral hypohyals. In addition,
margin is less than (76-96%) the distance to the        Acanthocybium has a prominent anterolateral
tip of the process. This percent is low in S.           process on the ventral hypohyal. The groove for
lineolatus (76%), indicative of a long process, but     the hyoidean artery runs along the outer surface
the figures for S. commerson (80-83%) and S.            of the epihyal, ceratohyal, and ventral portion of
sinensis (83-85%) are not much lower than those         the dorsal hypohyal. The groove extends anteri-
for many other species with shorter processes.          orly 29-54% of the length of the dorsal hypo-
The lowest figures are for Acanthocybium (72-           hyal before becoming a covered tunnel in Scom-
80%) and Grammatorcynus (65-71%), indicative            beromorus and Grammatorcynus or a foramen in
of the long process in these two genera.                Acanthocybium leading to the inner side of the
                                                        dorsal hypohyal. The opening on the inner side
  Hyoid complex.-This complex includes the              appears as a small to moderate pit usually lo-
two hypohyals (= basihyal of Mago Leccia 1958),         cated in the ventral portion of the dorsal hypo-
ceratohyal, epihyal, and interhyal bones, and the       hyal in Scomberomorus and Grammatorcynus.
seven branchiostegal rays (Fig. 29). The hypo-          The pit lies astride the junction of the dorsal and
hyals, ceratohyal, and epihyal are closely asso-        ventral hypohyals in S. brasiliensis and extends
ciated and form a functional unit.                      slightly into the ventral hypohyal in S. macula-
                                                        tus and S. sierra. The pit also is larger in these
   Hypohyals. -The hypohyals are composed of            species.
separate dorsal and ventral elements joined lon-
gitudinally. In lateral view, the ventral hypohyal         Ceratohyal. -The ceratohyal is a long flat
is clearly larger than the dorsal hypohyal in all        bone, broadest at the posterior end and with an
species of Scomberomorus and in Grammator-              anteroventral projection that articulates with the
cynus (Fig. 29a, c). The ventral hypohyal is about      posteroventral notch of the ventral hypohyal. It is
three times larger than the dorsal in Acanthocyb-       the largest bone of the hyoid complex. Posterior-
ium (Fig. 29b). Devaraj (1977:29) stated that the       ly, the middle part of the ceratohyal interlocks
dorsal and ventral hypohyals were of equal size         with the epihyal by means of odontoid processes
in S. commerson, but we find the ventral larger         issuing from both elements (ceratohyal-epihyal
in lateral view, as in the other species of the         suture of McAllister 1968), while the upper and
genus. In mesial view, the dorsal and ventral           lower portions are joined by cartilage. Four acin-
hypohyals in S. commerson and the other 17              aciform branchiostegal rays are attached to the
species are about equal in size. The ventral hypo-      respective articular surfaces along the concave
hyal is perhaps a little larger than the dorsal in      middle portion of the ventral margin. In Scom-
mesial view in S. multiradiatus and S. queens-          beromorus (Fig. 29a) the fifth branchiostegal ray
landicus. Laterally, the suture between the dor-        usually is attached to the most posterior part of
sal and ventral hypohals runs almost horizontal-        the ceratohyal or on the space between the cera-
ly in Acanthocybium but curves ventrally at             tohyal and epihyal, not on the anterior part of the
various angles in Scomberomorus and Gramma-             epihyal as stated by Devaraj (1977) and Mago
torcynus. Devaraj (1977) stated that it formed "an      Leccia (l958:pl. 4). In Acanthocybium and Gram-
upward curve anteriorly in S. koreanus, S. lineo-       matorcynus, the fifth ray is on the anterior part of
latus, S. regalis , and S. niphonius and runs           the epihyal (Fig. 29b, c). The hyoidean groove
nearly straight in the other species including A.       runs the length of the ceratohyal on its lateral
solandri." The specimen of S. commerson that he         surface. The groove is so deep in some specimens
illustrated (figure 12D) does show a straight           of some species that it forms a thin slit through
suture, but in our material a downward curve            the bone, the ceratohyal window or beryciform
usually is present. Mesially, a pointed lateral         foramen. Slits are common in 10 species of Scom-
process at the anterodorsal end of the dorsal           beromorus: brasiliensis, commerson, concolor,
hypohyal forms a symphysis with the glossohyal,         multiradiatus, munroi, niphonius, queensland-
urohyal, basibranchial, and the process of the          icus, semifasciatus, sierra, and tritor; rare in
hypohyal from the opposite side in Scomberomo-          four, cavalla, plurilineatus, maculatus, and si-
rus and Grammatorcynus. Acanthocybium also              nensis plus Acanthocybium and Grammator-
has a pointed lateral process but it appears to be      cynus; and occasional in the other four species:
                                                                                                        585
                                                                                            FISHERY BULLETIN: VOL. 82, NO.4
                                 CERATOHYAL                     EPIHYAL
                                                                                      INTERHYAL
HYPOHYALS
                                                                        BRANCHIOSTEGAL RAYS
                                                         a
                               HYOIDEAN GROOVE
       FIGURE 29.-Left hyoid complexes in lateral view. a. Scomberomorus commerson, New South Wales, 1,155 mm
       FL, 1 x. b. Acanthocybium solandri, Miami, Fla., 1,403 mm FL, 1 x. c. Grammatorcynus bilineatus, Timor Sea,
       453 mm FL, 2x.
guttatus, koreanus, lineolatus, and regalis. Both              deeply concave and very much constricted in
large (S. commerson) and small (S. multiradia-                 Acanthocybium such that the dorsal margin of
tus) species have slits. Smaller specimens of a                the bone comes closer to the groove for the hy-
species sometimes have slits (guttatus, pluriline-             oidean artery. The margin is straight in Gramma-
atus, queenslandicus, regalis, and semifasciatus),             torcynus and varies in Scomberomorus. Devaraj
while larger specimens lack them; sometimes the                (1977:30-31) stated that the dorsal margin of the
situation is reversed (koreanus, lineolatus, and               ceratohyal is convex in some species (koreanus
tritor). The dorsal margin of the ceratohyal is                and lineolatus), almost straight in others (gut-
586
COLLE'ITE and RUSSO: SPANISH MACKERELS
  Interhyal. -The interhyal is a small flattened     cynus differs in having a quadrangular to oval
bone that is attached to the epihyal dorsal to       tooth plate fused to and covering the dorsal
the posterior process. The interhyal is directed     surface of the bone (Fig. 30d). Two bonitos, Cyb-
obliquely upward and links the hyoid complex to      iosarda and Orcynopsis, have a similar condition
the hyomandibula and symplectic. No differences      but there are two separate oval tooth patches in
were noted among interhyals.                         these genera (Collette and Chao 1975:fig. 43a, b).
                                                     Another bonito, Gymnosarda, has what appears
  Glossohyal. -The glossohyal (basihyal) (Fig.       to be a single tooth plate on the glossohyal, but
30) is a median bone that supports the tongue and    this plate is actually composed of left and right
overlies the first basibranchial bone at the ante-   portions that fit over the bone rather than being
rior end of the branchial arch: In Scomberomo-       fused to it (Collette and Chao 1975:fig. 43f). The
rus, the glossohyal is roughly rod-shaped or coni-   glossohyal is a little wider in Grammatorcynus
cal in most species. Its width is 35-54% of its      than in Acanthocybium or most species of Scom-
length. It generally has a flat or narrowed ante-    beromorus, 47-55% oflength.
rior end and broadens posteriorly, but terminates        The size of the ventral protrusion varies among
in a small posterior cone or flattened projection.   the species of Scomberomorus. It is greatest in S.
The glossohyal protrudes ventrally adjacent to       sinensis, commerson, and cavalta. The glossohyal
the posterior articulation. The glossohyal of         is narrowest in S. multiradiatus and plurilinea-
Acanthocybium is flattened and spatulate with a      tus (Fig. 30a), 35-36% of width. It is widest in
broad anterior end, a narrow posterior end, and      S. sierra and munroi (Fig. 30b), 52-54%. The
no ventral protrusion (Fig. 30c). Grammator-          anterior end is widest in S. niphonius and sinen-
                                                                                                              587
                                                                                            FISHERY BULLETIN: VOL. 82, NO.4
sis, narrowest in brasiliensis, cavalla, and                   compared with 16-24%. Grammatorcynus also
commerson.                                                     has a low urohyal, depth 15-17% of length. The
                                                               length of the ventral margin is 68-91% of the
  Urohyal. -The urohyal (Fig. 31) is a com-                    length of the dorsal margin. The ventral margin
pressed, median, unpaired bone. The anterior end               of the urohyal does not extend as far posteriorly
of this element lies between, and is connected                 in Grammatorcynus, only 68-69% of the length
with, the hypohyals of the left and right sides.               of the dorsal margin compared with 80-91% in
The dorsal and ventral margins are thickened.                  Acanthocybium and Scomberomorus. Both Mago
The anterior end has an articulation head and                  Leccia (1958:322) and Devaraj (1977:32) stated
the posterior end is deep. The maximum depth                   that the posterior end of the dorsal margin was
posteriorly is 13-24% of the length of the dorsal              pointed but it ends in a distinct fork in all species
margin. The urohyal is not as deep in Acantho-                 of Scomberomorus and in Acanthocybium (Fig.
cybium as in the species of Scomberomorus,                     31c). The major difference in Grammatorcynus is
depth 13-15% of the length of the dorsal margin                that the shape of the posterior end of the dorsal
588
COLLETrE and RUSSO: SPANISH MACKERELS
margin is tripartite (Fig. 31d) instead of forked.    beromorus (caualla, regalis, and tritor), there is
Some specimens of Acanthocybium differ from           also a weak anteroventral process. Instead of a
the other two genera by having a slight indenta-      distinct process at this point, Acanthocybium and
tion in the anterior end of the urohyal.              the other species of Scomberomorus have an
                                                      angle where the anterior margin meets the ante-
  OPERCULAR APPARATUS.-Four wide flat                 roventral margin. The posterior margin and/or
bones (opercle, preopercle, subopercle, and inter-    the posteroventral margin of the opercle are
opercle) fit together to form the gill cover which    fimbriate in Acanthocybium and most species of
protects the underlying gill arches.                  Scomberomorus (brasiliensis, koreanus. lineola-
                                                      tus, maculatus, niphonius, queenslandicus, semi-
   Opercle.-The opercle is broad (Fig. 32), and it    fasciatus (Fig. 32a), sinensis, and tritor). Gram-
is overlapped laterally on its anterior margin by     matorcynus (Fig. 32d) has a much narrower and
the posterior half of the preopercle. The narrow,     more elongate opercle than do Acanthocybium
elongate, articular facet for the opercular process   or the species of Scomberomorus. The most elon-
of the hyomandibula is located on the mesial          gate opercle among Scomberomorus species is in
surface of the anterodorsal corner of the opercle.    S. multiradiatus (Fig. 32b). The broadest is in
Grammatorcynus (Fig. 32d) and most species of         Acanthocybium.
Scomberomorus have a weak process at the pos-
terodorsal corner. This process appears to be           Preopercle. -The preopercle (Fig. 33) is a large
absent in Acanthocybium (Fig. 32c) and Scom-          crescent-shaped flat bone, broadest at the lower
beromorus sinensis. In several species of Scom-       posterior angle. The anterior portion of the bone
a b
                                                                          d
                                                                                                    589
                                                                                      FISHERY BULLETIN: VOL. 82. NO.4
a b
                          c                                                       d
                  FIGURE 34.-Left subopercles in lateral view. a. Scomberomorus semifasciatus, New
                  Guinea, 510 mm FL. b. Scomberomorus multiradiatus, New Guinea, 294 mm FL. c.
                  Acanthocybium solandri, Revillagigedos Is., 1,068 mm FL. d. Grammatorcynus bilinea-
                  tus, Marshall Is., 424 mm FL.
27%). It is also short, relative to the long, narrow          35d) and Acanthocybium (40-49%, Fig. 35c) have
subopercle, in Grammatorcynus (25-26%). Dev-                  lower interopercles than most species of Scom-
araj (1977:33) mentioned differences in the shape             beromorus (Fig. 35a, b). The shallowest inter-
of the posteroventral margin and the dorsal edge              opercles in this genus are in S. plurilineatus
of the subopercle, but we have not noted any                  (45-47%), S. munroi (47-49%), S. niphonius
consistent differences between species in these               (47-49%), and S. semifasciatus (47-51%, Fig. 35a).
regions.                                                      A well-formed notch anterior to the crest on the
                                                              sloping anterior margin in Scomberomorus and
  Interopercle.-The interopercle (Fig. 35) is                 Grammatorcynus is relatively poorly developed
roughly oval in shape with a crest on the superior            in Acanthocybium, rendering the superior margin
margin. There is a well-developed facet on the                nearly straight. The posterior margin is rounded
mesial side to receive the articular process of the           in Scomberomorus and Grammatorcynus but di-
interhyal. The depth of the interopercle varies               vided into two by a notch in Acanthocybium.
from 37 to 61% of the length of the bone. The
deepest interopercles are in Scomberomorus si-                  BRANCHIAL APPARATUS.-The branchial
nensis (54-61%, Fig. 35b) and S. sierra (57-58%).             apparatus is composed of the five pairs of gill
The interopercles are moderately deep (50-58%)                arches, gill filaments, gill rakers, pharyngeal
in seven species: brasiliensis, commerson, ko-                tooth patches, and supporting bones. The general
reanus, lineolatus, multiradiatus, queenslandi-               arrangement in the Scomberomorini (Fig. 36) is
cus, and tritor. Grammatorcynus (37-42%, Fig.                 similar to that found in other scombrids such as
                                                                                                            591
                                                                                                  FISHERY BULLETIN: VOL. 82, NO.4
                  c                                                                                   d
      FIGURE 35.-Left interopercles in lateral view.     a. Scomberomorus semifasciatus, New Guinea, 510 mm FL. b. Scomber-
      omorus sinensis, Hong Kong, 677 rom FL.       c. Acanthocybium solandri, Revillagigedos Is., 1,068 mm FL. d. Grammator-
      cynus bilineatus, Marshall Is., 424 rom FL.
the Sardini (Collette and Chao 1975), Thunnus                         branchial. The third basibranchial has an ex-
(Iwai and Nakamura 1964b:22, fig. 1; de Sylva                         panded anterior end at its junction with the
1955:21, fig. 40), Scomberomorus (Mago Leccia                         second basibranchial and then tapers posteriorly.
1958:327, pI. 12), and Rastrelliger (Gnanamuttu                       A prominent groove is present anteriorly which
1971:14, fig. 6). Within the Scomberomorini, the                      accepts the medial anterior end of the second
most useful differences are in the number of gill                     hypobranchial. A section of cartilage extends
rakers. Most of the branchial bones bear patches                      posteriorly to articulate with the fourth and fifth
oftiny teeth.                                                         ceratobranchials.
chial arteries and veins. The ceratobranchials                     longest and bears two processes mesially. The
support most of the gill filaments and gill rakers.                anterior process articulates with the first pharyn-
The first three are morphologically similar and                    gobranchial, and the posterior process attaches
articulate with the posterior ends of their respec-                with the interarcual cartilage. The second epi-
tive hypobranchials. The fourth is more irregular                  branchial is similar to the first, but slightly
and attaches to a cartilage posterior to the third                 shorter. The anterior end is divided into two
basibranchial. The fifth ceratobranchial is also                   processes: the anterior process attaches to the
attached to the cartilage, has a dermal tooth                      second pharyngobranchial and the posterior pro-
plate fused to its dorsal surface, and the complex                 cess is coupled with the third pharyngobranchial
is termed the lower pharyngeal bone. It is covered                 by way of an elongate cartilage. This process is
with small conical teeth that are directed slightly                much more elongate in Grammatorcynus than in
posteriad.                                                         Acanthocybium or Scomberomorus. The third
                                                                   epibranchial is the shortest in the series. Lateral-
  Epibranchials. - The posterolateral end of each                  ly, it is attached with the third ceratobranchial;
ofthe four epibranchials is attached to the ends of                mesially, it is attached with the third pharyngo-
the first four ceratobranchials. Each epibranchial                 branchial. An elongate posterodorsal process is
bears a groove posterodorsally for the branchial                   present. This process joins with the fourth epi-
arteries and veins. The first epibranchial is the                  branchial. The fourth epibranchial is larger than
tt----IlASIIlRANCHIAL
----HYPOIlRANCHIAL
GILL RAKER~---
---CERATOIlRANCHIAL
    UPPER
                                                                                        PHARYNGOIlRANCHIAL STAY
FIGURE 36.-Branchial apparatus of Scomberomorus semifasciatus, New Guinea, 510 mm FL. Dorsal view of the gill arches with the
    dorsal region folded back to show their ventral aspect. Epidermis removed from right hand side to reveal underlying bones.
                                                                                                                                 593
                                                                                                      FISHERY BULLETIN: VOL. 82, NO.4
the third and is interposed between the fourth                         between numbers of gill rakers, gap between gill
ceratobranchial and pharyngobranchial. It may                           rakers, and size of food items, as Magnuson and
be described as a curved bone with the angle                            Heitz (1971) have clearly shown for a number of
formed by the lateral and medial arms being                             species of Scombridae. The number of gill rakers
much more acute in Grammatorcynus than in                              is easily countable and is a useful taxonomic
Acanthocybium or Scomberomorus. A dorsal pro-                           character in Spanish mackerels as well as among
cess arises from the middle of the bone and                            other groups of the Scombridae.
attaches to the third epibranchial.                                       Acantiwcybium differs from Grammatorcynus,
                                                                       Scomberomorus, and the other genera of Scom-
  Pharyngobranchials. -There are four pharyn-                          bridae by completely lacking gill rakers, Three
gobranchials attached basally to the epibranchial                      species of Scomberomorus have greatly reduced
of their respective gill arch. The first is long and                   numbers of gill rakers (Table 5): multiradiatus
slender, articulates dorsally with the prootic, and                    (1-4, sometimes only a single gill raker present,
is frequently called the suspensory pharyngeal                         at the junction of the upper and lower arches),
(Iwai and Nakamura 1964b). The elongate second                         commerson (1-8), and queenslandicus (3-9). One
pharyngobranchial bears a patch of teeth. The                          species, concolor, stands out from the rest of the
third is the largest element in the series; it has a                   genus in having many gill rakers, 21-27. Gram-
broad patch of teeth on its ventral surface, a                         matorcynus has more gill rakers (19"24) than 17
broad posterior end, and tapers to a narrow                            species of Scomberomorus but fewer than S.
anterior end. The third pharyngobranchial of                           concolor. There is a correlation between number
Scomberomorus is much more elongate than                               of gill rakers and number of jaw teeth (Tables 3,
those of Acanthocybiumand Grammatorcynus.                              4) in Scomberomorus. The species with the fewest
The fourth pharyngobranchial also bears a ven-                         gill rakers, S. multiradiatus, also has the fewest
tral tooth plate, has a rounded posterior end, and                     jaw teeth (i 8.0 on the upper jaw, 7.8 on the lower
has an elongate strut (pharyngobranchial stay)                         jaw) and the species with the most gill rakers, S.
mesially which overlaps the third pharyngo-                            concolor, has the most teeth (i 22.2, 19.7).
branchial. This stay is much more elongate in
Scomberomorus than in Acanthocybium and                                AXIAL SKELETON
Grammatorcynus.
                                                                           This section is divided into four parts: vertebral
  Gill Rakers. -The hypobranchial, ceratobran-                           number, vertebral column, ribs and intermuscu-
chial, and epibranchial of the first gill arch sup-                      lar bones, and caudal complex.
port a series of slender, rigid gill rakers. The
longest gill raker is at or near the junction of the                     Vertebral Number
upper and lower arches, between the ceratobran-
chial and epibranchial. There is a correlation                             Vertebrae may be divided into precaudal (ab-
 TABLE 5.-Total number of gill rakers on the first arch in Acantlwcybium, Grammatorcynus, and the species of Scomberomorus.
    Species         0      2   3   4   5   6   7    8   9 10 11    12 13 14 15 16 17 18 19 20. 21      22 23 24 25 26 27        N      x
S. brasiliensis                                                    9 49 37 22 11                                                129   13.8
S. cavalla                                     3    8 30 22        1 1                                                           66    9.3
S. commerson               0 37 28 27 12       3    2                                                                           110    4.3
S. concolor                                                                                             2 10 10     9   4   3    39   24.2
S. guttatus                                         3   7 24 53 25 9 2                                                          123   11.1
S. koreanus                                                   5 4 3 11         4                                                 27   13.2
S. Iineolatus                                       0   3 9 12 3 1                                                               29   10.5
S. maculatus                                               1 4 16 27 13        5   1                                             67   13.0
S. mulliradiatus         2 12 10   3                                                                                             27    2.5
S. munroi                                                  3   4  1                                                               8   10.8
S. niphonius                                                   3 18 14     2                                                     38   12.5
S. plurilineatus                                                 10 15     8                                                     34   13.0
S. queenslandicus              2   3   3 11    13   1                                                                            34    6.2
S. regalis                                                         1 2 4 19 13         6                                         46   15.4
S. samifasciatus                                    1 11   9   5   3  1                                                          32    9.8
S. sierra                                                          1 5 15 33 22        6                                         82   15.1
S. sinensis                                                        7  6 1 1                                                      16   12.6
S. tritor                                                          7 18 11 5                                                     41   13.3
Acanthocybium       30                                                                                                           30       0
Grammatorcynus                                                                             3   9 17     8   5   1                43   21.1
594
COLLETrE and RUSSO: SPANISH MACKERELS
dominal) and caudal (Tables 6-8). The first caudal                                        Within Scomberomorus, S. multiradiatus has
vertebra is defined as the first vertebra that                                          the most vertebrae (54-56), followed by S. macu-
bears a notably elongate haemal spine and lacks                                         latus (51-53), S. munroi (50-52), and S. guttatus
pleural ribs. Vertebral counts include the uro-                                         (47-52). The fewest vertebrae are found in S.
style which bears the hypural plate. Of the three                                       cavalla (41-43) and S. sinensis (41-42). Vertebral
genera, Acanthocybium has the most vertebrae                                            counts are useful in distinguishing species that
(62-64), Grammatorcynus the least (31), with the                                        had previously been confused (Collette and Russo
species of Scomberomorus falling between (41-                                           1979); S. koreanus (46) from S. guttatus (usually
56). The same situation exists with precaudal                                           48-51) as shown by Devaraj (1976); S. brasiliensis
vertebrae (Acanthocybium 30-32, Scomberomo-                                             (47-49) from S. maculatus (51-53) as shown by
rus 16-23, Grammatorcynus 12) and caudal ver-                                           Collette et al. (1978); and S. munroi (50-52) from
tebrae (Acanthocybium 31-33, Scomberomorus                                              S. niphonius (48-50) as shown by Collette and
20-36, Grammatorcynus 19). The presence of only                                         Russo (1980). In general, low vertebral number is
31· vertebrae in Grammatorcynus is a primitive                                          considered primitive in the genus, high vertebral
condition agreeing with Scomber and Rastrel-                                            number advanced.
liger, the most primitive members of the Scom-                                             Species with similar total numbers of vertebrae
brinae. The increased number of vertebrae in                                            may differ in numbers of precaudal and caudal
Acanthocybium is clearly a specialization.                                              vertebrae. Both S. cavalla and S. sinensis have
                                Species           12 I I 16 17 18 19 20 21 22 23 I I 30 31 32                                        N      i1
                           S. brasiliensis                                     4 78      1                                            83   20.0
                           S. cavalla                             1 28                                                                29   17.0
                           S. commerson                                     41 69                                                    110   19.6
                           S. concalor                                    1 14 5                                                      20   19.2
                           S. guttatus                                       1 14 43 2                                                60   20.8
                           S. koreanus                                         24                                                     24   20.0
                           S. lineolatus                                  2 13 1                                                      16   18.9
                           S. maculatus                                           30 3                                                33   21.1
                           S. multiradiatus                                     9 16                                                  25   20.6
                           S. munroi                                               2 10                                               12   21.8
                           S. niphonius                                            4 23           1                                   28   21.9
                           S. plurilineatus                                  1 12                                                     13   19.9
                           S. queenslandicllS                                1 13                                                     14   19.9
                           S. rega/is                                        1 9                                                      10   19.9
                           S. semifasciatus                               1 21                                                        22   19.0
                           S. sierra                                         3 45 3                                                   51   20.0
                           S. sinensis                                       9 3                                                      12   19.3
                           S. trilOr                                      2 24                                                        26   18.9
                           Acanthocybium                                                                    2       4       2          8   31.0
                           GrammalOtcynus           14                                                                                14   12.0
                 Species           19   20   21      22 23 24            25   26   27 28     29 30 31       32      33      34        35   36     N      i1
             S. brasiliensis                                                       7    72   4                                                     83   28.0
             S. cava//a                                             1    27   1                                                                    29   25.0
             S. commerson                                    11    33    49   7    9                                                              109   24.7
             S. concalor                                                           2    13    5                                                    20   28.2
             S. guttatus                                                                12   17   28   3                                           60   29.4
             S. koreanus                                                      22    2                                                              24   26.1
             S. lineo/atus                                                     3   11                                                              16   26.8
             S. maculatus                                                                         15   18                                          33   30.5
             S. multiradiatus                                                                                                   10    13    2      25   34.7
             S. munroi                                                                   2    8    2                                               12   29.0
             S. niphonius                                                        23      5                                                         28   27.2
             S. plurilineatus                                             2   10  1                                                                13   25.9
             S. queenslandicus                                                          10    4                                                    14   28.3
             S. regalis                                                                 10                                                         10   28.0
             S. semifasciatus                                             1   17    4                                                              22   26.1
             S. sierra                                                         1    9   36    5                                                    51   27.9
             S. sinensis                        2        9                                                                                         11   21.8
             S. tritor                                                             23    3                                                         26   27.1
             Acanthocybium                                                                                      4       2                           7   32.1
             Gramma/orcynus        14                                                                                                              14   19.0
                                                                                                                                                               595
                                                                                                     FISHERY BULLETIN: VOL. 82, NO.4
          TABLE 8. -Total number ofvertebrae in Acanthocybium, Grammatorcynus, and the species of Scomberomorus.
                 Species      31 /I 41   42 43 44 45 46 47 48 49 50 51            52 53 54 55 56 I I 62 63 64     N      51
          S. brasiliensis                                  11   67   5                                             83   47.9
          S. cava//a                 2 28 1                                                                        31   42.0
          S.   commerson                7 16 34 39 15                                                             111   44.4
          S. concolor                               1 11        8                                                  20   47.4
          S. guttatus                                  1        8    5 16 28      2                                60   50.1
          S. koreanus                              23 2                                                            25   46.1
          S. linealatus                       1 3 13                                                               17   45.7
          S. maculatus                                                        13 19   2                            34   51.7
          S. multiradiatus                                                                1 15   9                 25   55.3
          S. munroi                                                       3   9   1                                13   50.8
          S. niphonius                                          3 20      6                                        29   49.1
          S. plurilineatus                        2 12                                                             14   45.9
          S. queenslandicus                                     12   3                                             15   48.2
          S. rega/is                                        1    9                                                 10   47.9
          S. semifasciatus                     1 23    3                                                           27   45.1
          S. sierra                                    1   8 38      4                                             51   47.9
          S. sinensis               10   1                                                                         11   41.1
          S. triWr                                    25    1                                                      26   46.0
          Acanthocybium                                                                               2   3   2     7   63.0
          Grammatorcynus      16                                                                                   16   31.0
41-43 vertebrae, but S. cavalla has 16-17 pre-                             Variable characters are found on the haemal
caudal and 24-26 caudal, while S. sinensis has 19                        arches and haemapophyses. Laterally directed
or 20 precaudal and 21-22 caudal vertebrae (com-                         parapophyses, arising from the middle of the
pare Tables 6 and 7).                                                    centrum, appear on the fourth to sixth vertebrae,
                                                                         where the intermuscular bones and pleural ribs
Vertebral Column                                                         are encountered (see section on Ribs and Inter-
                                                                         muscular Bones). The parapophyses become
  The neural arches and spines are stout and                             broader and longer posteriorly and gradually
compressed on the first to the fifth or sixth                            shift to the anteroventral portion ofthe centra. In
vertebrae in most species of Scomberomorus.                              lateral view, the first ventrally visible parapo-
Compressed neural spines extend to the seventh                           physes are found on the 7th-9th vertebra in
vertebra in S. commerson and Acanthocybium                               Scomberomorus, usually the 8th, on the 6th-7th
but only to the fourth vertebra in Grammator-                            in Grammatorcynus, and on the 14th-15th in
cynus. Posteriorly, toward the caudal peduncular                         Acanthocybium.
vertebrae and caudal complex, the neural spines                             Posteriorly, the distal ends of the paired para-
bend abruptly backward and cover most of the                             pophyses meet, forming the first closed haemal
neural groove; caudally they merge into the cau-                         arch. The first closed haemal arch is on the 8th
dal complex as in Thunnus (Kishinouye 1923;                              vertebra in Grammatorcynus (Fig. 37d), 10th-
Gibbs and Collette 1967) and the bonitos (Collette                       16th in Scomberomorus (Fig. 37a, b), and 25th-
and Chao 1975). Neuropophyses are present on                             28th in Acanthocybium (Fig. 37c). This location
all centra except the last one or two. The neural                        is correlated with the total number of vertebrae
prezygapophyses on the first vertebra are modi-                          (Table 8). Among the species of Scomberomorus,
fied to articulate with the exoccipital where the                        the first closed haemal arch is most anterior in S.
vertebral axis is firmly articulated with the                            cavalla (10th-11th vertebra, Fig. 37a) and S.
skull. They are stronger at the anterior portion of                      sinensis (12th), the two species with the few-
the vertebrae and are spurlike spines on the                             est vertebrae (40-43). The most posterior first
peduncular vertebrae and in the caudal complex.                          haemal arch is on the 15th-16th vertebra in S.
Neural postzygapophyses arise posterodorsally                            munroi and S. niphonius (Fig. 37b) and on the
from the centrum and overlap prezygapophyses                             14th-15th in S. multiradiatus, species with many
posteriorly. The postzygapophyses progressively                          vertebrae (48-56). The other 13 species, including
merge into the neural spine in the peduncular                            S. guttatus and S. maculatus with high vertebral
region to disappear by the last 6-8 vertebrae. The                       counts (47-53), have the first haemal arch located
basic structure and elements of the neural arches                        at an intermediate position, 'on the 13th-14th
and neurapophyses are similar to those of other                          vertebra. The haemal spines become elongate
scombrids (Kishinouye 1923; Conrad 1938; Mago                            and point posteriorly until they abruptly become
Leccia 1958; Nakamura 1965; Gibbs and Collette                           more elongate on the first caudal vertebra. The
1967; Collette and Chao 1975; Potthoff 1975).                            paired pleural ribs (see section on Ribs and Inter-
596
COLLETTE and RUSSO: SPANISH MACKERELS
a b
                  c                                                                d
FIGURE 37. -Vertebra bearing first closed haemal arch in left lateral view (middle vertebra of each set of three). \ertebrae num-
bered from anterior. a. Scomberorrwrus cavalla, Chesapeake Bay, 672 mm FL, 1.5 x . b. Scomberorrwrus niphonius, Japan, 683
mm FL, 1.5 x. c. Acanthocybium solandri, Revillagigedos Is., 1,068 mm FL, Ix. d. Grommatorcynus bilineatus, Queensland, 521
mmFL, 1.5x.
muscular Bones} attach to the distal ends of the                   (Fig. 38). The haemal postzygapophyses fuse with
parapophyses and arches and extend posteriorly                     the haemal spine or disappear in the caudal
to the last precaudal vertebra. Symmetrically                      peduncle region.
with the neural arches and spines on the' caudal                     The haemal prezygapophyses arise from the
vertebrae, the haemal arches and spines bend                       anterior base of the haemal arches on the 8th-
posteriorly at the caudal peduncle and then                        11th vertebra in Grammatorcynus, the lOth-22d
merge into the caudal complex.                                     in Scomberomorus, and the 23d-25th in Acan-
  Haemapophyses include pre- and postzygapo-                       thocybium. The most anteriorly located prezyga-
physes but their relative positions are different                  pophyses in Scomberomorus are in S. cavalla, on
from those of the neurapophyses, and they do not                   the 10th-12th vertebra. The most posteriorly lo-
overlap. The first haemal postzygapophyses arise                   cated are in S. sinensis (22d), S. queenslandicus
posteroventrally from the 6th-7th centrum in                       (18th-20th), S. multiradiatus (18th-19th), and S.
Grammatorcynus, the 6th-8th in Scomberomo-                         maculatus (17th-20th). The other 15 species have
rus, and the 9th-10th in Acanthocybium, and                        the first haemal prezygapophyses on the 13th-
they reach their maximum length at about the                       19th vertebra. The data from Devaraj (1977)
junction of the precaudal and caudal vertebrae                     for the four Indian species fall in the interme-
                                                                                                                            597
                                                                                                FISHERY BULLETIN: VOL. 82, NO.4
a b
                         c                                                            d
       FIGURE 38. -Junction of precaudal and caudal vertebrae in left lateral view (middle vertebra of each set of three
       is first caudal vertebra). Vertebrae numbered from anterior. a. Scomberomorus cavalla, Florida, 688 mm FL,
       1 x. b. Scomberomorus munroi, Cairns, Queensland, 800 mm FL, 1 x. c. Acanthocybium solandri, Miami, Fla.,
       1,242 mm FL, 1x . d. Grammatorcynus bilineatus, Timor Sea, 453 mm FL, 1.5 x .
diate group, but we found more variation, usu-                     the 56th-57th in Acanthocybium. Devaraj (1977)
ally a range of three or four vertebrae, than                      found only one inferior foramen in Acanthocyb-
Devaraj did. As do their counterpart neural pre-                   ium, on the 49th vertebra, but we found them
zygapophyses, the haemal prezygapophyses per-                      on 7-9 vertebrae in 10 specimens from the At-
sist symmetrically into the caudal complex.                        lantic, Indian, and Pacific Oceans. In Scom-
  Struts between the haemal arch and the cen-                      beromorus, inferior foramina begin furthest an-
trum form the inferior foramina. Foramina are                      teriorly and extend furthest posteriorly in S.
present from the 18th-19th to the 27th-28th ver-                   multiradiatus, from the 21st-23d to the 51st-52d
tebra in Grammatorcynus, the 21st-33d to the                       vertebra. They begin furthest posteriorly in S.
35th-52d in Scomberomorus, and the 49th-51st to                    maculatus (29th-33d), S. niphonius (27th-33d),
598
COLLETI'E and RUSSO: SPANISH MACKERELS
and S. concolor (26th-38th). They extend posteri-        vertebra: S. guttatus, S. munroi, and S. niphon-
orly only to the 35th-36th vertebra in S. cavalla.       ius. The condition in the remaining 12 species
                                                         either varies or is based on only a single speci-
Ribs and Intermuscular Bones                             men. The greatest number of intermuscular
                                                         bones are found in S. guttatus, 26-30 pairs.
   Pleural ribs are present from the 2d or 3d            Counts as high as 27 are found in S. koreanus, S.
vertebra posterior to the 12th-31st vertebra, de-        maculatus, and S. multiradiatus. Except for S.
pending on the species. Intermuscular bones start        koreanus, the other three species with high num-
on the back of the skull or the first vertebra and       bers of intermuscular bones also have high verte-
extend to the 10th-30th vertebra.                        bral counts. The fewest intermuscular bones in
   Correlated with its high number of vertebrae,         Scomberomorus are found in S. cavalla and S.
Acanthocybium has the most pleural ribs (30              sinensis, 20 pairs, and S.lineolatus, S. niphonius,
pairs) of the three genera. Similarly, Gramma-           and S. semifasciatus, 20-23 pairs each. Gramma-
torcynus has the fewest pleural ribs (10 pairs) in       torcynus has relatively few intermuscular bones
agreement with its low number of vertebrae.              (19-21 pairs) and Acanthocybium, unexpectedly,
Species of Scomberomorus are intermediate in             has the fewest (10 pairs) among the genera under
number of vertebrae and pleural ribs (15-21              discussion. This seems odd in view of its high
pairs). The first pleural rib articulates with the       number of vertebrae and pleural ribs. Intermus-
centrum of the third vertebra in Grammator-              cular bones extend back furthest in the four
cynus and most specimens of Scomberomorus.               species with the highest number, S. guttatus (to
The first rib articulates with the centrum of the        the 25th-29th), S. koreanus (24th-29th), S. macu-
second vertebra in Acanthocybium, as noted by            latus (22d-27th), and S. multiradiatus (26th).
Devaraj (1977:44), and in one or two specimens of        They extend back the shortest distance in S.
at least three species of Scomberomorus: com-            cavalla (to the 19th), the species with the fewest
merson (1 of 5), maculatus (2 of 10), and sinensis       intermuscular bones. Correlated with their low
(our only specimen). Pleural ribs extend posteri-        number in Grammatorcynus and Acanthocybium,
orly usually to about the last precaudal vertebra.       the bones extend back to the 19th-21st and to the
They extend to the 31st vertebra in Acantho-             10th vertebra respectively.
cybium, to the 17th-23d in Scomberomorus, and
only to the 12th in Grammatorcynus. Of the               Caudal Complex
species of Scomberomorus, the most ribs are
found in S. munroi (20-21 pairs), S. guttatus (20),         The supporting bones ofthe caudal fin (Fig. 39)
S. brasiliensis (18-20), and S. maculatus (18-20).        consist of four or five preural centra in Scomber-
The fewest are in S. cavalla (15 pairs), S. semi-         omorus. Having four preural centra supporting
fasciatus (15-17), and S. concolor (16-18). Ribs          the caudal fin is not a diagnostic character of the
extend back furthest in the same four species             family as stated by Potthoff (1975). Only three
with the most pleural ribs, S. munroi (to the 22d-        preural centra support the caudal fin in Gram-
 23d), S. guttatus (20th-22d), S. brasiliensis (20th-     matorcynus, Scomber, and Rastrelliger. Five cen-
 22d), and S. maculatus (17th-22d). They extend           tra support the caudal fin in Acanthocybium. In
 back the shortest distance in S. cavalla (to the         Scomberomorus and Acanthocybium, preural
 17th) and S. semifasciatus (17th-19th). As Dev-          centra 4 and 3 bear stout haemal and neural
 araj (1977:44) noted, the anterior ribs in Acan-         spines. Preural centrum 2 has an epural. Preural
 thocybium are very broad compared with those in          centra 2 and 3 each have autogenous haemal
 Scomberomorus.                                         . spines. The urostyle represents a fusion of preural
   Intermuscular bones start on the first vertebra        centrum 1 and the ural centrum (Potthoff 1975).
 in Acanthocybium, Grammatorcynus, and some               The urostyle is fused with the triangular hypural
 species of Scomberomorus. In some specimens of           plate posteriorly and articulates with the uro-
 at least 13 species of Scomberomorus, the first          neural dorsally. Dorsally, the urostyle bears an
 intermuscular bone is attached to the exoccipital        autogenous epural and ventrally, the autogenous
 on the skull. This appears to be the usual condi-        parhypural. Preural centra 2-4 are compressed in
 tion in three species, S. concolor, S. koreanus          Scomberomorus and Acanthocybium but not so
 (also noted by Devaraj 1977), and S. sierra. At          much as in the bonitos and tunas (Collette and
 least three other species usually appear to have         Chao 1975; Gibbs and Collette 1967). Preural
 the first intermuscular bone attached to the first       centrum 4 is not at all shortened in Grammator-
                                                                                                         599
                                                                             FISHERY BULLETIN: VOL. 82, NO.4
///)!:lk--- HY PUR A L 5
HYPURALS 3 + 4
PARHYPURAL
URONEURAL
b PARHYPURAPOPHYSIS
NEURAL SPINES
UROSTYLE
(Fig. 39b). This fusion was also noted by Conrad                            been provided by several authors: S. sinensis and
(1938), Fierstine and Walters (1968), and Devaraj                           S. niphonius (Kishinouye 1923:pI. 23, fig. 40, pI.
(1977). The parhypural appears to be partially                              24, fig. 41); S. caualla, S. maculatus, and S.
fused with the hypural plate in Scomberomorus                               regalis (Mago Leccia 1958:pI. 15, figs. 1-3); S.
niphonius (see Kishinouye 1923:figure 41) and S.                            tritor (Monod 1968:fig. 736); S. koreanus, S. gut-
plurilineatus. The two haemal arches preceding                              tatus, S. lineolatus, and S. commerson (Devaraj
the parhypural are autogenous in the three gen-                             1977:fig. 15); S. semifasciatus (Collette and Russo
era although Devaraj (1977) stated that the two                             1979:fig. 4B); and Acanthocybium (Kishinouye
haemal arches were fused with their centra in                               1923:pI. 23, fig. 39; Conrad 1938:fig. 8; and Monod
Acanthocybium.                                                              1968:fig. 737). There are problems with nomen-
   The parhypural has a strongly hooked process,                            clature and labelling of various elements in these
the parhypurapophysis (or hypurapophysis), at                               papers, as discussed by Potthoff (1975).
its proximal end. The parhypurapophysis slopes
upwards in a similar manner in Scomberomorus                                DORSAL AND ANAL FINS
and Grammatorcynus but has a right angle and
then a level projection in Acanthocybium. Dev-                                 Scombrids have two dorsal fins. The first dorsal
araj (1977:44) claimed that "the hypurapophysis                             fin is composed of stiff spines and is separated
is reduced to a small process" in Acanthocybium,                            from the second dorsal by a short distance, except
and his figure seems to show that. This conclu-                             in Rastrelliger, Scomber, and Auxis which have
sion must be based on a damaged specimen be-                                a greater distance between the fins. The second
cause the parhypurapophysis is well developed in                            dorsal fin is composed of soft rays and is followed
our specimens (Fig. 39b). The concentrations of                             by a series of free finlets, 6-11 in Scomberomorus.
tendons and muscular bands between the parhy-                               The anal fin is located approximately opposite
purapophysis and caudal rays in scombroids were                             the dorsal fin and is composed largely of soft rays
described by Fierstine and Walters (1968), but no                           followed by a series of anal finlets similar to the
specific study of this aspect was made during our                           dorsal finlets, 5-12 in Scomberomorus. Some
work.                                                                       scombrids have a free or partially free spine
   There are two epurals as in other scombrids                              preceding the anal fin, but in Scomberomorus it
(Potthoff 1975). In shape and size, the anterior                            is difficult to tell if the anterior elements are
epural (epural 1) resembles the neural spine of                             spiny or soft rays; therefore, all are included
adjacent preural centrum 3. The posterior epural                            as "anal rays". Numbers of fin rays are useful
(epural 2) is a free splint located between the                             characters in distinguishing groups of species in
anterior epural and the uroneural and fifth hy-                             Scomberomorus.
pural which are joined together.                                               The range in number of spines in the first
   Illustrations of the caudal complex of Acantho-                          dorsal fin is 11-27 among Scomberomorus, Acan-
cybium and 11 species of Scomberomorus have                                 thocybium, and Grammatorcynus (Table 9). The
                TABLE 9.-Number of spines in the first dorsal fin of Acanthocybium, Grammatorcynus, and the
                                                        species of Scomberomorus.
                      Species       11   12   13   14   15   16   17   18   19   20   21   2223   24   25   26   27   N     ii
               S.   brasiliensis                                   61 67     2                                        130   17.5
               S.   cavalla                    3    6   42  2       3   1                                              58   14.9
               S.   commerson                            3 50     107   5                                             165   16.7
               S.  conc%r                                1  3      20   7                                              31   17.1
                S.guttatus                               6 30      59   7                                             102   16.7
                S. koreanus                         2   20  5        1                                                 28   15.2
                S. linealatus                            2 10      15   1                                              28   16.5
                S. maculatus                                       10 40     7                                         57   17.9
                S. multlradiatus                                     8 14    4                                         27   17.8
                S. munroi                                                         6    8                               15   20.7
                S. niphonius                                                 4   29    5                               38   20.0
                S. plurilineatus                        12   17    2                                                   31   15.7
                S. queenslandicus                             8   24    2                                              34   16.8
                S. regalis                                    9   31    6                                              46   16.9
                S. semifasciatus               1   11   17                                                             29   14.6
                S. sierra                                1    3   36   39                                              79   17.4
                S. sinensis                              1    7    6                                                   14   16.4
                S. tritar                                3    7   19   11                                              40   17.0
                Acanthocybium                                                                 2    2    7   19    4    34   25.6
                Grammatarcynus       2   42                                                                            45   12.0
                                                                                                                                   601
                                                                                                                      FISHERY BULLETIN: VOL. 82, NO.4
usual variation for a species is 3 or 4 spines.                                       (Table 10). The usual variation for a species is 3
Acanthocybium has the most dorsal spines, 23-27.                                      or 4 finlets. The highest counts are in S. commer-
Of the species of Scomberomorus, munroi (20-22)                                       son and S. queenslandicus, both usually 9 or 10
and niphonius (19-21) both usually have 20 or 21                                      finlets. The lowest counts, 6 or 7, are in S.
dorsal spines, more than the other 16 species in                                      sinensis and Grammatorcynus. The next fewest
the genus, and this is one reason that S. munroi                                      dorsal finlets, 7 or 8, rarely 9, are found in S.
was not described until recently (Collette and                                        multiradiatus. The low number of finlets and
Russo 1980). Four species of Scomberomorus                                            high number of second dorsal fin rays in this
have low counts: cavalla 12-18, usually 15; semi-                                     species may indicate an extension of the fin at the
fasciatus 13-15; koreanus 14-17, usually 15; and                                      expense of the number of finlets.
plurilineatus 15-17. Grammatorcynus has even                                             Anal fin rays (Table 11) show a similar trend to
fewer dorsal spines, 11-13, usually 12. Dorsal                                        that of dorsal fin rays. The range in the three
spine counts are roughly correlated with verte-                                       genera is 11-29; the usual variation for a species
bral number (Table 8). Acanthocybium has the                                          is 4-6 rays. Four of the five species of Scomber-
highest counts of precaudal and total vertebrae;                                      omorus with high counts of second dorsal fin rays
S. munroi and S. niphonius have the highest                                           also have high counts of anal fin rays: multira-
precaudal vertebral counts, but not highest total                                     diatus 25-29; korean us 20-24,. usually 22 or 23;
vertebral number; S. cavalla has the lowest pre-                                      guttatus 19-23, usually 20-22; and semifasciatus
caudal and total counts in the genus; and Gram-                                       19-22, usually 21 or 22. No species of Scomber-
matorcynus has the fewest precaudal, caudal, and                                      omorus stands out with very low counts but six
total vertebrae.                                                                      species usually have 17-19 anal fin rays, lower
   The range in number of second dorsal fin rays                                      than the other species of the genus: brasiliensis,
is 10-25 in the three genera (Table 10). The usual                                    cavalla, commerson, munroi, niphonius, and si-
variation for a species is 4 or 5 rays. Five species                                  nensis. Acanthocybium (11-14) and Grammator-
of Scomberomorus have high counts: multiradia-                                        cynus (11-13, usually 12) again have the fewest
tus 21-25, usually 23 or 24; korean us 20-24, usu-                                    rays in this fin.
ally 22 or 23; guttatus 18-24, usually 20-22; semi-                                      Anal finlets range 5-12 in the three genera
fasciatus 19-22, usually 20; and plurilineatus                                        (Table 11) with the usual variation for a species
19-21, usually 20. The lowest counts in Scomber-                                      being 4 finlets. The most finlets are found in S.
omorus are in sinensis, 15-17 rays. Acanthocyb-                                       queenslandicus (9-11, usually 10) followed by
ium (12-16) and Grammatorcynus (10-12, usually                                         commerson and lineolatus usually having 9 or 10
11) have even fewer second dorsal fin rays. Verte-                                    finlets, similar to the situation with dorsal fin-
bral counts (caudal and total) are highest in S.                                      lets. The lowest counts, usually 6 finlets, are
multiradiatus and lowest in S. sinensis. Gram-                                        found in S. multiradiatus, S. sinensis, and Gram-
matorcynus has the fewest vertebrae.                                                  matorcynus, just as with dorsal finlets. Again the
   Dorsal finlets number 6-11 in the three genera                                     anal fin of S. multiradiatus appears to have
TABLE 10. - Number ofsecond dorsal fin rays and dorsal finlets inAcanthocybium, Grammatorcynus, and the species of Scomberomorus.
602
COLLETIE and RUSSO: SPANISH MACKERELS
    TABLE n.-Number of anal fin rays and anal finlets in Acanthocybium, Grammatorcynus, and the species of Scomberomorus.
                                                   Anal rays                                                      Finlets
       Species       11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29        N    x     5   6   7   8    9 10 11 12         N      x
S. brasiliensis                     6 35 30 44 9                                     124 18.1           1 41    84 2                128   8.7
S. cavalla                          1 9 27 21 1                                       59 18.2           4 33    19 4                 60   8.4
S. commerson                        8 29 72 43 12 1                                  165 18.2           1 17    84 57       4   2   165   9.3
S. concolor                                  1 17 9 2 1                               30 20.5        1 15 15                         31   7.5
S. guttatus                                  2 23 49 26 3                            103 21.0          20 63    17 4                104   8.0
S. koreanus                                     1 3 13 11                             29 22.3          17 11     1                   29   7.4
S. Iineolatus                          2 0 7 17 2 1                                   29 19.7           2  2    14 11                29   9.2
S. maculatus                           4 11 24 18                                     57 19.0           1 33    21  1               56    8.4
S. multiradiatus                                                3    7   8   8   1    27 26.9       18 8   1                        27    6.4
S. munroi                              8 5      2                                     15 17.6              2
                                                                                                           10 3                     15    9.1
S. niphonius                        1 12 20     3 1                                   37 17.8           7 20
                                                                                                           10                       38    8.0
S. plurilineatus                                4 16 13                               34 20.3           1 15
                                                                                                           17 2                     35    8.6
S. queenslandicus                   2   1 6    14 8                                   31 18.8               8 21            2       31    9.8
S. regalis                          1   4 15   24 1                                   46 18.4         3 34 8 1                      46    8.2
S. semifasciatus                                1 4 17 11                             33 21.2         1 11 19 2                     33    8.7
S. sierra                           3   6 19   33 17 1                                79 18.7         6 48 23 1                     78    8.2
S. sinensis                         1   3 9     1                                     14 17.7   2 9 3                               14    6.1
S. tritor                               5 20   14 2                                   41 18.3         6 27 8                        41    8.0
Acanthocybium        1 11 14   8                                                      34 12.9        13 12 7 2                      34    7.9
Grammatorcynus       5 22 17                                                          44 12.3   1 39 4                              44    6.1
                 c
     FIGURE 40.-Left posttemporals in lateral view. a. Scomberomorus cavalla, Chesapeake Bay, 672 mm FL, 1.5x. b. Scomber-
     omorus plurilineatus, South Africa, 910 mm FL, Ix. c. Acanthocybium solandri, Revillagigedos Is., 1,068 mm FL, Ix. d.
     Grammatorcynus bilineatus, Queensland, 521 mm FL, 1.5x.
                                                                                                                                          603
                                                                                  FISHERY BULLETIN: VOL. 82, NO.4
  Scomberomorus (Fig. 40a, b) but this shelf is          phonius, and semifasciatus. Grammatorcynus
  absent in Acanthocybium (Fig. 40c) and Gram-            also has a short median process (66-71%). Mea-
  matorcynus (Fig. 40d). A variably sized notch is        sured this way, the longest lateral processes are in
  present at the middle of the posterior edge of the      koreanus (53-55%), sierra (52%), plurilineatus
  flat body of the bone. Grammatorcynus has a             and regalis (50-51%), guttatus (49-55%), and
  prominent, anteriorly directed spine on the ven-        Grammatorcynus (48-52%). The shortest lateral
  tral margin of the median process about one-third       processes are in munroi (37-40%), tritor (41-42%),
  of the distance from the body of the bone to the       and cavalla and niphonius (41-44%). Acantho-
  anterior tip of the process. In Acanthocybium,         cybium also has a relatively short lateral process
. there is a separate process extending anteriorly       (42-51%) .
  from the ventral wall of the median process. This         Still another way of comparing relative lengths
  auxiliary process (Kishinouye 1923) is as long or      of the processes among species is to divide the
  almost as long as the median process itself. It        length of the lateral process by the length of the
  ends in a series of several pointed processes.         median process, both measured on the inner
  (Both Conrad 1938 and Devaraj 1977 referred to         surface of the posttemporal. By this technique,
  the auxiliary process as the median process.)          relatively greater proportional measurements of
     The lengths of the median and lateral processes     the lateral processes are found in S. koreanus
  vary among· the species under discussion. To           (75-77% of median process), S. semifasciatus
  compare the species quantitatively, we made two        (76%), Grammatorcynus (71-74%), S. multiradia-
  sets of measurements and divided them by the           tus (70-73%), and S. guttatus (69-71%). Relatively
  total length of the posttemporal, from the ante-       shorter proportional measurements of these lat-
  rior tip of the median process to the posterior        eral processes (55-63%) are found in Acantho-
  margin of the bone. We measured to the tips of         cybium and five species of Scomberomorus: ca-
  the median and lateral processes from the most         valla, munroi, niphonius, queenslandicus, and
  posterior point on the shelf between the two           tritor.
  processes. Largely because of the lack of a shelf         Another difference lies in the presence and, if
  between the processes in Acanthocybium and             present, in the shape of a spine or process at the
  Grammatorcynus, both processes appear to com-          base of the lateral process on the inner surface of
  prise a larger proportion of total posttemporal        the posttemporal. It appears to be absent in seven
  length than they do in the species of Scombero-        species of Scomberomorus: cavalla, guttatus,
  morus, 53-65% vs. 36-51% for the median process        maculatus, queenslandicus, regalis, semifascia-
  and 27-40% vs. 15-36% for the lateral process.         tus, and tritor. It is small and inconspicuous in
  The median process is longer in Acanthocybium          six species: brasiliensis, concolor, korean us , line-
  than in Grammatorcynus, 56-65% vs. 53-60%,             olatus, multiradiatus, and sierra. It is broader,
  but the lateral process is slightly longer in Gram-    usually shaped more like a shelf with a point in
  matorcynus than in Acanthocybium, 35-40%               the remaining five species of the genus: commer-
  vs. 27-37%. Among the species of Scomberomo-           son, munroi, niphonius, plurilineatus, and some-
  rus, the longest median processes (48-51% total        times in sinensis. The process has the form of
  length) are found in S. commerson, plurilineatus,      a wide flap in Grammatorcynus and of a long
  and sierra; the shortest (36-40%) in cavalla,          blunt process in Acanthocybium. Devaraj's (1977)
   semifasciatus, and sinensis. The longest lateral      data for Indian species correspond well with
  processes are in koreanus (36%) and plurilinea-        ours.
  tus (30-31%); the shortest (15-19%) in cavalla,
   munroi, niphonius, queenslandicus, and tritor.        Supracleithrum
     To eliminate the confounding factor ofthe shelf
  between the median and lateral processes, mea-           The supracleithrum (Fig. 41) is an ovate bone,
   surements also were made on the inner surface of      overlapped dorsolaterally by the posttemporal
   the bone, from the point where the two processes      and overlapping the anterior part of the dorsal
   diverge to the tips of the processes: Measured this   winglike extension of the cleithrum. The anterior
   way, the longest median processes (74-79% of          border of the bone on the mesial side is thickened
   total length of the posttemporal) are in Acantho-     into a ridge. Dorsally there is a small handle-
  cybium and six species of Scomberomorus. The           shaped process which curves into the posterior
  shortest median processes (63-68%) are in three        margin to end in a notch at the posterodorsal
   species of Scomberomorus: multiradiatus, ni-          aspect. A branch of the lateralis system extends
 604
COLLETTE and RUSSO: SPANISH MACKERELS
from the posterior notch of the posttemporal onto              factor because the smallest species of 8comber-
the supracleithrum. This short canal lies ventral              omorus (8. multiradiatus) and small specimens
to the dQrsal process of the supracleithrum and                of large species tend to have narrower supra-
extends to the posterior edge ofthe bone.                      cleithra than large species and large specimens.
  The maximum width of the supracleithrum                      For example, the percentages for a series of five
varies from 42 to 75% of the total length of the               8.commerson are as follows: 354-364 mm FL,
bone in the three genera. The supracleithrum is                38-43%; 493 mm, 42%; 1,052 mm, 39-44%; 1,155
widest in Grammatorcynus (72-75% of length),                   mm,47%.
8comberomorus niphonius (55-62%), and 8. line-                   The dorsal process is prominent in Acanthocyb-
olatus (53-57%). It is narrowest in 8. multiradia-             ium (Fig. 41c), Grammatorcynus (Fig. 41d), 8.
tus (43-53%), sinensis (45-46%), semifasciatus                 cavalla, commerson, and lineolatus (Fig. 41a). It
(46-51%), and sierra (45-49%). Specimen size is a              is small but distinct in 8. multiradiatus (Fig.
                                                               41b). In most of the other species of 8comberomo-
                                                               rus,' it tends to be less sharply set off from the
                                                               main body of the supracleithrum.
Supratemporal
a b
CORACOID
                  POSTERIOR
                      PLA TE
                                                      SCAPULAR
                                                       FORAMEN
                                                                          e
                    c
                                             ANTERODORSAL
                                                    SPI NE
ly. The posterodorsal margin of the scapula is                           bers of the family to the more advanced: Scom-
drawn out into a facet which accepts the most                            brini 18-21, Scomberomorini 19-26, Sardini 21-28,
anterior ray of the pectoral fin. The scapula is                         Thunnini (except for Thunnus) 22-29, Thunnus
pierced by a large, usually round foramen near                           30-36.
the lateral margin with the inner shelf of the
cleithrum. A prominent suture leads from the                             Radials
scapular foramen to the ventral margin of the
scapula. The foramen is largest in Acanthocyb-                              The four radials differ in size and shape and are
ium (Fig. 43c), Scomberomorus brasiliensis, and                          attached directly to the thickened posterior edges
S. regalis. It is smallest in S. guttatus and S.                         of the scapula and coracoid (Fig. 43). The size of
niphonius. We did not find it very large in S.                           the radials increases posteroventrally. Small for-
korean us (Fig. 43e), as stated by Devaraj (1977:                        amina are located between the second and third,
47). It is intermediate in size in Grammatorcynus                        and the third and fourth radials counting poste-
(Fig. 43d) and the other species of Scomberomo-                          riorly. In Scomberomorus and Acanthocybium
rus (e.g., S. semifasciatus and S. sinensis, Fig.                        (Fig. 43a-c), the first two radials and the upper
43a, b).                                                                 third of the third radial attach to the scapula; the
                                                                         ventral third of the third plus the fourth radial
Pectoral Fin Rays                                                        attach to the coracoid. In Grammatorcynus the
                                                                         first two radials attach to the scapula, the second
  The first (uppermost and largest) pectoral fin                         two to the coracoid (Fig. 43d). A much larger
ray articulates directly with a posterior process of                     foramen is present between the largest (fourth)
the scapula. The other rays attach to the radials.                       radial and the coracoid. Posteriorly, this foramen
The number of pectoral rays ranges from 19 to 26                         is framed by a posterior process of the upper part
in the three genera (Table 12). Most species of                          of the fourth radial meeting an anterior process
Scomberomorus usually have 22 or 23 rays. Five                           from the posterior margin of the coracoid. The
species average fewer, with a mode of 21 rays:                           process on the fourth radial is only slightly devel-
concolor, guttatus, maculatus, sierra, and tritor.                       oped in Grammatorcynus (Fig. 43d). The foramen
The two species in the genus with the most                               is considerably larger than the scapular foramen
pectoral rays are S. plurilineatus (21-26, x 23.1)                       in five species of Scomberomorus: guttatus, ko-
and S. semifasciatus (22-25, x 23.3). Acanthocyb-                        reanus (Fig. 43e), lineolatus, niphonius, and plu-
ium and Grammatorcynus have slightly higher                              rilineatus. It is slightly larger than the scapular
counts than do the species of Scomberomorus, 22-                         foramen in seven species: commerson, concolor,
26, mostly 24 or 25.                                                     maculatus, multiradiatus, munroi, queenslandi-
   Within the Scombridae, the number of pectoral                         cus, and tritor. The two foramina are about equal
fin rays increases from the more primitive mem-                          in size in six species of Scomberomorus (brasil-
                                                                         iensis, caualla, regalis, semifasciatus (Fig. 43a),
                                                                         sierra, and sinensis (Fig. 43b» and Grammator-
                                                                         cynus (Fig. 43d). The scapular foramen is much
TABLE   12.-Number of pectoral fin rays in Acanthocybium,
      Grammatorcynus, and the species of Scomberomorus.
                                                                         larger than the foramen following the fourth
                                                                         radial in Acanthocybium (Fig. 43c).
      Species       19   20   21   22   23   24   25   26   N      x
S. brasiliensis                9   38   21                   69   22.2
S. cavalla                     6   27   18                   51   22.2   Postcleithra
S. commerson                  18   52   32    8             110   22.3
S. concolor               8   21    4                        34   20.8
S. guttatus              20   57   11    1                   89   20.9     The posterior projecting plate of the cleithrum
S. koreanus               1    4   13    7    3              28   22.3
S. lineolatus             4    2    6   10    3              25   22.2
                                                                         has its posterior end attached to the first post-
S. maculatus              8   33   14    1                   56   21.1   cleithrum which connects ventrally to the second
S. multiradiatus          1   10   10    6                   27   21.8
S. munroi                      4    4    1                    9   21.7   postcleithrum. The lamellar first postcleithrum
S. niphonius                   9   22    5                   36   21.9   (Fig. 44) is kidney-shaped with a narrow upper
S. plurilineatus               1    9   14    5    3         33   23.1
S. queenslandicus              5   19    5    0    1         30   22.1   end, rounded lower margin, concave anterior bor-
S. regalis                1   17   21    4    1              44   21.7   der and convex posterior margin. In Grammator-
S. semifasciatus                    4   15   13              33   23.3
S. sierra                16   38   17    1    1              73   21.1   cynus (Fig. 44d), the first postcleithrum is very
S. sinensis                    2    8    3                   13   22.1
S. tritor                 3   22   13                        38   21.3
                                                                         wide and short with a notch in the dorsal margin
Acanthocybium                       3    4   17   12    1    37   24.1   instead of a pointed end, width/maximum length
Grammatorcynus                      1    8   13   17    3    42   24.3
                                                                         = 55-62%. It is wider (47-48%) in Acanthocybium
608
COLLETIE and RUSSO: SPANISH MACKERELS
a b
c d
(Fig. 44c) than in the species of Scomberomorus      width of the bone makes the second postcleithrum
(24-41%). Three species of Scomberomorus have        appear much wider in Grammatorcynus, 37-42%
wide first postcleithra (37-41%): commerson, si-     of total length compared with 16-27% in the other
nensis (Fig. 44a), and tritor. Three species have    two genera. The widest second postcleithra in
narrow first postcleithra: koreanus (24-26%, Fig.    Scomberomorus, 22-27% of total length, are in
44b), lineolatus (28-29%), and guttatus (28-31%).    lineolatus, maculatus, plurilineatus, and queens-
The other 12 species have moderately wide first      landicus (Fig. 45a). The narrowest ones are in
postcleithra, 30-39%. Devaraj (1977:48) reported     guttatus and koreanus (15-20%, Fig. 45b), and
long, narrow first postcleithra in the same three    cavalla, sierra, and sinensis (19-20%). Acantho-
species (plus S. maculatus and S. regalis from       cybium (Fig. 45c) and the other nine species of
Mago Leccia's 1958 work) and wider ones in S.        Scomberomorus are intermediate, 20-24%. The
commerson and S. cavalla.                            ascending process appears longer in 6 species of
   The second postcleithrum (Fig. 45) is broad and   Scomberomorus (brasiliensis, cavalla, macula-
lamellar at the upper part with a short pointed      tus, queenslandicus, regalis, and tritor) than in
ascending process and a long styliform descend-      Acanthocybium, Grammatorcynus, and the other
ing process. Grammatorcynus (Fig. 45d) differs       12 species of Scomberomorus.
strikingly from Acanthocybium and Scombero-
 morus in having a sharp process extending anteri-   PELVIC GIRDLE
 orly from the broad lamellar portion of the bone.
 Inclusion of this process in measurements of the      The pelvic fin rays (I, 5) attach directly to the
                                                                                                    609
                                                                                                FISHERY BULLETIN: VOL. 82. NO.4
paired basipterygia which make up the pelvic                         basipterygium is composed of three main parts
girdle. The bones are united along the midline                       (Fig. 46): a wide anterodorsal plate; a thin, flat
and are imbedded in the ventral abdominal wall                       anterior process (anterior xiphoid process of
free from contact with any other bones. Each                         de Sylva 1955, anteromesial process of Devaraj
                                                                     1977); and a strong posterior process (posterior
                                                                     xiphoid process of de Sylva 1955). There are three
                                                                     wings to the anterodorsal plate (Kishinouye
                                                                     1923): lateral (external), mesial (internal), and
                     v~)                                             ventral (vertical). Anteriorly, the lateral wing
                                                                     turns into the same vertical plane and merges
                                                                     into the ventral wing. The mesial wing and the
           c                                                              d
FIGURE 46.-Right basipterygia of the pelvic girdle in mesial view.   a. Scomberomorus regalis, Miami, Fla., 469 mm FL, 1.5x. b.
Scomberomorus lineolatus, Palk Strait, India, 428 mm FL, 2 x . c. Acanthocybium solandri, Miami, Fla., 1,403 mm FL, 1 x. d. Gram-
matorcynus bilineatus, Queensland, 521 mm FL, 1.5 x .
610
COLLETTE and RUSSO: SPANISH MACKERELS
                                                                                                     611
                                                                                         FISHERY BULLETIN: VOL. 82, NO.4
metapterygoid (long, in contact); 9) ventral                  lateral and medial arms of fourth epibranchial
hypohyal at least three times larger than dorsal              less acute (more acute); 8) anterior process of
hypohyal (less than three times larger); 10) fifth            second epibranchial not elongate (elongate); 9)
branchiostegal rayon suture between epihyal                   four or five vertebrae supporting caudal fin rays
and ceratohyal (on epihyal); 11) no shelf present             (three); 10) no anterior process on second post-
between dorsal and ventral arms of posttemporal               cleithrum (prominent spinelike process present);
(shelf present); and 12) epihyal much longer                  11) anterior end of first postcleithrum pointed
than deep, depth 58-62% oflength (depth 66-98%                (notched); 12) .base of third pectoral radial on
of length).                                                   suture between coracoid and scapula (completely
  In three additional characters, Scomberomorus               on coracoid); 13) jaw teeth compressed and tri-
differs from Acanthocybium and Grammator-                     angular (conical); 14) ventral surface of para-
cynus but is closer to the former than the latter:            sphenoid convex (concave); 15) upper margin of
ventral branch of palatine equal to or longer than            dentary longer than lower margin (lower longer);
(87-107%) dorsal branch (slightly shorter, 112-'              and 16) posterior edge of ectopterygoid short,
121%, in Acanthocybium; much shorter, 120-                    41-63% of ventral distance (long, 64-68%).
123%, in Grammatorcynus); supratemporal much
deeper than wide, 49-79% (deeper, 84-93%; wider
than deep, 101-113%); and first postcleithrum                       Scomberomorus brasiliensis Collette,
very narrow, 24-41% of length (narrow, 47-48%;                          Russo, and Zavalla-Camin
wide, 55-62%). Scomberomorus has a deep uro-                             Serra Spanish Mackerel
hyal; it is moderately deep in Grammatorcynus                                         Figure 47
and shallow in Acanthocybium. Scomberomorus
has a moderate to high number of vertebrae (40-               Scomberomorus maculatus. Not of Mitchill
56) compared with other members of the family,                  1815. Ribeiro 1915:134-135 (Brazil). Lowe
more than Grammatorcynus (31), but less than                    1962:679-686 (British Guiana continental
Acanthocybium (62-64).                                          shelf). Cervigon 1966:720-721 (description,
   Scomberomorus and Acanthocybium agree                        fishery; Venezuela), fig. 303. Bastos 1966:
with each other but differ from Grammatorcynus                  113-117 (counts and measurements). Nomura
in a series of16 osteological characters: 1) supra-             1967:29-39 (biology; Ceara,' Brazil). Mota
cleithrum narrow, 42-62% of length (wide, 72-                   Alves and Tome 1968a:25-30 (sexual develop-
75% in Grammatorcynus); 2) pores present on                     ment). Mota Alves and Tome 1968b:139-140
dorsal arm of supratemporal (absent); 3) nasals                 (sperm). Fonteles Filho 1968:133-137 (fishery;
do not protrude far beyond ethmoid region (pro-                 Ceara, Brazil). Nomura and Costa 1968:95-99
trude far beyond); 4) posterior ~nd of dorsal                   (length-weight relationship). Costa and Paiva
margin of urohyal forked (tripartite); 5) glosso-               1969:89-95 (maximum size 125 cm FL; Ceara,
hyal without teeth fused to bone (large tooth                   Brazil). Mota Alves 1969:167-171 (digestive
patch fused to bone); 6) hyomandibula wide, 36-                 tract). *Menezes 1970:171-176 (food). Dahl
52% of length (narrow, 35-36%); 7) angle of                     1971:278-279 (Colombia), photograph. Alcan-
FIGURE 47.-Scomberomorus brasiliensis. Belem market, Brazil, 502 mm FL, USNM 217550, holotype.
612
COLLETTE and RUSSO: SPANISH MACKERELS
  tara Filho 1972a (gill net fishery; Ceara, Bra-                        Diagnosis. -This species possesses nasal denti-
  zil). * Gesteira 1972:117-122 (reproduction and                        cles as do the other five species of the regalis
  fecundity). Menezes 1972:86-88 (number of                              group (concolor, maculatus, regalis, sierra, and
  gill rakers). Bastos et al. 1973 (canning, Bra-                        tritor) , has the artery that branches from the
  zil). Costa and Almeida 1974:115-122 (length                           fourth left epibranchial artery as do all the spe-
  frequencies). Menezes 1976:45-48 (size, sex-                           cies in the group except S. tritor, and shares a
  ratio; NE Brazil). Fonteles-Filho and Alcan-                           specialization of the fourth right epibranchial
  tara-Filho 1977 (gill net mesh selectivity curve;                      artery (Fig. 7f) with S. sierra and S. regalis. In
  Ceara, Brazil). *Sturm 1978:155-172 (biology,                          these three species an artery connects the fourth
  Trinidad). Ximenes 1983 (age and growth;                               right epibranchial with a branch of the coeliaco-
  Ceara, Brazil).                                                        mesenteric artery. Scomberomorus brasiliensis
Scomberomorus brasiliensis Collette, Russo, and                          has shorter pelvic fins than do the other members
  Zavalla-Camin 1978:273-279 (original descrip-                          of the regalis group (Fig. 48), 3.6-5.9% FL com-
  tion; Brazil). Manooch et al. 1978 (annotated                          pared with 4.7-6.4 in S. sierra and 4.4-6.3 in S.
  bibliography). Collette 1979:29 (characters).                          regalis. Together with three other species of the
  Collette and Russo 1979:8-11 (diagnostic char-                         regalis group (concolor, regalis, and sierra), S.
  acters, range). Cressey et al. 1983:264 (host-                         brasiliensis has a long posterior process on the
  parasite list, 4 copepod species). Collette and                        pelvic girdle, 62-90% ofthe length ofthe anterior
  Nauen 1983:60-61 (description, range, fig.).                           plate. Differs from S. sierra by essentially lack-
                                                                         ing pterotic spines. Intercalar spine absent as in
Types.-Holotype: USNM 217550 (502 mm FL);                                the other five species of the regalis group and S.
BeH~m    market; 22 May 1975; B. B. Collette                             niphonius.
1642. D XVIII + 17+ X; A 19+IX; PI 22; RGR I
3 + 1 + 10 = 14; vertebrae 19 + 28 = 47. Paratypes:                      Description. -Lateral line gradually descending
103 specimens (110-630 mm FL) from 54 Brazilian                          to midline on caudal peduncle. Intestine with two
collections (see Collette et al. 1978:276-278).                          folds and three limbs (Fig. 3a). Spines in first
40
         35
                                                                                                          •
                                                                                                 •
  E 30
  E                                                                                        •
 :I:
 G25
 Z
 w
 ..... 20
 Z
 ...     15
 U
 >
 .....
 w 10
 Q..
          5
                                                                                                     o brasiliensis
                                                                                                     • maculatus, sierra,
                                                                                                       tritor, regalis
          0
              0       75          150          225          300          375         450          525          600          675
                                                          FORK       LENGTH         (mm)
FIGURE 48.-Regression of pelvic fin length on fork length in five species of Scomberomorus. The regression line for S. brasiliensis is
significantly different from those for S. maculatus, S. sierra, S. tritor, and S. regalis. The regression lines for the latter four species do
not differ significantly from each other. Therefore, the same symbol is used for plotting specimens of these four species. (From Collette
et al. 1978:fig. 1.)
                                                                                                                                         613
                                                                                                    FISHERY BULLETIN: VOL. 82, NO.4
dorsal fin 17 or 18, rarely 19 (Table 9); second                           ured in Ceara from 1962 to 1966, 9 exceeded 95.0
dorsal fin rays 15-19, usually 17 or 18 (Table 10);                        cm FL, more than 60% each year from 1962 to
finlets 8-10, usually 9 (Table 10); anal fin rays 16-                      1968 were in the size range 40-65 cm (Brazilian
20, usually 17-19 (Table 11); finlets 7-10, usually 9                      records summarized by Collette et al. 1978). Sex-
(Table 11); pectoral fin rays 21-24, usually 22 or                         ual maturity is reached at age III or IV, 46 cm FL
23 (Table 12). For a sample of 90 Brazilian S.                             in Ceara (Gesteira 1972). The shortest mature
brasiliensis, Bastos (1966) found the following                            male in Trinidad was 38 em, the shortest ripe
numbers of fin rays to be most common: dorsal                              female 45 cm (Sturm 1978). The length-weight
spines 18 (86.6%), rays 18 (76.6%), finlets 9                              relationship for the Brazilian population was
(75.3%); anal rays 18 (100%), finlets 9 (79.8%),                           given by Nomura (1967). Males and females grew
pectoral rays 22 (98.9%). Precaudal vertebrae 19-                          at roughly equal rates up to 4 yr of age but then
21, usually 20 (Table 6); caudal vertebrae 27-29,                          females grew faster on to age XIV (Ximenes
usually 28 (Table 7); total vertebrae 47-49, usu-                          1983).
ally 48 (Table 8). The counts of 46 or 47 reported
by Bastos (1966) presumably exclude the hypural                            Color pattern. -Sides with several rows of round
plate which we include in our counts. Gill rakers                          yellowish-bronze (in life) spots (Fig. 47) similar to
on first areh (1-3) + (9-13) = 11-16, usually 2 + (11-                     S. maculatus and S. sierra but without any lines
12) = 13-15 (Table 5). For a large sample from                             or streaks such as are present in S. regalis.
Brazil (225 males, 275 females), Menezes (1972)                            Number of yellowish-bronze spots on sides of
found a similar range, 11-17, and a "typical" count                        body increases with size of fish; young specimens
of 3 + 1 + 11 = 15. Morphometric characters are                            (200 mm) have about 30 spots; adults more, 45
given in Table 13.                                                         spots (422 mm), 47(455), 46(470), 45(516), and
                                                                           58(530) (Collette et al. 1978). Spots arranged in
Size. -Maximum size 125 cm FL (Costa and                                   three or four rows (sometimes in two rows). The
Paiva 1969, Ceara, Brazil). Of 16,170 fish meas-                           rows are not very well defined but it is possible to
                                                                           recognize them. First dorsal fin black in the
                                                                           anterior half (first seven membranes), posterior
   TABLE I3.-Summary of morphometric data of                      Scom-    half white with upper edge black. Pectoral fin
   beromorus brasiliensis.           FL   = fork length,   HL   = head     dusky; pelvic and anal fins white.
   length.                                                                   There is a black and white photograph of a
       Character                      N      Min.   Max.   Mean     SO     specimen from Colombia in Dahl (1971:278) and a
   Fork length                        69     111    710     317     136    drawing of a Venezuelan specimen in Cervig6n
     Snout-A             roo    FL    68     508    692     538     . 24
     Snout-20            roo    FL    68     483    672     511       23
                                                                           (1966:fig. 303).
     Snout-lO            roo    FL    68     196    337     242       20
     Snout-P,            roo    FL    69     217    359     253       22
     Snout-P,            roo    FL    69     191    317     220       20   Biology. -No extensive migrations are known
     P,-P,               roo    FL    68      83    159     108       11   for S. brasiliensis, and it is available to the
     Head length         roo    FL    69     121    309     213       22
     Max. body depth      roo   FL    69     164    263     197       15   fishery in northeastern Brazil all year round.
     Max. body width     roo    FL    67      54    114      81       11   There does appear to be some seasonal movement
     P, length           roo    FL    68      97    143     123        9
     P,length            roo    FL    66      29     59      45        5   around Trinidad (Sturm 1978). There is a spawn-
     P2 insertion-vent   roo    FL    66     234    349     272       18
     P, tip-vent         roo    FL    62     193    298     226       17
                                                                           ing peak in the Gulf of Paria, Venezuela, in
     Base 10             roo    FL    68     232    360     263       18   October-April followed by a postspawning feed-
     Height 20            roo   FL    62      92    139     118       11
     Base 20              roo   FL    69      93    153     118       10   ing migration away from Venezuela with a period
     Height anal          roo   FL    61      83    149     115       12   of maximum abmidance in Trinidad waters May-
     Base anal           roo    FL    68      97    142     113       10
     Snoul (fleshy)       roo   FL    69      69    120      82        8   September. Some spawning takes place in the
     Snout (bony)         roo   FL    65      59    102      73        7   Gulf of Paria throughout the year with a peak
     Maxilla length       roo   FL    68     104    188     124       13
     Postorbital          roo   FL    69      84    127      95        6   in October-April (Sturm 1978). Ripe fish are
     Orbital (fleshy)     roo   FL    69      27     57      37        6
     Orbital (bony)       roo   FL    69      33     77      53        8
                                                                           taken on the Guyana continental shelf in Sep-
     Interorbital         roo   FL    69      48    107      57        7   tember (Lowe 1962). Spawning takes place all
     20-caudal            roo   FL    67     427    594     490       31
   Head length                        69      33    140      66       25   year round off northeastern Brazil with a peak in
     Snout (fleshy)      roo    HL    69     354    596     386       29   the third trimester, July-September (Gesteira
     Snout (bony)        roo    HL    65     300    546     344       31
     Maxilla length      roo    HL    68     541    937     581       47   1972). Spawning probably takes place mostly
     Postorbital         roo    HL    69     387    758     446       43   offshore beyond the main fishing areas. There
     Orbit (fleshy)      roo    HL    69     136    286     175       24
     Orbit (bony)        roo    HL    69     172    408     249       31   appear to be no references to eggs or larvae of S.
     Interorbital        roo    HL    69     240    564     269       44
                                                                           brasiliensis. As with other species in the genus,
614
COLLETIE and RUSSO: SPANISH MACKERELS
food consists largely of fishes with smaller quan-                    Venezuela is S. brasiliensis as is also a large
tities of penaeoid shrimps and loliginid cephalo-                     proportion of the Brazilian catch of Scomberomo-
pods. The most important component of the food                        rus spp. In Trinidad, it is taken by drift gill nets
ofl,020 individuals (17.5-87.5 cm FL) from north-                     that are fished overnight and with beach seines
eastern Brazil was the thread herring, Opistho-                       (Sturm 1978). There are two major fisheries in
nema oglinum, (more than 25%) followed by                             Brazil. One employs gill nets (rede-de-pesca) from
Engraulidae, Carangidae, Hemiramphidae, and                           wooden boats not over 10 m long powered by gaso-
Pomadasyidae (Menezes 1970).                                          line engines (Fonteles Filho 1968; Alcantara Filho
                                                                      1972a). The other method is trolling from rafts
Interest to fisheries. -This is an important food                     (Fonteles Filho 1968; Costa and Almeida 1974).
fish throughout its range-Colombia (Dahl 1971),                       Most of the catch is consumed fresh, but in Brazil
Venezuela (Cervigon 1966), Trinidad (Sturm                            some has been salted (Paiva and Costa 1966) and
1978), the Guianas (Gines and Cervigon 1968),                         some has been canned (Bastos et al. 1973).
and especially in northeastern Brazil. The fish-
ery is concentrated in June-August in Trinidad                         Distribution. -Caribbean and Atlantic coasts of
(Sturm 1978) but is conducted year round in                            Central and South America from Belize at least
northeastern Brazil (Alcantara Filho 1972a). The                       as far south as Lagoa Tramandai, Rio Grande do
fishing grounds are 5-16 mi offshore in Brazil                         SuI, Brazil (Fig. 49). Previously confused with,
(Fonteles Filho 1968; Alcantara Filho 1972a).                          but not known to overlap the range of, S. macula-
Most of the catch previously reported as S. macu-                      tus which occurs in the Gulf of Mexico and along
latus from Fishing Area 31 (Western Central                            the Atlantic coast of the United States. Replaced
Atlantic) for Colombia, Trinidad and Tobago, and                       in the West Indies by S. regalis.
60
          .    i
          .L   I
         oI    I
          i~-cI'~-+--+- +-+--j--+-
          t"
         of---+--f--4-,:-t-
         cif-,-f--+--+-                                        ,J'f--t-+----+-+----+-t--1-+--+-+--+----j40
          ,                                                                          I
          j                                                                 ,        I   tit'
         o ---"----:':-::o---'-------'-~.---'--'---.L._-l-----'--l607.---'---L--'--f·--'--
                                                                                30
                                                                                             ci   -'----'-..-..L--'---"UJ
                                                                                                                            615
                                                                                           FISHERY BULLETIN: VOL. 82. NO.4
Geographic variation. -Morphometric data from                  Cybium acervum Cuvier in Cuvier and Valen-
two populations of S. brasiliensis were compared                 ciennes 1831:186 (original description, Mar-
by ANCOVA: Central America (n = 9-11) and                        tinique, Santo Domingo, Cuba). Poey 1865:
Brazil (n = 39-44). Null hypotheses that the 2                   322 (Cuba; color pattern of juveniles). Poey
sets of regressions are coincident were accepted                 1868:362 (description; Cuba). Poey 1875:147
for 24 of 26 regressions. The two populations were               (after Cuvier in Cuvier and Valenciennes
different in Sn-P2 and 2D-C. Comparison of mer-                  1831). Poey 1878:4 (unable to find this species
istic characters for central and northern South                  in Cuba).
America versus Brazil did not reveal any differ-               ?Cybium clupeoidum Cuvier in Cuvier and Va-
ences (Collette et aI. 1978:tables 1-3).                         lenciennes 1831:178 (original description, "tIe
                                                                 de Norfolk, Nouvelle Hollande").
Material examined. - Total 146 (89-710 mm FL).                 Scomberomorus caballa. Jordan and Gilbert
                                                                 1882:427 (synonymy, range). Goode 1884:316
meas.:      69 (111-710): Belize (2); Honduras (1);              (range, size), pI. 94.
            Costa Rica (3); Panama (5); Colombia               Scomberomorus cavalla. Meek and Newland
            (1); Venezuela (3); Trinidad (2); Guyana             1884:233, 235 (description, synonymy, range).
            (2); Surinam (4); French Guiana (2);                 Dresslar and Fesler 1889:442 (in key), 444-445
            Brazil (44, *S. brasiliensis).                       (synonymy, range), pI. 11 (specimen from
counts:     146.                                                 Woods Hole). Jordan and Evermann 1896b:
diss.:      6 (363-639): French Guiana (2); Belem,               875-876 (description, synonymy). Evermann
            Brazil (4).                                          and Marsh 1902:124 (description, synonymy;
                                                                 Puerto Rico). Jordan and Evermann 1902:
                                                                 287-288 (description, range), photograph.
          Scomberomorus cavalla (Cuvier)                         Bean 1903:400-401 (synonymy, description,
                    King Mackerel                                range). Fowler 1905:766-767 (placed in new
                        Figure 50                                subgenus Sierra; description, Santo Domingo
                                                                 and St. Martins). Smith 1907:193-194 (diag-
Guarapucu. Marcgrave 1648:178 (Brazil).                          nosis, range; few or no records from North
Cybium cavalla Cuvier 1829:200 (original de-                     Carolina). Sumner et aI. 1913:750 (references,
 scription after Marcgrave's Guarapucu; Brazil).                 occurrence; Menemsha Bight and Quisset Har-
Cybium caballa. Cuvier in Cuvier and Valen-                      bor, Mass.). Ribeiro 1915:135-136 (description;
 ciennes 1831:187-190 (description; Brazil, West                 range S to Angra dos Reis, Brazil). Meek and
 Indies). Gunther 1860:373 (synonymy, de-                        Hildebrand 1923:322-323 (description, synon-
 scription; West Indies). Poey 1865:322 (Bra-                    ymy). Schroeder 1924:7 (maximum weight 75
 zil, Puerto Rico; C. caballa is the juvenile of                 lb; Fla. Keys), fig. 5. Nichols and Breder 1927:
  C. acervum). Poey 1875:147 (description;                       124 (description, range), fig. 172. Nichols
 Cuba). Poey 1878:3-4 (synonymy, charact~rs).                    1929:230-231 (range, description), fig. 84. Bee-
Cybium immaculatum Cuvier in Cuvier and Va-                      be and Hollister 1935:213 (Union I., Grena-
  lenciennes 1831:191 (original description, no                  dines). Baughman 1941:16-17 (Texas records).
  locality). Gunther 1860:370. Poey 1878:5                       Munro 1943:69, 71-72 (placed in subgenus Sier-
  (after Cuvier).                                                ra). La Monte 1945:26 (description, range),
FIGURE 50.-Scomberomoru8 cavalla. Woods Hole, Mass., 1,000 mm FL, USNM 19418. (From Goode 1884:pl. 94.)
616
COLLE'ITE and RUSSO: SPANISH MACKERELS
  color pI. 11. Breder 1948:127 (range), fig. Erd-         velopment, pigmentation, counts, and measure-
  man 1949:301 (West Indies). Fraser-Brunner               ments; 49 larvae and juveniles (3.3-31.0 mm
  1950:160-161 (range), fig. 33. Baughman 1950:            SL), figs. 4, 5, 6B (larvae and juveniles, 3.3-23
  243-244 (previous Texas records). Knapp                . mm SL». Dahl 1971:277 (uncommon in Co-
  1950:141-142 (food in Texas, shrimps, squids,            lombia), fig. Ivo 1972:27-29 (gonadal stages of
  fishes). Rivas 1951:224-225 (synonymy, diag-             4,346 females; Ceara, Brazil). Moe 1972:16-17
  nosis, range). Taylor 1951:270 (popular an-              (migrations; Florida). Alcantara Filho 1972b
  glers' fish taken by trolling; North Carolina).          (gill net and trolling fisheries; NE Brazil).
  La Monte 1952:50 (description, range). Bige-             Richards and Klawe 1972:13 (range), 89 (refer-
  low and Schroeder 1953:349 (description, range;          ence to Wollam 1970). Miyake and Hayasi
  Gulf of Maine record, N Truro, Cape Cod), fig.           1972:111:3 (in key), IV:11 (common names).
  184. Pew 1954:26 (description, range, habits),           Dwinell and Futch 1973 (139 larvae and juve-
  fig. 22. Mather 1954:292 (13 specimens, about            niles, 2.8-13.5 mm SL, all months; NE Gulf of
  70 cm FL, in trap; Quisset, Mass.). Mather               Mexico). Bastos et aI. 1973 (canning; NE Bra-
  and Gibbs 1957:243 (9 specimens, 600-700 mm              zil). *Beaumariage 1973 (age, growth, food,
  FL; Buzzards Bay, Mass.). Briggs 1958:287                reproduction; Florida). Ivo 1974 (fecundity;
  (range). *Mago Leccia 1958 (osteology, com-              Ceara, Brazil). Berrien and Finan 1977a (spe-
  parisons with S. maculatus and S. regalis),              cies synopsis). Erdmann 1977:150 (in spawn-
  figs. Butz and Mansueti 1962:130-135 (de-                ing condition mainly in July and Aug.; NE
  scription; N Chesapeake Bay; comparison with             Caribbean). Klawe 1977:2 (common name,
  specimens from Mass. and Fla.), fig. 2 (head).           range). DeVane 1978 (stomach contents;
  Moe 1963:108-109 (most sought fish in Fla.               North Carolina). Fritzsche 1978:121-125 (de-
  charter boat fishery). Collette 1966:365-367             scription, larval development), figs. 66-69 (lar-
  (types of C. aeervum and C. immaculatum;                 vae). Collette 1978: Scombm 4 (description,
  both names synonyms of S. cavalla). Nomura               range), figs. Manooch et aI. 1978 (annotated
  and Costa 1966:11-13 (length-weight of666 spec-          bibliography). Lima and Oliveira 1978:6, 23
  imens; Ceara, Brazil). Cervigon 1966:718-719             (common name "cavalla" in Brazil). Collette
   (description; Venezuela). Randall 1967:753-             1979:29 (characters, range). Collette and
   754 (food of 22 West Indian specimens, 92.3%            Russo 1979:9 (diagnostic characters, range).
   fishes). Nomura and Rodriguez 1967:79-85                Manooch 1979 (commercial U.S. catches aver-
   (age and growth, condition factor, 1,504 speci-         aged 2,541 t/yr over last 17 yr, recreational
  mens, 30-120 em FL; Ceara, Brazil), fig. 1               catch statistics are inadequate). Meaburn
   (sagitta). Mota Alves and Tome 1967a:103-               1979 (heavy metal contamination). McEach-
  108 (anatomy and histology of the digestive              ran et aI. 1980 (larvae off Texas coast). Fisch-
   tract), figs. 1, 2 (arrangement of viscera), figs.      er 1980:1-21 (size, length-weight, sex ratio;
   3-7 (histology of gut). Mota Alves and Tome             Louisiana). Sutherland and Fable 1980 (an-
   1967b:1-9 (histology of gonads), figs. 1-11 (photo-     nual migration from S Florida N to NE Gulf
   micrographs). Mota Alves and Tome 1967c:                of Mexico and W to S Texas in the spring).
   173-175 (anatomy and histology of the liver and         MacGregor et aI. 1981 (significant correlation
   gall bladder). Mota Alves and Tome 1968c:               found between gonadosomatic indices and se-
   31-32 (sperm). Fonteles Filho 1968 (fishery;            rum estrogens in females and with serum an-
   NE Brazil). Nomura and Costa 1968:95-99                  drogens in males). Fable et aI. 1981 (tempera-
   (length-weight relationship, 104 males and 90            ture effects on catches; NW Florida). Lubbock
   females; Ceara, Brazil). Randall 1968:119 (de-           and Edwards 1981:150 (Saint Paul's Rocks).
   scription, range, habits), fig. 136. Lyles 1969:         Richardson and McEachran 1981 (larvae 2.0-
   16-21 (summary of U.S. landings, 1880-1967).             2.9 mm SL, pigment characters, measurements;
   Menezes 1969a:15-20 (food of 798 specimens;              Gulf of Mexico), fig. 2A (2.3 mm larva). Naugh-
   Ceara, Brazil; fishes compose main diet).                ton and Saloman 1981 (stomach contents of 139
   Menezes 1969b:175-178 (meristic characters,             juveniles, 103-309 mm FL; Cape Canaveral,
   osteology; NE Brazil). Mota Alves and Tome               Fla.; diet mainly clupeoids). Sacchi et aI.
   1970:181-184 (histology and enzymes of pylor-            1981:3 (French Antilles). Trent et al. 1981
   ic caeca). Beardsley and Richards 1970:5                 (size composition and sex ratio; SE U.S.).
   (length-weight o£197 specimens, 585-1,500 mm             Ximenes et aI. 1981 (age and growth; NE Bra-
   FL, 1.47-32.09 kg; Florida). Wollam 1970 (de-            zil). Morgan and King 1983 (tooth replace-
                                                                                                        617
                                                                                FISHERY BULLETIN: VOL. 82, NO.4
  ment). Johnson et aI. 1983 (age, growth, and         curve in the lateral line under the first dorsal fin
  mortality; SE U.s.). Cressey et aI. 1983:264         but the lateral line gradually descends in the
  (host-parasite list, 4 copepod species). Col-        other 15 species. Scomberomorus caualla differs
  lette and Nauen 1983:61-62 (description, range),     from S. commerson in having fewer vertebrae
  fig. Saloman and Naughton 1983a (food in             (41-43, usually 42 or fewer compared with 42-46,
  SE U.S.).                                            usually 43 or more) and more gill rakers (7-13,
                                                       usually 8 or more compared with 1-8, usually 7
Types of nominal species. -Cybium caualla Cu-          or fewer). Ventral process of angular moderate,
vier, 1829 is based on Marcgrave's description         87-93% of dorsal process as in S. sinensis. Ascend-
and figure (1648:179) of the "Guarapucu"; there        ing process of premaxilla short as in S. gutta-
are no extant types for this name.                     tus. Anterior ends ofpterosphenoid close together
   Cybium aceruum Cuvier in Cuvier and Valen-          as in S. commerson. Intercalar spine well devel-
ciennes, 1831. Lectotype: MNHN A.5781; Santo           oped as in S. commerson and S. queenslandi-
Domingo; Ricord; 130 mm FL; selected by Collette       cus.
(1966:365); D XV + 17 + VIII; A 18+ VIII; RGR 1
1 + 1 + 7 = 9; vertebrae 17 + 25 = 42; upper jaw       Description. -Intestine with two folds and three
teeth 8-11; lower jaw teeth 7-8. Paralectotypes:       limbs (Fig. 3b). Spines in first dorsal fin 12-18,
MNHN B.2508, out of A.5781; Santo Domingo;             usually 15 (Table 9); second dorsal fin rays 15-18,
Ricord; 2(133-138 mm FL). A photograph of one          usually 17 or 18 (Table 10); dorsal finlets 7-10,
of the syntypes was published by Blanc and             usually 9 (Table 10); anal fin rays 16-20, usually
Bauchot (1964: pI. 1, fig. 1, upper fig.).             18 or 19 (Table 11); anal finlets 7-10, usually 8
   Cybium immaculatum Cuvier in Cuvier and             (Table 11); pectoral fin rays 21-23, usually 22 or
Valenciennes, 1831. Lectotype: MNHN A.5720;            23 (Table 12). Precaudal vertebrae 16 or 17, usu-
Martinique; Plee; 157 mm FL; selected by Col-          ally 17 (Table 6); caudal vertebrae 24-26, usually
lette (1966:366); D XV + 17 + IX; A 17 + IX; P 1 23;   25 (Table 7); total vertebrae 41-43, usually 42
RGR 1 1 + 1 + 7 = 9; vertebrae 17 + 25 = 42; upper     (Table 8). Gill rakers on first arch (1-2) + (6-11) =
jaw teeth 9-11; lower jaw teeth 9-12. Paralecto-       7-13, usually 1 + (8-9) = 9-10 (Table 5). Counts for
types: MNHN B.2509; out of A.5720; Martinique;         a large Brazilian sample (353 individuals, Me-
Plee; 147 mm FL; and MNHN A.5780; Martin-              nezes 1969b), were (0-2) + 1 + (5-9) = 6-11, usually
ique; Plee; 164 mm FL. Photographs of two of           1 + 1 + 7 = 9. Morphometric characters are given
the syntypes were published by Blanc and Bau-          in Table 14.
chot (1964:pI. 2, fig. 12).
   Cybium clupeoidum Cuvier in Cuvier and Va-          Size. -Maximum size 172.5 em FL (female, 37.2
lenciennes,1831. Holotype: MNHN A.5784; "lIe           kg; Beaumariage 1973); common to 70 em. The
de Norfolk, a l'oeust de la Nouvelle-Hollande";        all-tackle angling record is a 40.8 kg fish taken
Broussonet collection; 302 mm FL; D XV + 17 +          off Key West, Fla., in 1976. In Florida, females
IX; A 18 + VIII; RGR 1 1 + 1 + 7 = 9; vertebrae 17 +   usually mature in their fourth summer at a mean
25 = 42; upper jaw teeth 13-13; lower jaw teeth 11-    length of 83.7 em, males in the third summer at
12. A photograph of the type was published by          73 em (Beaumariage 1973). In Brazil, females
Blanc and Bauchot (1964:pI. 1, fig. 3). The high       mature at age V-VI, about 77 em according to Ivo
gill raker count and low vertebral number show         (1972), at age IV and 63 em according to Gesteira
the type to be a specimen of the western Atlantic      and Mesquita (1976). Males and females grow at
S. caualla as supposed by Bauchot and Blanc            roughly equal rates up to age V but then females
(1961) and Blanc and Bauchot (1964) rather than        grow faster (Ximenes et aI. 1981). They reach an
S. commerson as presumed by Collette (1966)            age of at least XIV (Ximenes et aI. 1981; Johnson
based on geography. The locality has been sup-         et aI. 1983). Length-weight relationships have
ported by Bauchot (1969), but the data or the          been published for Brazil (Nomura and Costa
specimen must have been mixed with the western         1968; Ximenes et aI. 1981), Florida (Beaumariage
Atlantic species sometime in the past.                 1973), and Louisiana (Fischer 1980).
Diagnosis. -This species shares with S. commer-        Color pattern. -Adults have plain silvery sides
son an abrupt downward curve in the lateral line       without bars or spots, juveniles have bronze spots
under the second dorsal fin (Fig. 50). Scomber-        smaller than the pupil of the eye in five or six
omorus sinensis also has an abrupt downward            irregular rows (Randall 1968:119). Adults have no
618
COLLETIE and RUSSO: SPANISH MACKERELS
            TABLE 14.-Summary of morphometric data of                Scomberomorus cavalla.      FL   = fork length, HL = head length.
                                        Unit.,p States                  West Indies               South America                       Total
    Character                   N    Mi".   Max. Mean SO        N    Min. Max. Mean SO      N    Min. Max. Mean SO        N    Min.   Max. Mean SO
Fork length                     10   560 1,160      769   179   20   126   710 323    209   23   147    860   326   183   54   126 1,160      405   257
  Snout-A             %<   FL   10   510   562      535    15   20   519   582 547     23   23   463    568   533    21   54   463   582      539    21
  Snout-20            r.   FL   10   474   521      499    14   20   486   534 512     12   23   430    524   504    18   54   430   534      505    16
  Snout-1D            %<   FL   10   225   266      241    11   20   247   297 268     13   23   210    273   256    15   54   210   297      258    16
  Snout-P,            r.   FL    8   223   260      236    11   20   239   290 268     14   23   205    293   256    21   52   205   293      257    20
  Snout-P,            %<   FL   10   199   241      212    12   20   212   260 243     14   23   194    252   231    14   54   194   260      232    17
  P,-P,               %<   FL    5    86   103       93     7   13    91   136 107     15   22    73    135   107    15   41    73   136      105    15
  Head length         %<   FL   10   192   229      203    10   20   206   250 231     13   23   177    246   224    17   54   177   250      223    17
  Max. body depth     %<   FL    7   149   173      159    10   10   153   258 198     37   22   147    237   197    25   40   147   258      190    30
  Max. body width     %<   FL    8    95   109      102     5   11    78   101   89     9   21    70    126    85    13   41    70   126       89    12
  P, length           r.   FL   10   114   138      124     7   15   108   143 129     12   23   111    142   130     7   49   108   143      129     9
  P,length            r.   FL   10    53    62       58     3   12    54    95   68    10   21    36     85    66    12   44    36    95      64     11
  P2 insertion-vent   r.   FL    8   264   294      281     9   15   245   309 277     17   22   211    298   266    18   46   211   309      272    18
  P, tip-vent         %<   FL    8   205   237      222    11   12   187   236 214     14   21   162    289   208    26   42   162   289      212    21
  Base 10             %<   FL    9   221   255      242    11   19   224   267 246     11   23   207    269   247    14   52   207   269      245    13
  Height 20           r.   FL    9    85   108       95     7   14    76   127 108     13   20    79    128   114    12   44    76   128      108    13
  Base 20             %<   FL   10    78   103       93     7   14    82   124 105     12   23    81    135   112    15   48    78   135      106    14
  Height anal         r.   FL    8    89   102       95     5   11    81   122 107     12   17    89    127   110     9   37    81   127      105    11
  Base anal           %<   FL   10    87   111       98     9   17    92   123 107     10   23    83    129   112    12   51    83   129      108    12
  Snout (fleshy)      %<   FL   10    74   103       84     8   17    83    98   89     4   23    72     92    86     5   51    72   103       87     8
  Snout (bony)        %<   FL   10    68    96       78     8   17    73    86   81     4   22    68     85    78     4   50    68    96       79     5
  Maxilla length      r.   FL   10   108   137      117     8   20   120   152 138      9   23   103    147   132    11   54   103   152      132    12
  Postorbital         r.   FL    7    86    99       92     4   17    89   112   99     6   23    81    104    98     6   48    81   112       98     6
  Orbital (fleshy)    r.   FL   10    24    43       30     5   17    33    58   41     8   23    27     54    39     6   51    24    58       38     7
  Orbital (bony)      r.   FL   10    28    48       41     6   17    42    73   55    10   23    38     65    52     6   51    28    73       51     9
  Interorbital        %<   FL   10    52    68       55     4   20    56    66   62     3   23    48     66    60     5   54    48    68       60     4
  20-caudal           %<   FL    7   485   527      506    13   13   452   500 473     14   23   445    516   472    18   44   445   527      477    20
Head length                     10   112   266      158    45   20    32   151   72    44   24    36    152    73    35   55    32   266       88    51
  Snout (fleshy)      r.   HL   10   362   451      415    25   17   350   424 391     25   24   354    422   384    17   52   350   451      392    24
  Snout (bony)        %<   HL   10   355   417      384    20   17   305   388 353     27   23   318    388   351    19   51   305   417      358    26
  Maxilla length      %<   HL   10   546   604      576    18   20   577   613 '598    10   24   570    609   590    10   55   546   613      591    14
  Postorbital         %<   HL    7   428   485      453    22   17   408   463 434     16   24   395    463   437    16   49   395   485      439    18
  Orbit (fleshy)      r.   HL   10   123   210      147    24   17   152   233 176     24   24   147    220   171    18   52   123   233      168    24
  Orbit (bony)        %<   HL   10   138   238      204    28   17   191   305 237     31   24   201    265   231    15   52   138   305      229    27
  Interorbital        %<   HL   10   256   295      272    11   20   248   284 267     10   24   254    281   269     7   55   248   295      269     9
black area in the anterior part of the first dorsal                             San Blas in May (Sutherland and Fable 1980).
fin as do many species of Scomberomorus.                                        The main run usually arrives in Panama City,
   Black and white photographs are given by                                     Fla., in late Mayor early June. The westward
Jordan and Evermann (1902) and Randall (1968:                                   migration along the northern Gulf of Mexico ends
fig. 136). The drawing published by Goode (1884:                                off west Texas in June-July (Sutherland and
pI. 94) is'included here as Figure 50,                                          Fable 1980). Return migration in the fall from
                                                                                summer feeding grounds in the northwest Gulf to
Biology. -A summary of biological information                                   winter feeding grounds off southern Florida has
has been presented by Berrien and Finan (1977a)                                 been confirmed by recaptured tagged fish (Suth-
and there is also a useful annotated bibliography                               erland and Fable 1980), Based on gonad develop-
by Manooch et aI. (1978). King mackerel appear                                  ment and larval distribution, spawning takes
to be present all year in Louisiana (Fischer 1980)                              place in the northeastern Gulf of Mexico and in
and in the state of Ceara in northeastern Brazil.                               the Atlantic offshore of Cape Kennedy, Fla., and
Some populations appear to be resident in south                                 northward in late summer (Moe 1972). According
Florida waters as they are available to the recre-                              to Beaumariage (1973), spawning in Florida may
ational fishery throughout the year. However,                                   be protracted as indicated by successive increase
the large schools that are found in south Florida                               in vitellogenic oocyte size during the summer.
waters during January and February move north                                   Spawning takes place in May-September in the
along both coasts in the spring (Moe 1972).                                     western Gulf of Mexico, especially in September
Schools that occur offshore of Palm Beach and                                   in waters 35-183 m deep over the middle and
Martin Counties on the east coast of Florida in                                 outer continental shelf (McEachran et al. 1980).
winter and early spring move north. They appear                                 In the northeastern Caribbean, spawning peaked
off North Carolina in April and remain until fall                               in July and August (Erdman 1977). Spawning is
(DeVane 1978). On the west coast of Florida, king                               year round offshore of Ceara, northeastern Brazil
mackerel move north to the Naples-Ft. Myers or                                  (Ivo 1972). Larvae and juveniles (139 specimens,
St. Petersburg-Tampa areas by April and Cape                                    2.8-28.8 mm SL) were taken off the northwest
                                                                                                                                                    619
                                                                              FISHERY BULLETIN: VOL. 82, NO.4
coast of Florida from June to October with larvae    coast of northeastern Brazil where they are taken
< 3.1 mm taken in June, August, and September        all year (Nomura and Rodrigues 1967). The main
(Dwinell and Futch 1973). Most of these larvae       fishing grounds in northeastern Brazil are 6-16
and juveniles were taken in surface plankton         nmi from the coastline (Fonteles Filho 1968). An
tows at surface temperatures of 26.3°-31.0°C and     historical summary of the fishery in the United
salinities of 26.92-35.0%•. Larvae were taken in     States has been presented by Lyles (1969). Com-
increasing numbers from May to September (35%        mercial catches in the United States have aver-
or more of larvae in September of each year) in      aged 2,541 t a year with a value of $1.3 million
the western Gulf of Mexico, particularly over the    over 17 yr with a peak in 1974 of 4,764 t (Manooch
middle and outer continental shelf (McEachran        1979). The bulk of these landings were made in
et al. 1980). Larvae and juveniles have been         Florida by hook and line and gill net fisheries
described and illustrated by Wollam (1970; 3         (Manooch 1979). Data on the large recreational
figures, 3.3-23 mm SL), Fritzsche (1978; 12 fig-     catch are inadequate. The catch reported from
ures, 2.98-17 mm), and Richardson and McEach-        Fishing Area 31 (Western Central Atlantic) to-
ran (1981, 2.3 mm SL). As with other members of      talled 7,122 t in 1982 (FAO 1984) but is higher
the genus, food consists primarily of fishes with    than this because much of the catch of 1,105 tons
smaller quantities ofpenaeoid shrimps and squids     of unclassified Scomberomorus species is S. ca-
(Knapp 1950, Texas; Randall 1967, Caribbean;         valla (or S. regalis). It is fished for with hook and
Menezes 1969a, northeastern Brazil; Beaumar-         line in all the southeastern United States (Trent
iage 1973, Florida; DeVane 1978, North Carolina;     et al. 1981). In addition, there is a commercial
Saloman and Naughton 1983a, United States).          fishery using snapper hooks and line in Missis-
Clupeids such as Opisthonema, Harengula, Sar-        sippi, a commercial gill net fishery in southern
dinella, and Brevoortia are particularly impor-      Florida, and commercial hook and line fisheries
tant (Randall 1967; Menezes 1969a; Beaumariage       in North Carolina and southern Florida (Trent et
1973; DeVane 1978; Saloman and Naughton              al. 1981). The gill net fishery has employed power
1983a), even in juveniles 103-309 mm FL (Naugh-      block retrieval since 1963 and aerial spotting is
ton and Saloman 1981). Other fishes commonly         sometimes used (Beaumariage 1973). The king
consumed include Carangidae (particularly De-        mackerel is the staple of the charter boat indus-
capterus), Lutjanidae, Pomadasyidae, and Hemi-       try in Florida and is the most sought fish by
ramphidae (Randall 1967; Menezes 1969a; Beau-        private boats (Moe 1963). In Florida it is most
mariage 1973; Saloman and Naughton 1983a).           often fished at the surface with trolled lure or
                                                     small bait fish (Moe 1963). It is less commonly
Interest to fisheries. -The king mackerel is an      caught than is S. brasiliensis across the northern
important species for recreational, commercial,      coast of South America (Dahl 1971; Cervigon
or artisanal fisheries throughout its range from     1966; Gines and Cervigon 1968). Both gill nets
southeastern United States to northeastern Bra-      and trolling are used in northeastern Bra~il, the
zil. North of southern Florida, the fishery is       former catching 87.6% II-IV yr fish and the lat-
concentrated in the summer months. In North          ter 78.2% IV-VI yr fishes (Alcantara Filho
Carolina, sport fisning is carried out from April    1972b). The Brazilian fishery is also carried out
to December (DeVane 1978) but is concentrated        from rafts with hooks baited with thread herring
in spring and fall (Taylor 1951). In the Panama      (Fonteles Filho 1968). Most of the catch is pro-
City area ofthe Florida panhandle, fish are taken    cessed into steaks or sold fresh (Lyles 1969), but
from April to November and are most often            it has been canned (Bastos et al. 1973) and
caught in August and September (Fable et al.         salted (Paiva and Costa 1966) in northeastern
1981). From December to March the fishery along      Brazil.
the east coast of Florida is concentrated from
Jupiter Inlet to Palm Beach Inlet, the rest of the   Distribution. - Western Atlantic Ocean from
year the fishery is further north from Ft. Pierce    Massachusetts to Rio de Janeiro, Brazil (Fig. 51).
to Sebastian Inlet (Beaumariage 1973). There is a    There are several summer records from the south-
winter commercial fishery in the Florida Keys        ern side of Cape Cod (Dresslar and Fesler 1889;
(Beaumariage 1973). King mackerel are taken all      Sumner et al. 1913; Mather 1954; Mather and
year in Louisiana with a maximum in November-        Gibbs 1957) but only one stray is known to have
January (Fischer 1980). King mackerel is the         moved around to the north side of Cape Cod, to
main species of commercial interest along the        North Truro in the Gulf of Maine (Bigelow and
620
FIGURE 51.-Ranges of Scomberomorus cavalla, S. commerson, and S. sinensis.
                                                                                      FISHERY BULLETIN: VOL. 82, NO.4
FIGURE 52.-Scomberomorus commerson. Queensland, 968 mm FL. (From Munro 1943:pl. 6B.)
622
COLLETIE and RUSSO: SPANISH MACKERELS
  Ragay Gulf, Luzon, Philippine Is.). Domantay          Herre 1953:245-246 (synonymy; Philippine rec-
  1940:379 (important species; Margosatubig,            ords). Ommanney 1953:66 (off Marie Louise
  Zamboanga, Philippine Is.). Chevey and Du-            I., S Amirante Is.). Devanesen and Chidam-
  rand 1945:27 (description, food fish; Indochina),     baram 1953:32-36 (names, description, fishery,
  fig. Chacko 1949:89 (stomach contents of 12           economic importance), fig. 34. Tham 1953:49
  specimens, 21-43 cm FL; Gulf of Mannar, India;        (Singapore Straits). Fowler 1959:167 (descrip-
  mostly clupeoids such as Stolephorus and Dus-         tion, synonymy, locality records; Suva, Fiji),
  sumiera). Chacko 1950:171 (characters of eggs         583 (additional references). Jones et al. 1960:
  and larvae; Krusadai I., Gulf of Mannar, India).      136 (Andaman-Nicobar Is. waters). Jones
  Mori 1952:136 (Fusan, Korea; listed). La              1962:113-117 (larvae and juveniles; S Kerala,
  Monte 1952:51 (description, range), color pI. 19.     India), figs. 9-14 (postlarvae and juveniles 14.4-
  Gopalan Nayar 1958:49-51 (fishery; Vizhing-           278 mm). Bauchot and Blanc 1961:370 (de-
  am, S India). Munro 1958b:262-263 (many               scription of "neosyntypes"). Kaikini 1961:357
  records; New Guinea region). Fourmanoir               (largest species in the seerfish fishery at Mal-
  and Crosnier 1964:386-387 (found along the            wan, India, reaching 17.24 kg). Venkatara-
  entire coast of Madagascar; one of most impor-        man 1961:292 (teleosts in stomachs of 2 speci-
  tant food fishes; occasional in lagoon at May-        mens; Calicut, India). Kumaran 1964:586-587
  otte, Comores Is.). Chacko et aI. 1967:1007-          (stomach contents 283 specimens, 17-225 mm
  1008 (drift net fishery; Madras State).               FL; Vizhingam, W coast of India; 79% small
Cybium Konam Bleeker 1851a:357 (original de-            fishes, 43% Anchoviella). Baissac 1964:186
  scription, Batavia). Bleeker 1852:39-40 (de-          (now scarce in Mascarene waters). Boeseman
  scription; Batavia). Bleeker 1853:42 (Coro-           1964:467 (types of C. konam = S. commer-
  mandel, India; East Indies). Kner 1865:144            sonii), pI. 4, fig. 16 (lectotype of S. ko-
  (description; Manila).                                nam). Blanc and Bauchot 1964:444-445 Cneo-
Scomberomorus commerson(i)(ii). Jordan and              syntypes" of C. commersonii), pI. 1-2, figs.
  Seale 1906:228 (New Guinea, East Indies;              4-7. Gorbunova 1965a:53 (spawning sea-
  listed). Jordan and Seale 1907:13 (description;       son). George and Athanassiou 1965:1-4 (St.
  Cavite, Luzon, Philippine Is.). Jordan and            George Bay, Lebanon; first Mediterranean rec-
  Dickerson 1908:610 (Suva market; Fiji). Fowl-         ords; description), fig. 1 (49.0 and 60.3 cm TL
  er 1918:63 (Philippine Is.; listed). Whitley          specimens). Collette 1966:369 (Bauchot and
  1927:5 (Fiji; listed). Herre 1931:33 (Philippine      Blanc's "neosyntypes" invalid). Kamohara
  localities). Whitley 1932:289 (Snapper I.,            1967:44 (description; Japan), color pI. 22, fig.
  Great Barrier Reef). Herre 1933:7 (Dumagu-            4. George and Athanassiou 1967:238 (listed
  ete, Philippine Is.; listed). Hardenberg 1936:        among species entering the Mediterranean
  252 (mouth of Kapuas R., W Borneo). *Munro            through the Suez Canal). Anonymous 1967:46
  1942:33-48 (spawning, eggs, early larvae; N           (off NW coast of Borneo). Mauge 1967:120
  Queensland), pIs. 2-4, figs. 1-17 (eggs and early     (listed from Smith's Fishes of South Africa).
  larvae). *Munro 1943:67, 71-72 (placed in sub-        Arnoult and Fourmanoir 1967:134, 139 (juve-
  genus Cybium), 74-82 (description, anatomy,           niles in mangrove swamp; Nossi-Be, Madagas-
  synonymy, occurrence in Australia); pI. 6, fig.       car). Ben-Tuvia 1968:35 (commercially impor-
  B (968 mm FI specimen; Queensland); fig. 2.4          tant fish; several caught trolling in Dahlak
  (viscera); pI. 8, fig. 3 (368 mm FL immature          Archipelago; many from coast of Ethiopia, com-
  specimen; N Queensland). Chapman 1946:169             mon in Eilat). Ben-Yami 1968:37 (caught by
   (off New Caledonia). Herre and Urnali 1948           trolling and purse seine; Ethiopia). Wongra-
  (common names in several languages and dia-           tana 1968 (trawl survey; Thailand). Silas
   lects; Philippine Is.). Barnard 1948:380 (49-        1967:1096 (leaping out of the water; Gulf of
  in, 24-lb specimen; False Bay, South Africa).         Mannar), 1,113-1,115 (length-weight). Merce-
  Norman and Fraser 1949:153-154 (range).               ron 1970:72-81 (length-weight, maturity, food
  Fraser-Brunner 1950:161 (synonymy, range),            mostly anchovies, movements; Cambodia).
  fig. 34. Umali 1950:9 (found throughout the           *Tongyai 1970 (distribution, peak fishing
   Philippines in open sea, bays, and gulfs).           months, migrations, food, fishery; Thailand).
   Warfel and Manacop 1950:42 (in otter-trawl           Collette 1970:3, 5 (Mediterranean coast of Is-
   catches; Philippine Is.). Warfel 1950:2 (regu-       rael). *Prado 1970:91-116 (synonymy; descrip-
   larly found in fresh fish market, Philippine Is.).   tion; biology, length-frequency, food, sex ratio,
                                                                                                      623
                                                                              FISHERY BULLETIN: VOL. 82, NO.4
Description. -Intestine with two folds and three                                    Color pattern. -Munro (1943:75) presented a
limbs (Fig. 3c). Spines in first dorsal fin 15-18,                                  good description of Australian specimens. Sides
usually 17 (Table 9); second dorsal fin rays 15-                                    pale silver gray marked with transverse vertical
20, usually 17 or 18 (Table 10); dorsal finlets                                     bars of a darker gray. Bars narrow and slightly
8-11, usually 9 or 10 (Table 10); anal fin rays 16-                                 wavy, sometimes breaking up into spots ventral-
21, usually 18 or 19 (Table 11); anal finlets 7-12,                                 ly. Bars number 40-50 in adults but are usually
usually 9 or 10 (Table 11); pectoral fin rays 21-24,                                fewer than 20 in juveniles up to 450 mm FL.
usually 22 or 23 (Table 12). Precaudal vertebrae                                    Munro reported the cranial regions and upper
19 or 20, usually 20 (Table 6); caudal verte-                                       regions of the back to be mottled with iridescent
brae 23-27, usually 24 or 25 (Table 7); total                                       blue and green. Cheeks, lower jaw, and belly
vertebrae 42-46, usually 44 or 45 (Table 8). Gill                                   silvery white. First dorsal fin bright blue rapidly
rakers on first arch (0-2) + (1-8) = 1-8, usually                                   fading to blackish blue. Pectoral fin light grey
(0-1)+ (3-4)= 3-5 (Table 5). Morphometric char-                                     turning to blackish blue. Caudal fin lobes, second
acters given in Table 15.                                                           dorsal, anal, and dorsal and anal finlets pale
                                                                                    grayish white turning to dark gray. Juveniles
                                                                                    have the anterior membranes of the first dorsal
Size. -Maximum size 230 cm FL and 59 kg;                                            jet black contrasting with pure white posteriorly
commonly 60-120 cm (Lewis 1981). The all-tackle                                     (Munro 1943:pl. 8, fig. 3).
angling record is a 44.9 kg fish taken at Scott-                                       There is an excellent illustration of an adult S.
burgh, Natal, South Africa, in 1982. Sexual ma-                                     commerson from Japan in Kishinouye (1923:pl.
turity is attained at a length of 70-80 cm FL in                                    22), of an adult (968 mm FL, here reproduced as
Madagascar (Prado 1970), Papua New Guinea                                           Figure 52), and a juvenile (368 mm) from Austra-
(Lewis et al. 1974), and Fiji (Lewis et al. 1983),                                  lia in Munro (1943), and of an adult from India in
but not until 90-100 cm in South Africa (van der                                    Jones and Silas (1962:fig. 2). There are color
Elst 1981). Females attain larger sizes than males                                  paintings in La Monte (1952:pl. 19) and Grant
(Prado 1970; Lewis et al. 1974, 1983).                                              (1982:627) and color photographs of a specimen
TABLE I5.-Summary of morphometric data of Scomberomorus commerson. FL = fork length, HL = head length.
                                                                                                                                                           625
                                                                               FISHERY BULLETIN: VOL. 82, NO.4
from Kuwait in Kuronuma and Abe (1972:pl. 17),         Merceron 1970). Other food items mentioned by
a Japanese specimen in Masuda et al. (1975:79),        these authors include small carangids, Leiogna-
a Persian Gulf specimen in Randall et al. (1978:       thus, squids such as Loligo, and penaeoid
212), a South African specimen in van der Elst         shrimps. Feeding apparently takes place day and
(1981:274), a Queensland specimen in Grant             night (Tongyai 1970).
(1982:pl. 325), and a 344 mm specimen from the
South China Sea in Kyushin et al. (1982:248).          Interest to fisheries. - This species is taken
                                                       throughout its range by commercial, artisanal,
Biology. -Adults frequently undertake lengthy          and recreational fisheries. Although it may be
seasonal longshore migrations (Lewis 1981). Mi-        present the year round, e.g., in the coastal water
grations occur along the entire eastern coast of       of Madras State (Chacko et al. 1967), fisheries are
Queensland (McPherson 1981). Tongyai (1970:fig.        usually concentrated in some seasons, particu-
4) has mapped the migration route in the Gulf of       larly those with the best weather conditions for
Thailand; from the Cambodian border in October         fishing. Peak fishing seasons in' some areas are
to the northernmost part of the Gulf of Thailand       as follows: Taiwan-spring (Kishinouye 1923);
in December to February, then south along the          Great Barrier Reef-August to September (Grant
west coast of the gulf in April. At least some         1978); Cambodia-the dry season, October to
individuals are present year round in some areas,      April (Merceron 1970); Gulf of Thailand-Octo-
e.g., Cambodia (Merceron 1970) and East Africa         ber to May (Tongyai 1970); Waltair, northeastern
(Williams 1964). Spawning apparently occurs            India-March-April, June-July, and December
over a long period in some regions, e.g., October      (Venkata Subba Rao et al. 1981); Vizhingam,
to July in East Africa (Williams 1964), July to        southeastern India-September to April (Gopa-
December in Papua New Guinea (Lewis et al.             Ian Nayar 1958); and Malwan, south of Bombay
1974). Spawning times have been reported as            -February to March and October to December
spring in Taiwan (Kishinouye 1923), October-           (Kaikini 1961). There are important fisheries in
December on the Great Barrier Reef (Munro              Fishing Areas 51, 57, and 71. The total catch
1942), October to February, peaking in December        fluctuated between 63,290 and 79,047 t/yr in
and January in Fiji (Lewis et al. 1983), May           1979-82 (FAO 1984). The five countries with the
to July in the coastal waters of Madras State          largest reported catch in this period were Indo-
(Chacko et al. 1967), and December-February in         nesia, Philippines, Sri Lanka, Yemen, and Paki-
Madagascar (Fourmanoir and Crosnier 1964).             stan. The landings in Queensland were around
Munro (1942) described and illustrated the devel-      1,000 tons/yr during the mid-1970's but have
opment of artificially fertilized eggs and early       dropped to 730-770 tons in 1978-80 (McPherson
larvae from the Great Barrier Reef. Jones (1962)       1981). The 1982 catch in Fiji probably exceeded
described and illustrated five postlarvae and ju-      300 tons (Lewis et al. 1983). There is also an
veniles (14.4-54.4 mm) from Vizhingam along the        important drift net fishery in India, but the catch
coast of southern Kerala taken in shore seines         is not identified to species in the statistics. Drift
from February to June. The most complete larval        nets (gill nets) that are usually fished over night
description is by Jenkins et al. (1984) of 62 larvae   appear to be the most important gear used for
(3.5-9.3 mm SL) from the shelf waters of the           S. commerson in Thailand, Malaysia, and India
Barrier Reef. Tongyai (1970) reported that juve-       (Tongyai 1970; Pathansali 1968; Kaikini 1961;
niles 100-450 mm were taken in waters of high          Chacko et al. 1967, respectively); other gear in-
turbidity and salinity in the Gulf of Thailand.        cludes shore seines in Taiwan and India (Kishi-
Juveniles were caught with dip nets in Papua           nouye 1923; Gopalan Nayar 1958), trolling lines
New Guinea waters in July, October, November,          in Taiwan, Malaysia, India, and East Africa
and December (Lewis et al. 1974). Like other           (Kishinouye 1923; Pathansali 1968; Dhawan et
species of the genus, S. commerson feeds primar-       al. 1972; Williams 1964, respectively). Hand lines
ily on small fishes particularly anchovies such as     (bett-tok) baited with mackerel (Rastrelliger)
Anchoviella and Stolephorus and clupeids such          or squid (Loligo) and trotlines (bett-Iaak) with
as Sardinella (South Africa-van der Elst 1981;         spoons are also employed in the Gulf of Thailand
Madagascar-Prado 1970; Madras-Chacko et                (Tongyai 1970). It is taken fairly commonly in the
al. 1967; Waltair, east coast of India-Rao 1964;       inshore fishery along the Mediterranean coast of
Vizhingam, southern India-Kumaran 1964;                Israel with trammel nets and occasionally with
 Gulf of Manaar-Chacko 1949; and Cambodia-             purse seines (A. Ben-Tuvia 3 ). The yearly catch
626
COLLETIE and RUSSO: SPANISH MACKERELS
will be about 20 t out of the 2,000 t taken in                    Andamans and Nicobars (Jones et al. 1960), Lac-
the inshore fisheries according to A. Ben-Tuvia                   cadives (Nagabhushanam and Chandrasekhara
and D. Golani.4 It is a highly regarded species                   Rao 1972), Amirantes (Ommanney 1953), Com-
that commands a good price in the Philippine                      ores and Madagascar (Fourmanoir and Crosnier
Islands, Thailand, India, Madagascar, and East                    1964), and Mauritius (Bleeker 1874; Baissac
Africa (Warfel 1950; Tongyai 1971b; Devanesen                     1976). It has strayed into the South Atlantic
and Chidambaram 1953; Fourmanoir and Cros-                        because we have examined the head of a speci-
nier 1964; Williams 1964, respectively). It is a                  men (BMNH 1965.12.1.104) collected by Arthur
prime target of the Natal ski-boat fishermen and                  Loveridge from Egg Island, St. Helena. It has
is pursued by sport and commercial anglers in                     even traversed the Suez Canal and entered the
South Africa, using lures, feathers, clupeids, and                eastern Mediterranean Sea where it is now
anchovies as bait (van der Elst 1981). It is mar-                 known from Lebanon (George and Athanassiou
keted fresh, on ice, or salted and dried (Gopalan                 1965) and Israel (Collette 1970; USNM 226334;
Nayar 1958; Fourmanoir and Crosnier 1964; Wil-                    Golani and Kredo 1981).
liams 1964; Tongyai 1971b; McPherson 1981). A
lipid-soluble toxin similar to ciguatoxin has been  Geographic variation. -Samples were adequate
found in the flesh of S. commerson between lat.     to compare the morphometric data of three popu-
24 Sand 26 S along the east coast of Queensland
  0           0
                                                    lations of S: commerson by ANCOVA (Table 15):
(Lewis and Endean 1983). From 1976 to 1980, at      Red Sea (n = 12), Indian Ocean (n = 31-34), and
least 38 toxic S. commerson, resulting in 217       East Indies (n = 21-22). Null hypotheses that the
poisonings, came from this area.                    three sets of regressions are coincident were
                                                    accepted for 11 of 26 regressions, rejected for the
Distribution. -Widespread throughout the Indo-      other 15. For one set, interorbital width, the
West Pacific from South Africa and the Red Sea      regressions for all three populations differed sig-
east through the Indo-Australian Archipelago to     nificantly in slope. The Red Sea population dif-
Australia and Fiji and north to Hong Kong,          fers significantly from the Indian Ocean popula-
Formosa, and Japan (Fig. 51). The northernmost      tion in six regressions: Sn-1D, Sn-PI , Ht 2D, Base
record is from the northern coast of Yamaguchi      2D, Ht A, and interorbital width. The Indian
Prefecture, southern Honshu, on the Sea of Japan    Ocean population differs from the East Indies
(Kishinouye 1923:417). Its range extends farther    population in eight regressions: P r P 2 , Hd L, P 2
out into the Pacific islands than any of the other  tip-vent, Ht 2D, Sn (fleshy), Sn (bony), maxilla L,
species of Scomberomorus, throughout the Phil-      and interorbital width.
ippine Islands, to New Caledonia (Chapman 1946;        There are also geographic differences in meris-
Fourmanoir and Laboute 1976; Uchida 1978) and       tic characters. Populations in the Red Sea and
Fiji (Jordan and Dickerson 1908; Whitley 1927;      Persian Gulf tend to have fewer vertebrae (23-24
Fowler 1959). Records from Wallis and Futuna        caudal, 43 total) and fewer rays in the second
Islands and Cook Islands (Uchida 1978) are doubt-   dorsal and anal fins (usually 16-17 second dorsal
ful and need to be verified. In Australia the range and 17-18 anal) than other populations (24-27
extends south to Sydney (Castelnau 1879; AMS        caudal, 44-46 total vertebrae; 17-18 second dorsal,
1.9693) and, rarely, even to Victoria and Tas-      18-19 anal rays). Populations in the East Indies
mania (Munro 1958a; Whitley 1964a) on the east '. and Gulf of Thailand tend to have more vertebrae
coast and to Rottnest Island off Perth, Western     (25-27 caudal, 45-46 total) and anal finlets (mode
Australia (Hutchins 1979). From Australia and       10 rather than 9). Gill rakers tend to be fewer in
the East Indies, the range extends along the coast  the East Indies, Gulf of Thailand, and South
of the Indian Ocean including the Persian Gulf       China Sea (2-6, usually 3 or 4) compared with
and Red Sea to False Bay, Cape Town, South           other populations (3-8, usually 4-6).
Africa (Barnard 1948). The range includes many
major offshore island groups in the Indian Ocean:    Material examined. -Total 262 (94.2-1,155).
          nam Bleeker), New Guinea (2); Austra-               SL; from Gulf of California; measurements).
          lia (5); Philippine Is. (6); South China            Croker 1937:245-246 (Long Beach). Walford
          Sea (8); Fiji (5).                                  1937:25-26 (description, occurrence). Roedel
counts:   262.                                                1939:341 (Long Beach; fifth record of recent
diss.:    14 (260-1,155): Israel (1); W Indian                years). Munro 1943:69, 71-72 (placed in sub-
          Ocean (2); Pakistan (1); New Guinea (2);            genus Chriomitra). Fowler 1944:498 (listed;
          New South Wales, Australia (2); Phil-               Mexico; Panama Bay record probably S. sier-
          ippine Islands (2); Hong Kong (4).                  ra). Fitch 1948:134 (Santa Monica Bay; sixth
                                                              specimen since 1880's). *Fitch and Flechsig
                                                              1949:275-280 (history of previous captures; de-
      Scomberomorus concolor (Lockington)                     scription), fig. 75. Fraser-Brunner 1950:157-
          Monterey Spanish Mackerel                           158 (description), fig. 26. Clothier 1950:53
                     Figure 53                                (47-48 vertebrae). Fitch 1950:70 (Newport
                                                              Harbor; seventh California record since 1880's;
Chriomitra concolor Lockington 1879a:134-136                  comparison with S. sierra). Roedel 1951:510
  (original description; Monterey Bay, Calif.).               (Long Beach; 8th to 10th specimens since
  Lockington 1879b:34 (uncommon; San Francis-                 1880's; may have spots). Fitch 1952:560 (Los
  co market).                                                 Angeles Harbor). Roedel 1953:85 (occasional
Scomberomorus concolor. Jordan and Gilbert                    in S California). Radovich 1961:21, 30 (years
  1881a:456 (Monterey Bay; Chriomitra placed in               of California captures). Collette et al. 1963:54
  synonymy of Scomberomorus). Jordan and                      (compared with S. sierra; previous California
  Jouy 1881:13 (specimens from Soquel, Calif.;                records of S. sierra = S. concolor). Clemens
  USNM 27205; distributed as duplicates). Jor-                and Nowell 1963:260 (Gulf of California).
  dan and Gilbert 1881b:45 (Monterey Bay). Jor-               Fitch and Craig 1964:202, fig. 5 (otolith).
  dan and Gilbert 1882:425-426 (description).                 Klawe 1966:445 (compared with S. sierra; more
  Meek and Newland 1884:232-233 (synonymy,                    gill rakers on upper and lower arches). Fitch
  description). Goode 1884:316 (Soquel, Monte-                1969:65 (jaw fragments and teeth; Chumash
  rey Bay; occurrence, price). Dresslar and Fes-              Indian village archaeological site; Ventura,
  ler 1889:442-443 (synonymy, description). J or-             Calif.). Castro-Aguirre et al. 1970:156-157
  dan and Evermann 1896a:341 (listed). Jordan                 (abundant in Gulf of California). Fitch and
  and Evermann 1896b:873-874 (description, syn-               Lavenberg 1971:131, 168 (listed). Miller and
  onymy). Jordan and Evermann 1902:284 (de-                   Lea 1972:192 (description; range Gulf of Cali-
  scription). Starks 1918:121 (not reported from              fornia to Soquel, Calif.), fig. Buen 1972:291
  Monterey Bay in 40 yr). Meek and Hildebrand                 (Mexico). Bullis et al. 1972:75 (bionumeric
  1923:325-326 (description; Soquel, Calif.). Jor-            code number). Richards and Klawe 1972:13
  dan et al. 1930:257 (listed). Phillips 1932:99              (range), 91 (references to juveniles). Magnu-
  (Monterey Bay; first record in more than 40 yr).             son 1973:350 (short pectoral fin). Sharp 1973:
  Breder 1936:12 (2 specimens, 491-520 mm                     384, fig. 3 (hemoglobin electrophoretic patterns
628
COLLETTE and RUSSO: SPANISH MACKERELS
  of S. sierra, S. concolor, and Acanthocybium         usually 28 (Table 7); total vertebrae 46-48, usu-
  identical or very similar). Johnson 1975:20          ally 47 or 48 (Table 8). Gill rakers on first arch (4-
  (procurrent spur not present). Shiino 1976:          8) + (15-21)= 21-27, usually (6-7) + (17-18) = 23-25
  231 (common name). Thomson and McKibbin              (Table 5). Morphometric characters given in Ta-
  1976:46 (description; Gulf of California).           ble 16.
  Klawe 1977:2 (common name, range). Fitch
  and Schultz 1978:85, fig. 4G (otolith). Horn
                                                          TABLE 16.-Summary of morphometric data of         Scom-
  and Allen 1978:39 (range lat. 36°N to 32°N
                                                          beromorus concolor.         FL = fork length, HL = head
  along California coast). Collette 1979:29               length.
  (characters, range). Collette and Russo 1979:               Character                   N    Min.   Max.   Mean   SO
  13 (diagnostic characters, range). Cressey et           Fork length                     34   134    685    401    139
  al. 1983:264 (host-parasite list, 3 copepod spe-          Snout-A             %,   FL   34   504    547    524     10
  cies). Collette and Nauen 1983:64-65 (descrip-            Snout-20            r.   FL   34   488    534    506     12
                                                            Snout-lO            %,   FL   34   220    258    236     10
  tion, range), fig.                                        Snout-P,            %,   FL   34   192    287    242     18
                                                            Snout-P,            %,   FL   34   124    263    209     21
                                                            P,-P,               %,   FL   30    89    116    100       6
Types. -Chriomitra concolor Lockington 1879a.               Head length         r.   FL   34   185    230    202     10
                                                            Max. body depth     %,   FL   29   164    220    187     16
Description based on a 21-in FL (533 mm FL)                 Max. body width     %,   FL   32    70    111      89    10
specimen obtained in the San Francisco market               P, length           %,   FL   34   116    137    125       6
                                                            P,length            r.   FL   31    41     61      50      4
and probably originating in Monterey Bay. Lock-             P2 insertion-vent   %,   FL   32   222    294    261     16
ington stated that the specimen was "in the                 P, tip-vent         r.   FL   29   173    248    212     18
                                                            Base 10             r.   FL   34   210    292    254     15
possession of the Cal. Acad. of Sciences", but it is        Height 20           r.   FL   26    98    129    111       9
                                                            Base 20             %,   FL   33   108    153    128     10
not now present in the CAS collection. Data from            Height anal         r.   FL   25    26    137    108     20
the original description are "D XV + 17 + VII; A            Base anal           %,   FL   33   107    171    135     14
                                                            Snout (fleshy)      r.   FL   33    53     83      72      5
18 + VIII. Body color dark steel blue above, be-            Snout (bony)        %,   FL   33    57     76      64      3
coming silvery below; no streaks".                          Maxilla length      %,   FL   33   103    128    113       6
                                                            Postorbital         %,   FL   29    85    101      96      4
                                                            Orbital (fleshy)    r.   FL   33    25     47      32      7
                                                            Orbital (bony)      %,   FL   30    34     63      46      8
Diagnosis. -The species of Scomberomorus with               Interorbital        r.   FL   34    44     55      49      3
the most gill rakers, a total of 21-27 on the first         20-caudal           r.   FL   30   413    524    484     24
                                                          Head length                     34    31    134      80    27
arch, compared with 1-18 in the other 17 species.           Snout (fleshy)      %,   HL   33   276    389    353     19
It possesses nasal denticles as do the other five           Snout (bony)        r.   HL   33   273    355    314     16
                                                            Maxilla length      %,   HL   33   532    575    555     11
species of the regalis group (brasiliensis, macu-           Postorbital         r.   HL   29   419    524    475     22
                                                            Orbit (fleshy)      %,   HL   33   125    212     158    26
latus, regalis, sierra, and tritor). Like S. macu-          Orbit (bony)        %,   HL   30   175    285    226     32
latus, S. concolor lacks the artery that goes from          Interorbital        %,   HL   34   220    274    242      12
the fourth right epibranchial artery to the coeli-
aco-mesenteric artery (Fig. 7d), but it has the
artery that comes off the fourth left epibranchial     Size. -Maximum size 76.2 cm FL, 2.3-3.6 kg
artery as do all the species in the group except S.    (Goode 1884).
tritor. Together with three other species of the
 regalis group (brasiliensis, regalis, and sierra),    Color pattern. -According to Walford (1937),
S. concolor has a long posterior process on the        males are steel blue on the back, silvery on the
pelvic girdle, 62-90% of the length ofthe anterior     sides and below, and are without streaks or spots..
plate. Intercalar spine absent as in the other five    Females are darker, with two alternate series of
species of the regalis group and S. niphonius.         brown spots on sides. The spots on the sides of the
                                                       females are gold in life (Fitch and Flechsig 1949).
Description. -Lateral line gradually descending           A black and white photograph of S. concolor is
to midline on caudal peduncle. Intestine with two      included in Fitch and Flechsig (1949:fig. 75).
folds and three limbs (Fig. 3d). Spines in first
dorsal fin 15-18, usually 17 (Table 9); second         Biology. -Little is known about the biology of S.
dorsal fin rays 16-20, usually 18 or 19 (Table 10);    concolor. In the 1880's, they appeared in Monte-
dorsal finlets 6-9, usually 8 (Table 10); anal fin     rey Bay in September and disappeared in Novem-
rays 19-23, usually 20 (Table 11); anal finlets 6-8,   ber (Goode 1884). There are no references to eggs,
usually 7 or 8 (Table 11); pectoral fin rays 19-22,    larvae, or juveniles (Richards and Klawe 1972).
usually 21 (Table 12). Precaudal vertebrae 18-20,
usually 19 (Table 6); caudal vertebrae 27-29,          Interest to fisheries. -Some accounts indicate
                                                                                                                           629
                                                                                      FISHERY BULLETIN: VOL. 82, NO.4
that S. concalor was of considerable commercial             description based on the wingeram of Russell
importance in Monterey Bay in the 1870's and                1803:pI. 134).
1880's, in great demand and at a high price, 30-50         Cybium guttatum. Cuvier 1829:200 (listed in
cents a pound according to Goode (1884). Accord-            footnote from Sc. guttatus Bloch and Schnei-
ing to other authors, such as Lockington (1879a,            der). Cuvier in Cuvier and Valenciennes
b), it was not abundant even then. No longer of             1831:173-176 (description). Richardson 1846:
any commercial significance.                                268 (synonymy, range). Cantor 1849:1093-
                                                            1095 (synonymy, description, range; Pinang).
Distribution. -An eastern Pacific endemic origi-            Bleeker 1852:38, 39 (synonymy, description;
nally described from Monterey Bay, Calif. (Lock-            East Indies). Bleeker 1853:42 (India). Bleek-
ington 1897a). This apparently was the northern             er 1860:13 (Borneo). Gunther 1860:371 (syn-
limit of the range, and there have been only                onymy, description). Bleeker 1861a:52 (Singa-
about 10 recent records from the California coast           pore; listed). Bleeker 1861b:74 (Pinang; listed).
(Long Beach, Santa Monica Bay, Newport Har-                 Kner 1865:143-144 (description). Day 1873:
bor; Fitch and Flechsig 1949; Radovich 1961). Its           225 (description, range). Bleeker 1873:131
present range is concentrated in the Gulf of                (China; listed). Day 1878:255 (synonymy, de-
California (Castro-Aguirre et aI. 1970; Miller and          scription, range), pI. 55, fig. 1 (young), pI.
Lea 1972; Collette and Russo 1979:13, fig. 8).              56, fig. 4 (adult). Tirant 1885:46 (Cambodia;
                                                            listed). Kishinouye 1923:419-420 (description,
Material examined. - Total 34 (134-685 mm FL).              anatomy), pI. 34, fig. 61 (adult). Chabanaud
                                                            1926:22 (Cote d'Annam, Tonkin; listed). Har-
meas.:    34 (134-685): Soquel, Calif. (6); Gulf of         denberg 1931:141 (Sumatra). Delsman 1931:
          California (27).                                   402 (vertebrae 20 + 25 = 45), figs. 1-9 (eggs
counts:   30.                                                and larvae). Morice 1953:37 (villiform tongue
diss.:    6 (420-495): Gulf of Calif.                       teeth present). Gopalan Nayar 1958:49-51
                                                             (fishery; Vizhingam, S India).
                                                           Cybium interruptum Cuvier in Cuvier and Va-
            S comberomorus guttatus                          lenciennes 1831:172-173 (original description;
            (Bloch and Schneider)                            Pondichery, India). Gunther 1860:371 (de-
          Indo- Pacific King Mackerel                        scription after Cuvier). Day 1873:225 (de-
                     Figure 54                              scription, range). Day 1878:254-255 (syn-
                                                             onymy, description), pI. 56, fig. 3.
Scomber guttatus Bloch and Schneider 1801:23-              Cybium Kuhlii Cuvier in Cuvier and Valencien-
  24 (original description; Tranquebar, India),              nes 1831:178-179 (original description; Bom-
  pI. 5.                                                     bay). Hardenberg 1931:140 (often found in
Scomber wingeram Russell 1803:26-27 (descrip-                river mouths; Sumatra). Delsman 1931:402
  tion; Corornandel coast of India), pI. 134.                (vertebrae 20+ 25= 45), 407 (commonest spe-
Scomber leopardus Shaw 1803:591-592 (original                cies of Cybium at Bagan Si Api Api).
FIGURE 54.-Scomberomorus guttatus. Gulf of Thailand, 459 mm FL, CAS GVF Reg. 1512.
630
COLLETTE and RUSSO: SPANISH MACKERELS
Cybium Croockewitii Bleeker 1851b:161 (original         inate in food of juveniles and adults; Waltair
  description; Banka). Bleeker 1852:37-38 (de-          coast, India). Gorbunova 1965a:52-53 (spawn-
  scription). Gunther 1860:372 (description             ing). Gorbunova 1965b:174-175 (spawning;
  after Bleeker).                                       Gulf of Tonkin), fig. 6 (4.3 and 5.8 mm larvae).
Scomberomorus guttatus. Fowler 1905:766 (Su-            Menon 1966:396 (Tranquebar, India). Thiem-
  matra; ANSP 27490-91). Jordan and Richard-             medh 1966:129, 140 (Thai names). Tongyai
  son 1909:177 (Formosa; FMNH 59284). Reeves            1966a:7-13 (synonymy, occurrence in Thailand,
  1927:8 (Swatow, China). Fowler 1928:109               biology), pi. 2C. Tongyai 1966b:3-17 (length
  (Bombay). Chevey 1934:45-46 (Tirant's C.              frequency; Andaman Sea). Collette 1966:368-
  guttatum = S. guttatus). Delsman and Har-             369 (Cybium kuhlii a junior synonym of S.
  denberg 1934:341-342 (description; East In-           guttatus, lectotype of C. kuhlii s~lected). Jones
  dies), fig. 247 (adult), fig. 248 (larva, with        1968:998 (seerfish fishery; India). Pathansali
  myomeres 15+ 35= 50). Hardenberg 1934:.               1968:1001-1002 (fishery on east and west coasts
  311 (Sumatra; listed). Hardenberg 1936:252            of Malaya). Tongyai 1970:559 (distribution;
  (mouth of Kapuas R., Borneo). Hardenberg              Thai waters), 561 (spawning), 561-562 (food).
  1937:12 (mouth of Kumai R., Borneo). Herre            Merceron 1970:75-81 (length-weight; Cambo-
  and Myers 1937:21 (Singapore). Munro 1943:            dia). Tongyai 1971a:13-16 (description), pi. I
  68, 71 (placed in subgenus Indocybium).               (viscera), pi. IV (photograph). Tongyai 1971b:
  Quraishi 1945:28 (pyloric caeca arranged in           3 (undetermined economic potential; Thailand),
  dendritic pattern). Norman and Fraser 1949:           pi. 8,13 (photographs). Latiff1971:92 (descrip-
  153 (Indo-Pacific species). Fraser-Brunner            tion; Penang waters; photograph). Banerjee
  1950:160 (synonymy in part, range), fig. 31.          and Chakrubarty 1972 (drift gill netting; Lower
  Tham 1950:21 (feeds largely on Stolephorus).          Sundarbans, W Bengal). Fernando 1972:524,
  de Beaufort 1951:232-234 (synonymy, descrip-          530 (incidental catches in trawls; Wadge Bank,
  tion, range). Tham 1953:49 (Singapore Straits),       Ceylon). Kuronuma and Abe 1972:105 (de-
  50 (correlation of catch with physical factors        scription; Kuwait), color pi. 17. Richards and
  and presence of food fishes such as Stolepho-         Klawe 1972:13-14 (range), 91-92 (references to
  rus). Vijayaraghavan 1955:360-372 (com-               eggs, larvae, and juveniles). Magnuson 1973:
  monest species of genus in Madras; eggs, larval       350 (small pectoral fin). Banerji 1973:129-130
  development). Krishnamoorthi 1957:236 (sec-           (seerfish fishery; India). Orsi 1974:175 (listed;
  ond in importance among fishes landed at Ra-          Vietnam). Roy and Roy 1974:44, 51, 53 (a
  meswaram I., Palk Bay), 239-242 (catch), 251          principal species in gill net fishery; Balashore,
  (value of catch). Krishnamoorthi 1958:270-            India). Shenoy and James 1974 (ice storage).
  281 (spawning season and fisheries; Rame-              Devaraj 1976:80-85 (distinguished from S.
  swaram I., SE India). Venkataraman 1961:              koreanus), fig. 4 (vertebrae), 5 (preopercle and
  287, fig. 4C (food of 133 specimens; Calicut,         liver). Rao 1976:63-78 (biometric compari-
  India; mostly teleosts). Kaikini 1961:361             son of 5 Indian populations). Shiino 1976:
  (seerfish fishery; Malwan, India). Jones and           231 (common names). *Devaraj 1977 (oste-
  Silas 1962:195-197 (synonymy, description,            ology). Rao and Ganapati 1977:107-111 (com-
  range), fig. 3 (533 mm adult), fig. 5D (head, not      parison with postlarvae and juveniles of S.
  5C as labelled), fig. 6C (gill arch), fig. 7C         lineolatus and S. commerson). Klawe 1977:2
  (caudal peduncle keels). Jones 1962:107-113            (common name, range). Randall et ai. 1978:
   (development, 14.8-239 mm), figs. 2-6 (speci-         167 (Persian Gulf; photograph). Collette 1979:
  mens 14.8, 22.9, 41.2, 66.8, and 239 mm long).         29 (characters, range). Collette and Russo
   Misra 1962:295-296 (description, distribution),       1979:13 (diagnostic characters, range). Zhang
  fig. 181 (size given as "1828 mm"). Jones and          and Zhang 1981:104 (range in part). Naka-
   Kumaran 1964:344-346 (larval development),            mura and Nakamura 1982:446 (3 specimens,
  figs. 1-3 (from Jones 1962). Kumaran 1964:             description; Sea of Japan), fig. 1B. * Devaraj
  587-589 (postlarval and juvenile fishes form           1982 (age and growth). Sivasubramaniam
  most of diet of juveniles; W coast of India).          and Mohamed 1982:64 (Qatar, Persian Gulf).
   Blanc and Bauchot 1964:449 (specimens exam-           Cressey et al. 1983:264 (host-parasite list,
   ined by Cuvier). Boeseman 1964:468 (syn-              4 copepod species). Lee and Yang 1983:230-
   types of C. kuhlii), pi. V, fig. 18 (photograph of    231 (Taiwan), fig. 21 (353 mm FL). Collette
   syntype). Rao 1964:592-597 (teleosts predom-          and Nauen 1983:65-66 (description, range), fig.
                                                                                                     631
                                                                                FISHERY BULLETIN: VOL. 82, NO.4
described fresh specimens taken in Wakasa Bay             Thailand might be deduced from seasonal changes
in the Sea of Japan. Body greyish blue dorsally,          in peak fishing months along the coast of Thai-
silvery white laterally and ventrally. Several            land. These peaks are November-December in
longitudinal rows of small brownish spots scat-           eastern Thailand, late December-January in the
tered rather densely along lateral median line.           northern part of the Gulf, and January-March in
First dorsal fin membrane black. Pectoral, second         the western part of the Gulf (Tongyai 1970).
dorsal, and caudal fins dark brown. Pelvic and            Based on occurrence of ripe females and size of
anal fins silvery white.                                  maturing eggs, spawning probably occurs from
   There are good illustrations of a specimen from        April to July around Rameswaram Island be-
the North Pacific in Kishinouye (1923:fig. 61) and        tween India and Sri Lanka (Krishnamoorthi
of one from India in Jones and Silas (1962:fig. 3).       1958). Ripe females 32.5-46.5 cm FL were taken
There are photographs of specimens of S. gut-             in Thai waters in May. Larvae and juveniles have
tatus from India in Jones and Silas (1964:pI. 7)          been reported from Indonesian and Indian waters
and Silas (1964:pI. 2), and there is a good photo-        but apparently the only certain accounts are
graph of a specimen from the Sea of Japan in              those of Jones (1962) and Jones and Kumaran
Nakamura and Nakamura (1982:fig. lB). A good              (1964) who illustrated four postlarvae (14.8, 22.9,
color photograph of a specimen from the Persian           41.2, and 66.8 mm). As with other species of
Gulf is included in Kuronuma and Abe (1972:               Scomberomorus, the food is primarily fishes. Ju-
pI. 17).                                                  veniles in India feed mainly on teleosts, particu-
                                                          larly clupeoids such as Anchoviella (Venkata-
Biology. -Little is reported in the literature            raman 1961; Kumaran 1964; Rao 1964). Adults
about movements and migration of S. guttatus              also feed mainly on teleosts with small quantities
but it appears to be less migratory than S.               of crustaceans and squids (Thailand - Tongyai
commerson. Possible movements in the Gulf of              1970, India-Rao 1964). Anchovies are particu-
90
S. koreanus
--+-+-rl'--+---+-+---+--f-"i,--+--I20
o' o
~_hrt- -'h--+-+--+-"-420
                                                 \:"         r.
                                                   S. queenslandicus                       FIGURE 55.-Ranges of five
                                                                                           Indo-West Pacific species of
                                                                                           Scomberomorus: S. guttatus,
                                                                                           S. koreanus, S. semifascia-
                                                                                           tus, S. queenslandicus, and
                 60'        90'                    150·            180·      150.   6      S. multiradiatus.
634
COLLETTE and RUSSO: SPANISH MACKERELS
larly important: Stolephorus in Singapore Straits       Amoy (BMNH 1860.7.20.110), and Swatow, China
(Tham 1950, 1953) and Anchoviella in Waltair,           (Reeves 1927). There are many records and speci-
India (Rao 1964).                                       mens from Indochina, the Gulf of Thailand, and
                                                        the East Indies. There are records and specimens
Interest to fisheries. -There are commercial or         of S. guttatus from Borneo (Bleeker 1860; Har-
artisanal fisheries for S. guttatus in Cambodia         denberg 1936; Herre and Herald 1951; ANSP
(Merceron 1970), Thailand (Tongyai 1971b), Ma-          72282) and Makassar, Celebes (RMNH 24096).
laysia (Pathansali 1968), and India, particularly       The range extends further out in the East Indies
in the lower Sundarbans, West Bengal (Banerjee          than that of either S.lineolatus or S. koreanus, at
and Chakrubarty 1972), the Ball;l.shore coast (Roy      least to Bali. The report of S. guttatus from
and Roy 1974), around Madras (Vijayaraghavan            Western Australia (McKay 1970) is based on a
1955), the Gulf of Mannar-Palk Bay area (Krish-         specimen (HUMZ F-423) of S. queenslandicus.
namoorthi 1957), and Malwan, south of Bombay            Earlier reports of S. guttatus from Australia
(Kaikini 1961). It is caught all year round in some     (Macleay 1881; Stead 1906, 1908; Rendahl 1923)
areas (Cambodia-Merceron 1970; Ramaswaram               are also based on S. queenslandicus (Munro 1943:
1., India-Krishnamoorthi 1957) but there are            86). Early reports from New Zealand are based on
peaks of abundance that differ from region to           "a damaged specimen of a Cybium, probably
region. It is taken in the non-monsoon months           C. guttatum, was obtained at the Chatham
(September-May) along the Balashore coast south         Islands...." (Hutton 1895). This report has led to
of Calcutta with the catch increasing from Octo-        subsequent records (Hutton 19Q4; Phillipps 1927;
ber to February (Roy and Roy 1974). Catches peak        Whitley 1968). We concur with Whitley's conclu-
in September-October, December-February, and            sion that this record is "very doubtful". The range
May in Waltair near Vishakhapatnam further              extends west into the Persian Gulf (Kuronuma
south along the west coast of the Bay of Bengal         and Abe 1972; ZMK 3-4).
(Venkata Subba Rao et al. 1981). The season
extends from September-October to March-April           Geographic variation. -Morphometric data for
in Vizhingam, southern India, (Gopalan Nayar            five populations of S. guttatus were compared
1958) with the peak catches usually in September        with ANCOVA (Table 17): Arabian Sea (n = 7-
or October. It is one ofthe principal species in the    13), Bay of Bengal (n = 5-9), East Indies (n = 14-
drift net seerfish fishery in India, but the catch      24), Gulf of Thailand (n = 10-17), and China (n =
is not identified to species in the statistics. Indo-   22-31). Null hypotheses that the 5 sets of regres-
nesia reported the only catch identified as S.          sion lines are coincident were accepted for 18 sets,
guttatus (4,254-5,249 t/yr) in 1979-82 (FAO 1984).      rejected for 8 sets: Sn-lD, Sn-P1 , Head L, maxi-
The primary gear in most areas appears to be the        mum depth, maxilla L, orbit (fleshy), interorbit,
drift gill net which is set overnight, but it is also   and 2D-C. The five populations were arranged
taken in bamboo stake traps and with hand lines         geographically from west to east as listed above.
in Thailand (Tongyai 1970) and by trolling or           No significant differences were found between
with hook and line in India and Malaysia (Rao           populations in the Arabian Sea and Bay of Ben-
1964; Jones 1968; Pathansali 1968). It is utilized      gal, but there were significant differences be-
fresh or salted in most areas (India-Jones 1967;        tween all other adjacent populations: Bay of Ben-
Cambodia-Merceron 1970; Thailand-Tongyai                gal vs. East Indies (Sn-P1 ), East Indies vs. Gulf of
1971b). It can be stored on ice for 10-13 d (Shenoy     Thailand (Interorbital), Gulf of Thailand vs. Chi-
and James 1974). Although less abundant than            na (Sn-lD, interorbital, and 2D-C). The Arabian
the Indian mackerels (Rastrelliger spp.), it is         Sea and Bay of Bengal populations were com-
highly esteemed for food and commands a high-           bined, the regressions rerun, and compared with
er price in Thailand and India (Tongyai 1966a;          the other three populations with ANCOVA. Null
Pathansali 1968).                                       hypotheses that the 4 sets of regression lines are
                                                         coincident were accepted for 15 sets, rejected for
Distribution. -Indo-West Pacific from Taiwan to         11 sets: Sn-lD, Sn-P1 , Head L, maximum body
the Gulf of Thailand, Java, and Sumatra west             depth, Base ID, Base 2D, Base A, maxilla L, orbit
around the Bay of Bengal and Arabian Sea into            (fleshy), interorbital, and 2D-C. The Newman-
the Persian Gulf (Fig. 55). The northernmost             Keuls Multiple Range Test was able to distin-
records are from Wakasa Bay, Japan (Nakamura             guish populations that differed significantly for 7
and Nakamura 1982), Taiwan (FMNH 59284),                 sets of regressions but could not do so for 4:
                                                                                                         635
                                                                                    FISHERY BULLETIN: VOL. 82, NO.4
maximum body depth, Base ·ID, Base 2D, and                  254 (description, synonymy), pI. 46, fig. 2.
Base A. Significant differences were found be-              Delsman 1931:402,407 (vertebrae 20+ 25= 45).
tween the Indian Ocean population and that in               Hardenberg 1931:140 (common, often found in
the East Indies and Gulf of Thailand population             river mouths; Bagan Si Api Api, Sumatra).
in one (interorbital); and between the Gulf of            Cybium koreanum Kishinouye 1915:11 (original
Thailand and China populations in two (Sn-ID                description; Korea), pI. 1, fig. 6. Kishinouye
and maxilla L).                                             1923:420-421 (description), pI. 21, fig. 35. Mori
  One meristic difference was found between                 1928:5 (Fusan, Korea; listed). Morice 1953:37
populations of S. guttatus. The Indian Ocean                (villiform teeth on tongue).
population has a mode of 50 vertebrae while               Sawara koreanum. Soldatov and Lindberg
populations in the East Indies, Gulf of Thailand,           1930:112 (description after Kishinouye).
and China have modes of 51. Gill rakers were              Cybium guttatum. Not of Bloch and Schneider
usually 11 and second dorsal rays 21 in all four            1801. Delsman 1931:402, 407 (vertebrae 20+
populations.                                                25 = 45). Hardenberg 1931:141 (Bagan Si Api
                                                            Api, Sumatra).
Material examined.-TotalI49 (63.3-760).                   Scomberomorus guttatus. Not of Bloch and
                                                            Schneider 1801. Hardenberg 1934:311 (Su-
meas.:    144 (80.0-760): Persian Gulf (2); N Ara-          matra). Delsman and Hardenberg 1934:340-
          bian Sea (6); Malabar coast of India              343 (in part, description, fishery), fig. 248 (in
          (25); Gulf of Mannar (7); Coromandel              part, myomeres 13 + 33 = 46).
          Coast of India (6, *C. interruptum              Scomberomorus koreanus. Munro 1943:68, 71
          Cuvier); "India" (4); Burma (2); Anda-            (placed in subgenus Pseudosawara Munro).
          man Sea (3); East Indies (31, *C. crooc-          Okada 1955:150 (description), fig. 137 (after
          kewitii Bleeker); Gulf of Thailand (17);          Kishinouye). Kamohara 1967:43-44 (descrip-
          China (33).                                       tion, range), color pI. 22, fig. 3. Shiino 1972:71
counts:   143.                                              (common name). Magnuson -1973:350 (short
diss.:    14 (367-548): Karachi, Pakistan (6);              pectoral fin). *Devaraj 1976:79-87 (descrip-
          Cochin, India (1); Gulf of Mannar (4);            tion, validation of species, comparison with S.
          Hong Kong (2).                                    guttatus and S. semifasciatus, synonymy), fig.
                                                            2 (745 mm adult; Palk Bay, India), fig. 3
                                                            (second dorsal and anal fins), fig. 4 (vertebral
      Scomberomorus koreanus (Kishinouye)                   column), fig. 5 (preopercle and liver). Shiino
               Korean Seerfish                              1976:231 (common name). Klawe 1977:2 (com-
                     Figure 56                              mon name, range). *Devaraj 1977 (osteology).
                                                            Collette 1979:24 (characters, range). Col-
Cybium kuhlii.    Not of Cuvier, 1831.    Day 1878:         lette and Russo 1979:13 (diagnostic characters,
FIGURE 56.-Scomberomorus korean us. Ning Po, China, 525 mm FL, NHMVuncat.
636
COLLE'ITE and RUSSO: SPANISH MACKERELS
  range). Nakamura and Nakamura 1982:445-              Color pattern. -Nakamura and Nakamura (1982)
  446 (3 specimens; Wakasa Bay, Sea of Japan;          described fresh specimens taken in Wakasa Bay
  description), figs. lA, 2A. Kyushin et al.1982:      in the Sea of Japan. Body greyish blue dorsally,
  249 (description, photograph). Cressey et al.        silvery white laterally and ventrally. Several
  1983:264 (host-parasite list, 3 copepod species).    longitudinal rows of small brownish spots rather
  Lee and Yang 1983:231 (Taiwan), fig. 22 (550         sparsely scattered along lateral median line. First
  mm FL). Collette and Nauen 1983:66-67 (de-           dorsal fin membrane black. Pectoral, second dor-
  scription, range), fig.                              sal, and caudal fins dark brown. Pelvic and anal
Scomberomorus semifasciatus. Not of Macleay            fins silvery white.
  1884. Fraser-Brunner 1950:159 (C. koreanus              There are good drawings of S. koreanus from
  placed in synonymy of S. semifasciatus).             Japan in Kishinouye (1923:pl. 21) and from India
Sawara koreana. Mori 1952:136 (listed; Fusan           in Devaraj (1976:fig. 2), and there is a good
  and Chinnampo, Korea).                               photograph of a specimen from the Sea of Japan
Scomberomorus guttatus koreanus. Silas 1964:           in Nakamura and Nakamura (1982:fig. lA). There
  313-314, 325-326, 328-329 (description and           is a good color illustration of S. korean us in
  range in part).                                      Kamohara (1967:pl. 22) and a color photograph of
                                                       a 411 mm specimen from the South China Sea in
Types. -Cybium koreanum Kishinouye 1915 was            Kyushin et al. (1982:249).
based on a specimen collected by Yojiro Wakiya
on the west coast of Korea in 1913. There is no        Biology.-Little is known of the migrations or
evidence to indicate that the specimen is still        movements of S. koreanus. Kishinouye (1923)
extant. Data from the original description: D          reported that it spawns at the mouth of Daidoko,
XIV+18-21+IX; A 18-21+VIII; GR 3+10=13;                near Chinnanpo, Korea, in July. Feeds on sar-
vertebrae 20 + 26 = 46.                                dines, anchovies, and shrimps (Kishinouye 1923).
branches that branch from the anterior part of Character N Min. Max. Mean SO
the lateral line on the body (Fig. 56). Scapular          Fork length                     30   160    812    386    201
                                                            Snout-A             %.   FL   30   443    547    493     20
foramen small (Fig. 43e) as in S. guttatus and S.           Snout-20            %.   FL   30   427    512    467     15
niphonius. Supraoccipital crest high (Fig. 15a) as          Snout-10            %.   FL   30   215    254    241       9
                                                            Snout-P2            %.   FL   29   224    267    247     11
in S. guttatus and S. multiradiatus.                        Snout-P,            %.   FL   29   189    223    209       9
                                                            P,-P2               %.   FL   28     99   127    114       7
                                                            Head length         %.   FL   30   187    224    207     11
Description. -Lateral line gradually descending             Max. body depth     %.   FL   30   185    263    236     16
                                                            Max. body width     %.   FL   26     83   115    101       9
to midline on caudal peduncle. Spines in first              P, length           %.   FL   30   112    157    134     11
dorsal fin 14-17, usually 15 (Table 9); second              P21ength            %.   FL   26     44    67     60       7
                                                            P2 insertion-vent   %.   FL   29   192    265    227     19
dorsal fin rays 20-24, usually 22 or 23 (Table 10);         P2 tip-vent         %.   FL   26   135    197    165     19
dorsal finlets 7-9, usually 8 (Table 10); anal fin          Base 10             %.   FL   29   198    270    217     14
                                                            Height 20           %.   FL   26   112    190    165     21
rays 20-24, usually 22 or 23 (Table 11); anal               Base 20             %.   FL   30   120    189    161     14
finlets 7-9, usually 7 or 8 (Table 11); pectoral fin        Height anal         %.   FL   26     96   184    160     19
                                                            Base anal           %.   FL   30   100    171    154     15
rays 20-24, usually 22 or 23 (Table 12). Precaudal          Snout (fleshy)      %.   FL   30     63    77      70      3
                                                            Snout (bony)        %.   FL   30     56    68      62      3
vertebrae 20 (Table 6); caudal vertebrae 26 or              Maxilla length      %.   FL   30     93   120    110       8
27, usually 26 (Table 7); total vertebrae 46 or             Postorbital         %.   FL   29     94   114    101       5
                                                            Orbital (fleshy)    %.   FL   30     21    42      33      7
47, usually 46 (Table 8). Gill rakers on first              Orbital (bony)      %.   FL   30     32    61      50      9
arch (1-2)+(9-12)=11-15, usually 2+(11-12)=13-              Interorbital        %.   FL   30     52    69      61      4
                                                            20-caudal           %.   FL   29   508    586    550     21
14 (Table 5). Morphometric characters given in            Head length                     30     35   152      78    37
Table 18.                                                   Snout (fleshy)      %. HL     30   310    367    340     13
                                                            Snout (bony)        %. HL     30   271    335    300     12
                                                            Maxilla length      %. HL     30   484    565    531      17
                                                            Postorbital         %. HL     29    459   536     488     18
Size. -Maximum size 150 cm FL and 15 kg in                  Orbit (fleshy)      %. HL     30   110    197     157    27
weight; matures at 75 cm and 2.25 kg (Kishinouye            Orbit (bony)        %. HL     30    170   286     238    33
                                                            Interorbital        %. HL     30   259    350     293    22
1923); common to 60 cm.
                                                                                                                          637
                                                                                     FISHERY BULLETIN: VOL. 82, NO.4
Interest to fisheries. -The fishery for this species        S. koreanus: India (n = 5), East Indies (n = 9),
was begun in Daidoko, Korea, by Japanese fisher-            and Japan and China (n = 8-12). Null hypotheses
men in 1917; it is caught in summer and autumn              that the 3 sets of regression lines are coincident
with drift nets and pound nets (Kishinouye 1923).           were accepted for 25 sets, rejected only for body
It is usually not distinguished from other species          width. The Newman-Keuls Multiple Range Test
of seerflshes but comprises an important part of            showed that the population from Japan and Chi-
the drift net fishery in Palk Bay and the Gulf              na differed significantly in slope from that in
of Mannar between southeastern India and Sri                the East Indies. The population in the East Indies
Lanka (Devaraj 1976).                                       did not differ significantly from that in India so
                                                            these two populations were combined and retested.
Distribution. -Continental Indo-West Pacific                The only significant difference was again maxi-
from Japan, Korea, and China south to Singapore             mum body width and the combined India-East
and Sumatra and west to Bombay, India (Fig. 55).            Indies population differed significantly from the
The northern limit ofthe range is Wakasa Bay in             Japan-China population (slopes 0.090,0.123, Q =
the Sea of Japan (Nakamura and Nakamura                     5.987**). No meristic differences were found be-
1982). This species usually does not occur north of         tween populations.
the west and south coasts of Korea (K{shinouye
1923). Specimens obtained in the Tokyo markets              Material examined. - Total 30 (160-812 mm FL).
apparently are usually imported from Korea
(Okada 1955). There are museum specimens from               meas.:    30 (160-812) Tokyo market (4); Hong
Ningpo (MNHN 5513), Swatow, and Hong Kong                             Kong (4); Swatow and Ning-Po (4), Chi-
(BMNH 1939.1.17.48) along the coast of China.                         na; Indochina (1); Sumatra (8); Indone-
There appear to be few specimens or records from                      sia (1); India (5).
the coast of Indochina or the Gulf of Thailand, but         counts:   30.
we have examined specimens from "Cochinchine"               diss.:    6 (420-812): Tokyo market, probably
(MNHN A.6827). There are several reports and spec-                    Korean fish (4); Indonesia (1); Hong
imens from Sumatra (Bagan Api Api, Hardenberg                         Kong? (1).
1931 as Cybium kuhlii; Delsman and Hardenberg
1934 as S. guttatus; ZMA 114.593), but the range                   Scomberomorus lineolatus (euvier)
apparently does not extend out further into the                              Streaked Seerfish
East Indies. Dependable Indian records are from                                    Figure 57
Pondicherry (USNM 216698), Palk Bay, and the
Gulf of Mannar (Devaraj 1976) on the east coast,            Cybium lineolatum Cuvier in Cuvier and Valen-
and Bombay (ANSP 88360) on the west coast.                   ciennes 1831:170-172 (original description; Mal-
                                                             abar, India). Cantor 1849:1092-1093 (descrip-
Geographic variation. -Morphometric data were                tion, range; Pinang). Bleeker 1852:40-41
compared by ANCOVA for three small samples of                (description, synonymy; East Indies). Bleeker
638
COLLETTE and RUSSO: SPANISH MACKERELS
  1853:42 (India). Gunther 1860:370 (descrip-             phorus). Shiino 1976:231 (common name).
  tion; Malaya). Bleeker 1861a:52 (Singapore;             *Rao and Ganapati 1977:101-111 (postlarvae
  listed). Bleeker 1861b:74 (Pinang, Malaya;              and juveniles; India). Klawe 1977:2 (common
  listed). Day 1873:225 (description, range).             name, range). * Devaraj 1977 (osteology).
  Day 1878:256 (description).                             Collette 1979:29 (characters). Collette and
Scomberomorus lineolatum. Malpas 1926:74 (3               Russo 1979:13 (diagnostic characters, range).
  males, 54.5-82.5 cm TL, 1.1-3.4 kg,Ceylon).             *Devaraj 1982 (age and growth). Cressey et
  Frost 1928:329 (otolith similar to that of S.           ai. 1983:264 (host-parasite list, 3copepod spe-
  regalis).                                               cies). Collette and Nauen 1983:68 (description,
Scomberomorus lineolatus. Munro 1943:68; 70               range), fig.
  (placed in subgenus Indocybium; vertebral             Scomberomorus guttatus. Not of Bloch and
  count of 21 + 29 = 50 pertains to another species       Schneider 1801. Fraser-Brunner 1950:160 (Cyb-
  of Scomberomorus, such as S. guttatus). De              ium lineolatum placed in synonymy of Scomber-
  Beaufort 1951:235-236 (synonymy, description,           omorus guttatus).
  range). Tham 1953:49 (Singapore Straits), 50          Indocybium lineolatum. Munro 1955:221 (de-
  (correlation of catch with physical factors and         scription; Ceylon); fig. 651. Chacko et ai. 1968:
  presence of food fishes such as Stolephorus and         1006 (fishery; Madras).
   Clupea). Scott 1959:114 (description; Malaya),
  photograph. Bauchot and Blanc 1961:372                Types. -Holotype: MNHN A.6866; Malabar coast
  (types of Cybium lineolatum). Jones 1962:117-         of India; Dussumier; 707 mm FL; D about XVII +
  119 (eggs, larvae, and juveniles). Jones and          17 + IX;AI9+ X; P 1 21;RGR1 2+ 1+ 8= 11; pattern
  Silas 1961:197-198 (description, range), fig. 4       of three rows of elongate streaks still visible on
  (680 mm adult), fig. 5C (not 5D as legend reads,      type in 1975. Photograph of type published by
  lateral view of head), fig. 6D (gill arch), fig. 7E   Blanc and Bauchot (1964:pI. 3, fig. 15). Paratype:
  (caudal peduncle keels). Jones and Silas 1964:        MNHN 6357; Mahe (Malabar Coast), Belenger;
  58-61 (synonymy, description, range), pI. 7, fig.     only head and tail of a fish about 710 mm FL
  A (photograph of 740 mm specimen). Silas              (judging from head length of145 mm). Photograph
  1964:317, 323-324 (specimens from India only).        of paratype published by Blanc and Bauchot
  Jones and Kumaran 1964:347 (larvae as yet             (1964:pI. 3, fig. 16).
  undescribed). Blanc and Bauchot 1964:447
  (types of Cybium lineolatum), pI. III, figs. 15, 16   Diagnosis.-The only species of Scomberomorus
  (photographs of type-specimens). Rao 1964:            that has a pattern of short lines on its sides (Fig.
  592-594 (teleosts constitute 97% of diet of ju-       57). Other species have some spots, blotches, or
  veniles, Waltair coast of India). Thiemmedh           bars, or are plain. Posterior end of maxilla greatly
  1966:140 (common names). Collette 1966:367-           expanded as in S. plurilineatus and S. semifascia-
   368 (type of Cybium lineolatum). Tongyai             tus. Anterior end of premaxilla forms an acute
  1966a:7-1O (synonymy, occurrence, Thailand),          angle (Fig. 22b). Ascending process of premaxilla
  pI. 2D. Tongyai 1966b:3-15 (5 specimens, 46.5-        very long as in S. sinensis and Acanthocybium.
  76.5 cm FL; Terutao Is., Andaman Sea). Pa-            Supracleithrum wide (Fig. 41a), 53-57% oflength,
  thansali 1968:1002-1003 (fishery; Malaya). Si-        as in S. niphonius. Foramen between last pectoral
  las 1968:1114 (fishery; Gulf of Mannar), pI. 3A       radial and coracoid larger than in any other
  (photograph of adult). Rajan et al. 1969:90           species of Scomberomorus.
  (outer channel; Chilka Lake, India). Tongyai
  1970:559-561 (found in areas of low turbidity         Description. -Lateral line gradually descending
  and high salinity offshore; Thailand). Merce-         to midline on caudal peduncle. Intestine with two
  ron 1970:72 (specimens from near Sihanouk-            folds and three limbs (Fig. 3g). Spines in first
  ville, Cambodia). Tongyai 1971a:16-18 (Thai-          dorsal fin 15-18, usually 16 or 17 (Table 9); second
  land). Fernando 1972:524, 530 (incidental             dorsal fin rays 15-22, usually 17 or 18 (Table 10);
  catches in trawls; Wadge Bank, Ceylon). Rich-         dorsal finlets 7-10, usually 9 (Table 10); anal fin
  ards and Klawe 1972:14 (range), 92 (references        rays 17-22, usually 20 (Table 11); anal finlets 7-10,
  to larvae and juveniles). Banerji 1973:129-130        usually 9 or 10 (Table 11); pectoral fin rays 20-24,
  (seerfish fishery; India). Magnuson 1973:350          usually 23 (Table 12). Precaudal vertebrae 18-20,
  (short pectoral fin). Orsi 1974:175 (listed; Viet-    usually 19 (Table 6); caudal vertebrae 25-28,
  nam). Tham 1974 (possible predator of Stole-          usually 27 (Table 7); total vertebrae 44-46, usually
                                                                                                         639
                                                                                                    FISHERY BULLETIN: VOL. 82, NO.4
46 (Table 8). Gill rakers on first arch 0-2) + (6-ll)                       were taken in shore seines in February-April,
= 7-13, usually 2+ (8-9)= 10-11 (Table 5). Morpho-                          more advanced stages from boat seine catches in
metric characters given in Table 19.                                        July-September. Juveniles feed on teleosts in
                                                                            India (Venkataraman 1961; Rao 1964).
   TABLE 19.-Summary of morphometric data of                       &om-
   beromorus lineolatus.           FL   =    fork length,   HL   =   head   Interest to fisheries. -There are small fisheries for
   length.                                                                  S. lineolatus in the waters around Thailand,
        Character                       N     Min.   Max.   Mean      SO    Malaysia, and India. It is taken from October to
   Fork length                          31     144   786     434      191   November in Thai waters of the Indian Ocean
     Snout-A             %. FL          30     464   540     507       16
     5ooul-20            %. FL          29     453   525     502       17   (Tongyai 1970). It is less abundant than either S.
     Snout-1D            %. FL          30     214   264     253       17   commerson or S. guttatus in the Gulf of Thailand
     Snout'P2            %. FL          27     209   266     245       13
     Snout-P,            %. FL          30     175   237     213       14   and along the Thai coast of the Bay of Bengal
     P,-P2               %. FL          27      81   104      93        6   being found in areas of lower turbidity and higher
     Head length         %. FL          31     174   231     207       13
     Max. body depth     %. FL          27     153   211     181       11   salinity than the other two species (Tongyai 1970).
     Max. body width     %. FL          25      65   117      96       13
     P, length           %. FL          28     117   156     140       11
                                                                            Fished for on both coasts of Malaysia, on the west
     P21englh            %. FL          20      45    70      56        7   coast from November to February in the north and
     P2 insertion-vent   %. FL          24     216   276     240       14
     P2tip·vent          %0 FL          20     156   223     184       15   March to July in the south, and on the east coast
     Base 10             %. FL          24     198   270     231       15   from February to March and August to November
     Height 20           %. FL          23      87   166     124       19
     Base 20             %0 FL          29      89   155     113       15   (Pathansali 1968). Species of Scomberomorus are
     Heighl anal         %. FL          22      80   148     118       15   taken on both coasts of Malaysia mainly by gill
     Base anal           %. FL          28     100   150     123       14
     Snout (fleshy)      %. FL          30      64    88      82        6   nets, but hand lines and trolling lines are also
     Snout (bony)        %. FL          30      55    83      74        6
     Maxilla length      %0 FL          30      93   136     113       11
                                                                            important on the east coast (Pathansali 1968). In
     Postorbital         %. FL          30      75   108      92        8   India, there is an important coastal fishery for the
     Orb~al (fleshy)     %0 FL          30      23    43      33        6
     Orb~al (bony)       %0 FL          29      34    64      48        9   three species of seerfishes of which S.lineolatus is
     Interorbital        %0 FL          29      47    61      57        3   the least common (Silas 1968). Small individuals,
     20-caudal           %. FL          29     462   545     500       23
   Head length                          31      33   147      88       35   up to 50 cm, are taken, together with S. commer-
     Snout (fleshy)      %.   HL        30     325   438     395       24   son and S. guttatus, during the multiple troll
     Snout (bony)        %.   HL        30     276   398     358       28
     Maxilla length      %0   HL        30     473   596     547       24   fishery season (May-September) in gill nets 5-12 .
      Postorb~al         %0   HL        30     404   512     443       24
      Orbit (fleshy)     %.   HL        30     131   215     157       24
                                                                            mi offTuticorin in the GulfofMannar, India (Silas
      Orbit (bony)       %.   HL        29     188   284     231       30   1968). Gill nets, hook and line, and trolling are the
      Interorbital       %.   HL        29     255   292     275       10
                                                                            most important gear types in India (Silas 1968).
                                                                            Scomberomorus spp., or pIa in-see in Thai, are
                                                                            highly esteemed foodfishes in Thailand and are
Size.-Maximum size 80 cm FL.                                                consumed as spicy fish-burgers (tad-muD. pIa in-
                                                                            see) or high-quality salted fish (Tongyai 1966a). A
Color pattern. -Body dark bluish dorsally, sil-                             monthly average of about 100 t, fresh or salted, is
very white ventrally, marked with several rows of                           consumed in Bangkok alone (Tongyai 1966a).
elongate lines (Fig. 57). First dorsal fin black                            Seerfishes form a much smaller proportion of the
anteriorly, white posteriorly.                                              catch in India than mackerels (Rastrelliger spp.),
  There is a good drawing of a specimen from                                but are much in demand both fresh and salt-cured
India in Jones and Silas (1962:fig. 4). There are                           (Jones 1968).
also poor photographs in Jones and Silas (1964:pl.
7) and Silas (1968:pl. 3).                                                  Distribution. -Gulf of Thailand and Java west
                                                                            around India at least to Bombay (Fig. 58). There
Biology. -Little has been reported in the litera-                           are records and specimens from Cambodia (Merce-
ture on the biology of S. lineolatus. A ripe male                           ron 1970) and Thailand (Tongyai 1966b, 1971a;
(82.5 cm TL, 3.4 kg) was taken on Wadge Bank, off                           CAS-GVF 60-286) in the Gulf of Thailand and
southern India on 2 October (Malpas 1926). A                                from both coasts of Malaysia (Cantor 1849; Bleek-
running ripe female (76.5 cm, 4.4 kg) was caught                            er 1861b; Scott 1959; CAS SU 14100; BMNH
in January in the Bay of Bengal off Satun,                                  1860.3.19.215), Singapore Straits (Tham 1953),
Thailand, near the border with Malaysia (Tongyai                            Java (USNM 72632), and Sumatra (NHMV 1874.1;
1966b). Postlarvae and juveniles (18.4-99.5 mm)                             ZMA 114.595). Central Indian Ocean reports and
were described from Waltair on the east coast of                            specimens are from Madras (ZSI 2156-7), Palk Bay
India by Rao and Ganapati (1977). Early stages                              (Devaraj 1977; dissections), Sri Lanka (Fernando
640
COLLE'ITE and RUSSO: SPANISH MACKERELS
60' 90'
1972), Wadge Bank south of India (Malpas 1926),                              Andaman Sea (4); Gulf of Thailand (5);
the Malabar coast (MNHN A.6866, holotype of C.                               East Indies (7).
lineolatum), Cochin (5 specimens measured, 1                     counts:     31.
dissected), and Bombay (MNHN A.5783). Records                    diss.:      5 (417-786): Palk Strait (4); Cochin (1).
of S. lineolatus from East Mrica (Williams 1960)
are referrable to S. plurilineatus. The report of S.
lineolatus from Western Australia (McKay 1970)                          Scomberomorus maculatus (Mitchill)
was based on a specimen (HUMZ F-422) of S.                                      Spanish Mackerel
munroi.                                                                                    Figure 59
FIGURE 59.-Scomberomorus maculatus. New York market, 270 mm FL, USNM 15582. (From Goode 1884:pl. 93.)
  Smiley 1881 (distribution, fishery). Ryder 1882            1937-42; Texas). La Monte 1945:26, 28 (de-
  (gonads, embryology, development), pI. 1-4                 scription, range), color pI. 11. Breder 1948:127
  (eggs, embryos, and larvae). Earll 1883 (name,             (range in part, biology), fig. Erdman 1949:301
  description, distribution, movements, reproduc-            (range confined to coastal America and the
  tion, fishery, artificial propagation), pI. 1.             N coast of Cuba; other West Indian records
Scomberomorus maculatus. Jordan and Gilbert                  are misidentifications). Fraser-Brunner 1950:
  1882:426 (synonymy, range in part). Goode                  159 (synonymy and range in part), fig. 29.
  1884:307-315 (range, fishery, reproduction), pI.           Baughmall- 1950:244 (numerous Texas records
  93. Meek and Newland 1884:232-234 (descrip-                throughout the year). Knapp 1950:142 (458
  tion, synonymy, range in part). Dresslar and               stomach contents, Texas). Rivas 1951:225-226
  Fesler 1889:442 (in key), 443 (synonymy and                (synonymy in part, diagnosis, range). Taylor
  range in part), pI. 9. Jordan and Evermann                 1951:116-118 (biology, occurrence in North Caro-
  1896b:874 (description, synonymy in part).                 lina), 271-272 (angling in North Carolina). La
  Jordan and Evermann 1900:pI. 134, fig. 368                 Monte 1952:50 (description, range), color pI.
  (specimen from New York market). Jordan                    18. Bigelow and Schroeder 1953:347-348 (de-
  and Evermann 1902:285-286 (description,                    scription, range in part, only a stray in the Gulf
  range), fig., photograph. Bean 1903:396-398                of Maine), fig. 182. Pew 1954:26 (description,
  (synonymy, description, range in part, occur-              range, habits), fig. 23. Mather and Day 1954:
  rence in New York). Smith 1907:190-192 (diag-              185 (comparison of Wand E Atlantic speci-
  nosis, size, range, catch, price; North Carolina),         mens; S. tritor at best racially distinct from
  fig. 77. Sumner et aI. 1913:750 (references,               S. maculatus). Briggs 1958:286 (range in
  occurrence, parasites; Buzzards Bay and Vine-              part). Springer and Pirson 1958:175 (catch in
  yard Sound, Mass.). Schroeder 1924:6-7 (most               Texas). *Mago Leccia 1958 (osteology, com-
  valuable food fish in the Florida Keys, range in           parisons with S. regalis and S. cavalla), figs.
  part), fig. 3. Nichols and Breder 1927:123-124             *Klima 1959 (distribution, biology). Moe 1963:
  (description, range, biology), fig. 170. Frost             109 (second most fished for species by private
  1928 (sagitta similar to that ofS. regalis). Hil-          boats in Florida). Jorgensen and Miller 1968:
  debrand and Schroeder 1928:203-205 (descrip-               9,13 (SL-FL-TL conversions). *Mendoza 1968
  tion, range, biology, synonymy; Chesapeake                 (biology; Veracruz). Lyles 1969:1-15 (landings,
  Bay), fig. 115. Nichols 1929:229-230 (synon-               in part). Wollam 1970 (development, pigmen-
  ymy, range, description), fig. 82. Hildebrand              tation, counts, and measurements; 175 larvae
  and Cable 1938:508-518 (development of larvae              and juveniles, 3.1-25 mm SL, from the Gulf of
  and postlarvae; Beaufort, N.C.), figs. 2-10 (lar-          Mexico), figs. 2,3, 6A (larvae and juveniles, 3.1-
  vae and juveniles, 2.75-97 mm). Baughman                   25 mm SL). Beardsley and Richards 1970:5
  1941:17 (migratory off Texas coast). Munro                 (length-weight of35 specimens from SE Florida,
  1943:67, 71-72 (placed in subgenus Scomber-                330-770 mm FL, 0.45-4.76 kg). Farragut 1972
  omorus). Fowler 1945:185-186 (synonymy, de-                (use of antioxidants to prevent rancidity during
   scription; South Carolina). Gunter 1945:55                frozen storage). Richards and Klawe 1972:14
   (occurrence, Texas), 145 (monthly production,             (range in part), 92-93 (references to eggs and
642
COLLE'ITE and RUSSO: SPANISH MACKERELS
  larvae). Miyake and Hiyasi 1972:III-3 (in key);      rate sides; more than half anterior part of first
  IV-11 (common names). Dwinell and Futch              dorsal fin black, remainder white) leave no doubt
  1973 (188 larvae and juveniles, 2.8-42.2 mm SL,      as to identity of name.
  caught in June, Aug., and Sept., NE Gulf of
  Mexico). Marquez 1973 (distribution, biology,        Diagnosis. -Scomberomorus maculatus pos-
  fishery). * Powell 1975 (age, growth, reproduc-      sesses nasal denticles as do the other five species of
  tion; Florida). * Berrien and Finan 1977b (in        the regalis group (brasiliensis, concolor, regalis,
  part; species synopsis). Klawe 1977:2 (com-          sierra, and tritor) and has an artery branching
  mon names, range). Fritzsche 1978:126-132            from the fourth left epibranchial artery as do all
  (description, larval development), figs. 70-74       the species in the group except S. tritor. Like S.
  (eggs, larvae, and juveniles). Collette 1978:        concolor, S. maculatus lacks the shunt from the
  Scombm 5 (description, range), figs. Collette        fourth right epibranchial artery to the coeliaco-
  et aI. 1978:274-275 (comparison with other           mesenteric artery (Fig. 7c). It also has more
  American species of Scomberomorus). Ma-              vertebrae (51-53) than any ofthe other five species
  nooch et aI. 1978 (annotated bibliography).          in the group (46-49). Intercalar spine absent as in
  Pristas and Trent 1978:582-588 (most abundant        the other five species of the regalis group and S.
  spring-fall; St. Andrew Bay, Fla.). Collette         niphonius.
  1979:29 (characters, range). Collette and
  Russo 1979:13 (diagnostic characters, range).        Description. - Lateral line gradually descending
  Trent and Anthony 1979 (commercial and rec-          to midline on caudal peduncle. Intestine with two
  reational fisheries in U.S.). Doi and Men-           folds and three limbs (Fig. 3h). Spines in first
  dizabal 1979 (Mexican catch). Meaburn 1979           dorsal fin 17-19, usually 18 (Table 9); second dorsal
  (heavy metal contamination). Hale 1979 (pres-        fin rays 17-20, usually 18 or 19 (Table 10); dorsal
  ervation technology). Amezcua-Linares and            finlets 7-9, usually 8 or 9 (Table 10); anal fin rays
  Yaiiez-Arancibia 1980:86-90 (Campeche, Mex-          17-20, usually 19 or 20 (Table 11); anal finlets 7-10,
  ico). McEachran et aI. 1980 (larvae off Texas        usually 8 or 9 (Table 11); pectoral fin rays 20-23,
  coast). Sutherland and Fable 1980 (annual            usually 21 (Table 12). Precaudal vertebrae 21 or
  migration from wintering grounds off S Florida       22, usually 21 (Table 6); caudal vertebrae 30 or 31
  and Campeche to summer grounds along the N           (Table 7); total vertebrae 51-53, usually 51 or 52
   coast of the Gulf of Mexico, return migration in    (Table 8). Gill rakers on first arch (1-4)+ (8-13)=
  fall). Deardorff and Overstreet 1981 (larvae of      10-16, usually 2 + (10-11) = 12-14 (Table 5). Mor-
  4 forms of the anisakid nematode Hysterothy-         phometric characters given in Table 20.
  lacium found in mesentary of specimens from
  the Gulf of Mexico). Johnson 1981 (electro-           Size. - Maximum size 77 cm FL, 4.8 kg (Beardsley
   phoresis; NW Florida). Skow and Chittenden           arid Richards 1970). Sexual maturity in Florida is
   1981 (differences between Atlantic coast and         attained by age II, at 25-32 cm FL for females, 28-
   Gulf of Mexico populations by hemoglobin elec-       34 cm for males (Klima 1959). Length-weight
   trophoresis). Richardson and McEachran 1981          equations have been presented for populations in
   (larvae 1.8-2.9 mm SL, pigment characters,           Florida (Powell 1975) and Veracruz (Doi and
   measurements; Gulf of Mexico), fig.lB (2.1 mm        MendizabaI1979).
   larva). Naughton and Saloman 1981 (stomach
   contents of 344 juveniles, 117-432 mm FL; Cape        Color pattern. -Dark bluish above, silvery below,
   Canaveral, Fla., and Galveston, Tex.; diet main-    . sides marked with about three rows of round to
   ly clupeoids). Adkins and Bourgeois 1982:12-          elliptical dark spots (Fig. 59), orange in life. First
   13, 32-35, 48 (gill net; Louisiana). Cressey et       dorsal fin black anteriorly and at distal margin
   aI. 1983:264 (host-parasite list, 4 copepod spe-      posteriorly, basal part of posterior membranes
   cies). Collette and Nauen 1983:69-70 (descrip-        white.
   tion, range), fig. Saloman and Naughton 1983b           There is a color painting of an S. maculatus in
   (food in U.S. waters).                                La Monte (l945:pI. 11, 1952:pI. 18), and a black and
                                                         white photograph of one in Jordan and Evermann
Types. -Scomber maculatus Mitchill 1817 was              (1902). The drawing published by Goode (1884:pI.
based on a 19-in (482.6 mm) fish from New York.          93) is included here as Figure 59.
No types known to be extant. The figure (pI. 6, fig.
8) and description (about 20 yellowish spots deco-      Biology. -Summaries of biological information
                                                                                                           643
                                                                                                                   FISHERY BULLETIN: VOL. 82, NO.4
have been presented by Mendoza (1968), Marquez       support the Panama City to Mobile and Port
(1973), and Berrien and Finan (1977b). There is      Aransas to Veracruz migrations (Sutherland and
also a useful annotated bibliography by Manooch      Fable 1980). Spawning takes place in New York-
et al. (1978). The Spanish mackerel is clearly a     New Jersey late August-late September, in Chesa-
migratory species that moves north from Florida      peake Bay mid-June to the end of summer, and in
along the Atlantic coast of the United States and    the Carolinas starting in April (Earll 1883). Ripe
north and wes~ along the coast of the Gulf of        females were found in Florida from July to Sep-
Mexico in the spring and returns in the fall, but    tember by Klima (1959) and from April to Septem-
the details of the migration are not completely      ber by Powell (1975). Powell felt that individuals
known. There are large concentrations in the         spawned repeatedly in a prolonged spawning
winter in Florida and the Florida Keys (Beau-        season in Florida. Spanish mackerel spawn from
mariage 1970) which move north to reach Charles-     May to September in waters < 50 m over the inner
ton, S.C., in late March, North Carolina in April,   continental shelfofTexas (McEachran et al. 1980).
Chesapeake Bay in May, and Sandy Hook, N.J.,         Spawning in Veracruz takes place in July-Sep-
to Narragansett Bay, R.I., by late July (Earll       tember (Mendoza 1968). Early studies on develop-
1883; Beaumariage 1970). Schools also move north     ing eggs and larvae (to 6 d old) were carried out by
along the Gulf coast of Florida in the spring (Moe " Ryder (1882) in North Carolina. Larvae have been
1972), and west across the northern Gulf from        described from North Carolina (14-20 mm, Hilde-
Panama City, Fla., to Mobile, Ala. (Sutherland       brand and Cable 1938; some misidentified, see
and Fable 1980), and possibly on into Texas reach-   Wollam 1970), the west coast of Florida (3.1-35.0
ing Galveston in early March and Port Aransas in     mm, June-September, Wollam 1970), the north-
late March (Baughman 1941). There is also north-     eastern Gulf of Mexico (2.8-42.2 mm SL, June-
south migration along the Mexican coast, from        September, Dwinell and Futch 1973), and Texas
south to north in March-April, north to south in     (1.8-11.5 mm SL, May-September, McEachran et
August-November (Mendoza 1968). Tag returns          al. 1980). Most were taken over the middle and
                Character                     N   Min. Max. Mean SO              N    Min. Max. Mean SO       N       Min. Max. Mean SO
           Fork length                        24 163    712      330     137     36   152   593   307   95    60      152   712     316   113
             Snout-A             %.   FL      24 515    570      538      14     36   507   565   534   14    60      507   570     536    14
             Snout-20            %.   FL      24 478    540      505      14     36   466   543   502   16    60      466   543     503    15
             Snout· 10           %.   FL      24 227    260      240      10     36   226   258   242    7    60      226   260     241     8
             Snout-P2            %.   FL      22 216    279      249      14     32   228   300   263   17    54      216   300     257    17
             Snout-P,            %.   FL      24 199    247      217      14     36   193   261   217   12    60      193   261     217    13
             P,-P2               %.   FL      21  95    121      108       8     34    97   132   111    9    55       95   132     110     9
             Head length         %.   FL      24 195    281      213      18     36   195   227   211    9    60      195   281     212    13
             Max. body depth     %.   FL      18 168    232      194      19     33   178   228   198   12    51      168   232     197    15
             Max. body width     %.   FL      18  70    110        89     12     36    65   137    92   15    54       65   137      91    14
             P, length           %.   FL      24 114    146      131       7     35   107   140   129    8    59      107   146     129     8
             P21ength            %.   FL      21  43     66        55      6     33    35    68    50    9    54       35    68      52     8
             P2 insertion-vent   %.   FL      22 241    305      270      16     33   223   299   259   19    55      223   305     263    19
             P2tip-vent          %.   FL      21 188    246      215      18     31   175   233   208   13    52      175   246     211    15
            Base 10              %.   FL      24 236    288      258      13     36   222   286   254   14    60      222   288     256    13
            Height 20            %.   FL      21  92    153      124      14     28   108   141   125   10    49  92        153     125    12
            Base 20              %.   FL      24 109    150      128      10     35   110   158   128   11    59 109        158     128    11
             Height anal         %.   FL      23  97    140      117      13     31    88   133   119   12    54  88        140     118    12
            Base anal            %.   FL      24 100    157      122      14     36   101   147   124   10    60 100        157     123    12
            Snout (fleshy)       %.   FL      24  73     86        78      3     36    74    90    80    4    60  73         90      80     4
            Snout (bony)         %.   FL      24  59     78        69      4     23    63    84    72    5    47  59         84      70     5
            Maxilla length       %.   FL      24 108    134      117       7     36   110   136   120    6    60 108        136     119     6
             Postorbital         %.   FL      23  87    108        98      5     36    84   101    95    4    59  84        108      96     4
             Orbital (fleshy)    %.   FL      24  24     47        34      7     35    26    47    34    4    59  24         47      34     5
             Orbital (bony)      %.   FL      24  41     62        50      7     36    40    65    52    6    60  40         65      51     7
             Interorbital        %.   FL      24  51     60        56      2     36    52    63    57    3    60  51         63      56     3
            20-caudal            %.   FL      23 462    521      493      19     36   438   524   483   22    59 438        524     487    21
           Head length                        24  38    147        69     27     36    34   129    65   20    60  34        147      67    23
             Snout (fleshy)      %.   HL      24 271    401      369      25     36   346   416   381   16    60 271        416     376    21
             Snout (bony)        %.   HL      24 237    360      327      25     23   325   385   343   15    47 237        385     335    22
             Maxilla length      %.   HL      24 401    572      552      34     36   546   628   568   15    60 401        628     562    25
             Postorbllal         %.   HL      23 317    496      461      37     36   407   486   450   16    59 317        496     454    27
             Orbit (fleshy)      %.   HL      24 103    204       159     27     35   121   216   160   17    59 103        216     160    21
             Orbit (bony)        %.   HL      24 153    284      234      29     36   186   308   246   27    60 153        308     242    28
             Interorbital        %.   HL      24 204    296      284      20     36   234   296   268   13    60 204        296     266    16
644
COLLETIE and RUSSO: SPANISH MACKERELS
  inner continental shelf, over depths from 12 to        Anthony 1979). Since 1950, over 92% of the total
  50 m, off Texas at surface water temperatures of       U.S. catch has been landed in Florida (Trent and
  19.6°-29.8° C and salinities of28.3-37.4%. (McEach-    Anthony 1979). In 1976 about 18 million pounds
  ran et al. 1980). Summaries of previous larval         valued at about $3.2 million were landed by com-
  work and illustrations of larvae 2.6-13.5 mm and       mercial fishermen in the United States; in 1970 an
. of juveniles 14-97 mm are contained in Fritzsche       estimated 23 million pounds were landed by rec-
  (1978). As with other members of the genus, food       reational fishermen (Trent and Anthony 1979).
  consists chiefly of small fishes with lesser quanti-   Spanish mackerel is second in volume among
  ties of penaeoid shrimps and cephalopods. Clupe-       Mexico's Gulf of Mexico fisheries with an average
  oids such as menhaden (Brevoortia), alewives           annual production from 1968 to 1976 of4,900 t (Doi
  (Alosa), thread herring (Opisthonema), Spanish         and Mendizabal 1979). Most of this (80%) is
  sardine (Sardinella), and anchovies (Anchoa) are       produced in the state of Veracruz with lesser
  particularly important in North Carolina, Flor-        amounts from Campeche (15%) and Yucatan (5%).
  ida, Texas, and Veracruz (Earll 1883; Knapp 1950;      The early fishery in the United States utilized
  Miles and Simmons 1951; Klima 1959; Mendoza            trolling lines, gill nets, and pound nets (Earll
  1968; Naughton and Saloman 1981; Saloman and           1883). The commercial fishery in Florida utilizes
  Naughton 1983b). Juveniles (100-400 mm FL) ate         stab or floating gill nets, which capture fish of age
  more anchovies (Naughton and Saloman 1981;             II-III, 30-65 cm FL (52% 36-41 cm), and hook and
  Saloman and Naughton 1983b) than adults did.           line, which captures smaller fish, age I-II, 21-69
  Other fishes commonly consumed include Caran-          cm FL (38% 33-35 cm) (Klima 1959). Larger
  gidae, Mugilidae, and Trichiuridae (Klima 1959;        vessels now entering the fishery have power-
  Saloman and Naughton 1983b).                           rollers to retrieve the nets which are mostly nylon;
                                                         airplane spotter pilots locate the fish (Trent and
 Interest to fisheries. - The Spanish mackerel is a      Anthony 1979). Recreational anglers catch Span-
 valued fish to recreational or commercial fisheries     ish mackerel from boats while trolling or drifting
 throughout its range. The fishery along the Atlan-      and from boats, piers, jetties, and beaches by
 tic coast of the United States north of southern        casting, livebait fishing, jigging, and drift fishing
 Florida is seasonal (Klima 1959): late July to          (Trent and Anthony 1979). Fishermen in Veracruz
 September from Rhode Island to New Jersey               employ beach seines (chinchorros playeros), gill
 (Earll 1883), Mayor June to September in Chesa-         nets (redes agalleras), trolling spoons (curricanes),
 peake Bay (Hildebrand and Schroeder 1928), April        and trap nets (almadrabas) (Doi and Mendizabal
 to June 'on the way north, and September-October        1979). Nearly all the catch is consumed fresh,
 on the way south through the Carolinas (Smith           frozen, or smoked (Lyles 1969). A few attempts
 1907; Taylor 1951). The fishery in southern Florida     have been made at canning Spanish mackerel but
 is concentrated in the winter months, October-          the product has not been widely accepted (Earll
 February or March (Klima 1959; Beaumariage              1883; Lyles 1969). Frozen fish begin to show signs
 1970). In northwest Florida, the fishery peaks          of rancidity after as little as 3 mo time in frozen
 March-April (Beaumariage 1970); in Louisiana in          storage, a problem which has been treated with
 June and October (Adkins and Bourgeois 1982);           antioxidants and EDTA (Farragut 1972; Hale
 and in Texas March-April and July-September             1979).
 (Springer and Pirson 1958). As in the Carolinas,
 there are two major capture seasons in Veracruz:        Distribution. - Western Atlantic Ocean from
 45% of the annual production is taken March-            Massachusetts south along the Atlantic coast of
 April during the northward migration and 30%            the United States and the coast of the Gulf of
 October-December in the southward migration             Mexico from Florida to Yucatan, Mexico (Fig. 49).
 (Doi and MendizabaI1979). The beginnings ofthe          There are several summer records from the south-
 Spanish mackerel fishery in the United States           ern side of Cape Cod, Buzzards Bay, Woods Hole,
 were discussed by Earll (1883) and a historical         and Vineyard Sound (Sumner et al. 1913; Bigelow
 summary of the U.S. catch from 1887 to 1967 was         and Schroeder 1953), but only strays are known
 provided by Lyles (1969). The commercial fishery        from further north. Storer (1855) recorded the
 began along the middle Atlantic and Chesapeake          capture of an individual at Lynn in Massachu~etts
 Bay areas before 1850, and by 1880 about 86% of         Bay and stated that individuals had been obtained
  the total U.S. catch of 1.9 million pounds was         at Provincetown, at the tip of Cape Cod, and at
 landed in the Chesapeake Bay area (Trent and            Monhegan Island in Maine. There do not appear to
                                                                                                          645
                                                                                        FISHERY BULLETIN: VOL. 82, NO.4
be any extant specimens to verify these records;                         Gulf of Mexico coast of U.S. (35); Yuca-
there is one specimen labelled only as "Cape Cod"                        tan (1).
(MCZ 23929). The known southern limit of the                   counts:   67.
range is Progreso, Yucatan (MCZ 32894); it is                  diss.:    16 (281-712): Va.-N.C. (3); Ga.-Fla. (7); St.
replaced by S. brasiliensis from Belize to Rio de                        Andrews Bay, Gulf of Mexico, Fla. (6).
Janeiro and by S. regalis in the Bahamas and
West Indies. Reports of S. maculatus from the
West Indies (except for th,e north coast of Cuba)                  Scomberomorus multiradiatus Munro
are referrable to S. regalis (Erdman 1949), those                               Papuan Seerfish
from the eastern Pacific are based on S. sierra, and                                 Figure 60
those from the eastern Atlantic on S. tritor:
                                                           Scomberomorus multiradiatus Munro 1964:168-
Geographic variation. - Morphometric characters              169 (original description; Gulf of Papua off
were compared for two populations of S. macula-              mouth of Fly R.), fig. 12 (holotype). Munro
tus by ANCOVA (Table 20): Atlantic coast of the              1967:200 (description), fig. 339. Magnuson
United States (n = 18-24) and Gulf of Mexico (n =            1973:350 (short pectoral fin). Kailola 1975:235
28-36). Null hypotheses that the 2 sets of regres-           (4 specimens listed; Orokolo Bay, Tureture, 17
sion lines are coincident were accepted for 20 sets          mi W of Fly R.). Klawe 1977:2 (range, common
of regressions and rejected for 6: Sn-lD, Sn-P2 ,            name). Kailola and Wilson 1978:34 (trawled
P1L, Snout (fleshy), Snout (bony), and maxilla               in Gulf of Papua), 60 (number of fin rays). Col-
length.                                                      lette 1979:29 (diagnostic characters). Col-
  There is also a difference in vertebral numbers            lette and Russo 1979:13 (diagnostic characters,
between the eastern U.S. and Gulf of Mexico                  range). Lewis 1981:16 (photograph, biology).
populations. The eastern U.S. population usually             Cressey et al. 1983:264 (host-parasite list, 2
has 31 caudal and 52 total vertebrae ex 30.4, 51.5),         copepod species). Collette and Nauen 1983:
the gulfpopulation has 30 or 31 caudal and 51 or 52          70-71 (description, range), fig.
total vertebrae (x 30.9, 52.1).
  The Gulf ofMexico and eastern U.S. populations           Types. -Holotype: CSIRO C.3172; off northern
also differ electrophoretically. Skow and Chitten-         mouth of Fly River, Papua New Guinea; MV Fciir-
den (1981) found differences in hemoglobin pheno-          wind; 1948-50; 232 mm FL; D XVII + 23 + VIII; A
types between samples from Port Aransas, Tex.,             28+ VI; P 1 23-23; RGR 1 0+ 1 + 2= 3; vertebrae
and Beaufort, N.C.                                         20 + 35 = 55; no spots or vertical bars. Holotype
                                                           illustrated by Munro (1964:fig. 12, 1967:fig. 339).
Material examined. -Total 69 (152-712 mm FL).
                                                           Diagnosis. -The species of Scomberomorus with
meas.:    60 (152-712): Atlantic coast of U.S. (24);       the most vertebrae (54-56) and the fewest gill
FIGURE 60. -Scomberomorus multiradiatus. Gulf of Papua, 312 mm FL, USNM 233696.
646
COLLETIE and RUSSO: SPANISH MACKERELS
rakers (1-4) compared with the other 17 species                        Size. -Maximum size 35 cm FL, 0.5 kg, the
(vertebrae 41-53, gill rakers 1-27). It has the most                   smallest species in the genus, sexually mature at
rays in the anal fin (25-29, compared with 15-24                       < 30 cm (Lewis 1981).
in the other 17 species). Posterior end of maxilla
only slightly expanded as in 8. sinensis. Supra-                       Color pattern. -Dark bluish black dorsally, sil-
occipital crest high as in 8. guttatus and S.                          very white ventrally, with no spots, blotches, or
koreanus. Supracleithrum narrow (Fig. 41b), 43-                        bars (Fig. 60). First dorsal fin black anteriorly and
53% of length as in 8. sinensis, semifasciatus, and                    along distal edge posteriorly with some white at
sierra. Foramen between last pectoral radial and                       base of fin posteriorly. The only previously pub-
coracoid smaller than in any other species of                          lished figures were of the holotype by Munro
Scomberomorus.                                                         (1964:fig. 12, 1967:fig. 339) and a photograph by
                                                                       Lewis (1981:16).
Description. -Lateral-line gradually descending
to midline on caudal peduncle. Intestine with two                      Biology. -Schooling and other behavior unknown
folds and three limbs (Fig. 3i). Spines in first                       (Lewis 1981).
dorsal fin 16-19, usually 17 or 18 (Table 9); second
dorsal fin rays 21-25, usually 23 or 24 (Table 10);                    Interest to fisheries. -Trawled in the Gulf of
dorsal finlets 7-9, usually 7 or 8 (Table 10); anal fin                Papua but too small to be of any commercial
rays 25-29, usually 26-28 (Table 11); anal finlets 6-                  significance.
8, usually 6 (Table 11); pectoral fin rays 20-23,
usually 21 or 22 (Table 12). Precaudal vertebrae 20                    Distribution. -Restricted to shallow turbid wa-
or 21 (Table 6); caudal vertebrae 34-36, usually 34                    ters of the Gulf of Papua off the mouth ofthe Fly
or 35 (Table 7); total vertebrae 54-56, usually 55 or                  River (Fig. 55). The western known limit is Ture-
56 (Table 8). Gill rakers on first arch 0 + (1-4) = 1-4,               ture village, 12 mi west of Daru (Kailola 1975;
usually 0+ (2-3)= 2-3 (Table 5). Morphometric                          DASF FO 2851), and the eastern limit Freshwater
characters given in Table 21.                                          Bay at Kerema (lat. 8°12' S, long. 145°59'E; Kai-
                                                                       lola 1975; several dissected specimens, USNM).
   TABLE 21.-Summary of morphometric data of                 Scom-
   beromorus multiradiatus.           FL = fork length, HL   = head    Material examined. -Total 28 (203-350 mm FL).
   length.
       Character                      N     Min.   Max.   Mean   SO    meas.:    27 (203-350): off Fly R., Gulf of Papua
   Fork length                        27    203    350    253    39              (*8. multiradiatus).
     Snout-A             roo     FL   27    471    540    505    15
     Snout-20            roo .   FL   27    448    508    477    15
                                                                       counts:   28.
     Snout-10            %0      FL   27    230    268    249      9   diss.:    4 (224-323).
     Snout-P,            %0      FL   27    228    255    243      7
     Snout-P,            roo     FL   27    201    229    213      7
     P,·P2               %0      FL   26      93   118    102      6
     Head length         %0      FL   27    198    247    208      8
     Max. body depth     %0      FL   27    205    265    228    16     Scomberomorus munroi Collette and Russo
     Max. body width     %0      FL   27      81   113      95     9          Australian Spotted Mackerel
     P, length           %0      FL   22    121    143    131      5
     P,length            %0      FL   25      29     56     40     6                         Figure   61
     P2 insertion-vent   %0      FL   26    204    299    247    19
     P2 tip-vent         %0      FL   24    160    269    207    24
     Base 10              %0     FL   25    188    243    216    13    8comberomorus niphonius. Not of Cuvier 1831.
     Height 20           %0      FL   17    144    186    167    12
     Base 20             %0      FL   27    154    198    177    13      Munro 1943:86-90 (first Australian record, de-
     Height anal          %0     FL   20    151    178    164      8     scription, range) pI. vii, fig. A. Serventy 1950:
     Base anal            %0     FL   27    176    268    216    18
     Snout (fleshy)       %0     FL   27      70     84     77     3     19 (throughout N Australia, S to Kimberly).
     Snout (bony)         roo    FL   27      59     74     67     4
     Maxilla length       %0     FL   27    117    134    125      3
                                                                         Roughley 1951:110 (description), pI. 45.cfig. after
     Postorbital          roo    FL   27      77     96     86     6     Munro 1943). Taylor 1964:282 (Arnhem Land;
     Orbital (fleshy)     roo    FL   27      30     41     34     3
    Orbital (bony)        roo    FL   27      43     60     52     4     listed after Munro 1958a). Marshall 1964:364-
     Interorbital         %0     FL   27      51     71     58     5     365 (description after Munro 1943), pI. 50, fig.
     20-caudal            %0     FL   24    470    522    494    15
   Head length                        27      42     73     53     9     351. Marshall 1966:205 (description), pI. 50,
     Snout (fleshy)      roo     HL   27    317    407    372    18      fig. 351. Kailola 1974:72 (description, first rec-
     Snout (bony)        roo     HL   27    278    349    321    19
     Maxilla length      roo     HL    27   514     630    603    21     ord from Papua New Guinea). Kailola 1975:
     Postorbital         roo     HL    27    339    469    415    35
     Orbit (fleshy)      roo     HL    27    121    195    165    16
                                                                         237 (listed, fish. reference collection). Zhang
     Orbit (bony)        %0      HL    27    190    287    252    23     and Zhang 1981:104 (Australia).                -
     Interorbital        roo     HL    27   257     342    280    22
                                                                       Sawara niphonia. Not of Cuvier 1831. Munro
                                                                                                                        647
                                                                                        FISHERY BULLETIN: VOL. 82, NO.4
FIGURE 61.-Scomberomorus munroi. Deception Bay, Queensland, 740 mm FL, USNM 218387, holotype.
  1958a:20 (description; new record for W Austra-          straight intestine, and in having more vertebrae
  lia); fig. Whitley 1964a:240 (fig. 5, range),            (50-52, usually 51 vs. 48-50, usually 49).
  252 (range, size). Whitley 1964b:48 (listed).
  Grant 1965:175 and 1972:104 (description after           Description. - Lateral line gradually descending
  Munro 1958a), fig. Grant 1975:162 (descrip-              to midline on caudal peduncle. Intestine with two
  tion), 163 (color pI. 41). Grant 1978:190 (de-           folds and three limbs (Fig. 3j). Spines in first
  scription), 191 (color pI. 73).                          dorsal fin 20-22, usually 20 or 21 (Table 9); second
Sawara niphonius. Not of Cuvier 1831. Rohde                dorsal fin rays 17-20, usually 18 (Table 10); dorsal
  1976 (no monogenes found on 1 specimen from              finlets 9 or 10, usually 9 (Table 10); anal fin rays
  Coffs Harbour, N.s.W).                                   17-19, usually 17 or 18 (Table 11); anal finlets 8-10,
Scomberomorus sp. Collette 1979:29 and Collette            usually 9 (Table 11); pectoral fin rays 21-23,
  and Russo 1979:13 (Australian population re-             usually 21 or 22 (Table 12). Precaudal vertebrae 21
  ferred to S. niphonius actually an undescribed           or 22, usually 22 (Table 6); caudal vertebrae 28-30,
  species).                                                usually 29 (Table 7); total vertebrae 50-52, usu-
Scomberomorus munroi Collette and Russo 1980:              ally 51 (Table 8). Gill rakers on first arch 2 +
  243-248 (original description; Australia, Papua          (8-10)=10-12, usually 8+(8-9)=10-11 (Table 5).
  New Guinea), fig. 1 (holotype). Lewis 1981:              Morphometric characters given in Table 22.
  18 (photograph, biology). Grant 1982:622 (de-
  scription), 623 (color pI. 323). Cressey et              Size. -Maximum size 100 cm FL, 8 kg; more
  al. 1983:264 (host-parasite list, 4 copepod spe-         commonly 50-80 cm and 4.5 kg in weight (Lewis
  cies). Collette and Nauen 1983:71-72 (descrip-           1981); size at first maturity 50-55 cm (A. D.
  tion, range), fig.                                       Lewis 5 ). A 9.1 kg fish was caught near Rock-
                                                           hampton, Queensland, in 1976 (G. McPherson 6 ).
Types. -Holotype: AMS 1.21029-001; Deception
Bay N of Brisbane, Queensland; M. Dredge; 15               Color pattern. -Sides with several poorly defined
May 1975; 705 mm FL; D XXI+18+X; A 18+X;                   rows of round spots, larger than pupil but smaller
P 1 22; RGR 1 2 + 1 + 7 = 10; vertebrae 22 + 30 =          than diameter of eye (Fig. 61). Scomberomorus
52. Paratypes: 10 (373-820 mm FL) from Queens-             niphonius has more numerous, smaller spots,
land and southern coast of Papua New Guinea (see           usually about size of pupil. Munro (1943:87) re-
Collette and Russo 1980:247).                              ported sides of freshly caught specimens light
                                                           silvery grey, upper part of back and inner surface
Diagnosis. - This species differs from all other           of pectoral fin dark blue, cheeks and belly silvery
species of Scomberomorus in lacking an anterior
process on the outer surface of the head of the
maxilla (Fig. 23b). It is superficially similar to S.
                                                             5 A. D. Lewis, Principal Fisheries Officer, Department of
niphonius in being spotted and having many                 Agriculture & Fisheries, P.O. Box 358, Suva, Fiji, pers. commun.
spines (20-22) in the first dorsal fin. It differs from    February 1983.
                                                             "G. McPherson, Fishery Biologist, Northern Fisheries Ser-
S. niphonius in having the usual two loops and             vice, Queensland Fisheries Service, % Post Office, Bungalow,
three limbs to the intestine instead of having a           Cairns, Qld. 4870, Australia, pers. commun. February 1983.
648
COLLETTE and RUSSO: SPANISH MACKERELS
white, anal fin light silvery grey, and anal finlets                    coast of Queensland from Double Island Point to
silvery grey. First dorsal fin black (bright steely                     Southport (Grant 1982). Other biological informa-
blue in fresh specimens according to Munro) with                        tion is lacking on this species.
blotches of white toward bases of more posterior
membranes in some specimens. First dorsal fin                           Interest to fisheries. -Together with Grammator-
membranes entirely black in holotype (Fig. 61).                         cynus and three other species of 8comberomorus,
Most other species of 8comberomorus with more                           mackerel fishing is Queensland's second major
extensive white areas on posterior half or middle                       finfishery with an annual output of about 1,000
third of dorsal fin.                                                    tons of whole and filleted fish (Anonymous 1978).
   An excellent black and white illustration of 8.                      The best catches are made by drifting or anchoring
munroi drawn by Munro has appeared several                              over inshore Queensland reefs and fishing with
times in the literature (Munro 1943, 1958a;                             lines baited with small fish on a gang of three or
Roughley 1951; Marshall 1964, 1966) and another                         four linked hooks (Grant 1982). Also taken by
drawing by George Coates has been published by                          trawlers in the Gulf of Papua.
Grant (1965 and subsequent editions). We (Col-
lette and Russo 1980) illustrated the holotype with                     Distribution. -Inshore coastal waters of the
the same figure that is included here. Grant has                        northern coast of Australia (Fig. 58) from Abrol-
included a color photograph of a freshly caught                         hos Islands region in Western Australia to Coffs
specimen in the last three editions of his book                         Harbour and Kempsey in northern and central
(1972:pI. 41, 1978:pI. 73, 1982:pI. 323). A photo-                      New South Wales (Munro 1943, 1958a; Serventy
graph was included by Lewis (1981:18).                                  1950; Whitley 1964a; Lewis 1981) and Gulf of
                                                                        Papua along southern coast of Papua New Guinea
Biology. -At the end of summer in the Southern                          from Kerema to Port Moresby (Kailola 1974,
Hemisphere (December to April or May), large                            1975). Previously referred to as 8. niphonius in
schools of 8. munroi move close inshore along the                       Australia (Munro 1943).
  column). Boeseman 1947:95-96 (specimens in                  pectoral fin). Kusaka 1974:146 (urohyaD, fig.
  Burger's collection).                                       269. Anonymous 1975:184 (description, range),
Cybium gracile Gunther 1873:378-379 (original                 map of fishery, color fig. Masuda et al. 1975:79
  description; Cheefo, China). Morice 1953:37                 (fig. G, color photograph), 256 (range). Uyeno
  (tongue smooth).                                            and Fuji 1975:14 (characters ofcaudal complex).
Scomberomorus niphonius. Steindachner and                     Shiino 1976:231 (common name). Klawe 1977:
  Doderlein 1884:180-181 (description; Japan).                2 (common name, range). Collette 1979:24
  Jordan et a1. 1913:121 (Japanese common                     (characters, range). Collette and Russo 1979:
  names). Kamiya 1922:14-15, 26-32 (eggs and                 13 (diagnostic characters, range). Liu 1981:
  larvae; Ja,pan), pI. IV-V, figs. 1-24 (develop-             129-137 (age and growth). Zhang and Zhang
  mental sequence of eggs and larvae). Kamiya                 1981:104 (range in part). *Liu et al. 1982:170-
  1924:35 (eggs). Tanaka 1927:154-157 (descrip-               178 (age and growth; Yellow Sea). *Wang
  tion from 530 mm specimen from Tokyo mar-                   1982:51-55 (catch, length-weight, management;
  ket), pI. 42, figs. 163 and 164, pI. 44, fig. 173.          Yellow Sea). Cressey et al. 1983:264 (host-
  Soldatov 1929:5 (listed). Munro 1943:67-68, 71              parasite list, 4 copepod species). Lee and Yang
  (subgenus Sawara). Fraser-Brunner 1950:                     1983:230 (Taiwan), fig. 20 (619 mm FL). Col-
  157-158 (description, range; "Scomber" gracile a            lette and Nauen 1983:72-73 (description, range),
  synonym of S. niphonius), fig. Okada 1955:                  fig. Ye and Zhu 1984 (bioeconomics).
  149 (description, range, biology), fig. 136 (after        Sawara niphonia. Jordan and Hubbs 1925:214
  Kishinouye). Mori 1956:23 (Kasumi, Hamada;                  (new genus Sawara; specimen from Kobe mar-
  S. Japan Sea). Mito 1960:79, 93 (eggs compared              ket). Reeves 1927:9 (Ningpo, Peitaiho, China;
  with those of S. commerson). Mito 1961:457                  listed). Mori 1928:5 (Fusan, Korea). Solda-
  (eggs and larvae). Tominaga 1964:vol. 1, pI.                tov and Lindberg 1930:112 (synonymy, descrip-
  198 (figure; anatomy), vol. 3:256-257 (descrip-             tion, range). Suyehiro 1942:123-124 (intestine
   tion, habits, distribution). Jones and Silas               straight), fig. 78 (pyloric caeca). Honma 1952:
  1964:52-54 (description, synonymy, range; in                143 (Echigo Provo = Niigata Pref., Japan).
   part, only Chinese and Japanese specimens).                Mori 1952:136 (Fusan, Masan, Quelpart I., Ko-
   Gorbunova 1965a:53 (spawning season). Sha                  rea; listed). Nalbant 1970:58 (Kamchatka?).
   et a1. 1966:1-12 (eggs and larvae), figs. Mito           Scomberomorus gracileus (sic). Reeves 1927:8
   1966:22-23 (fig. 15a, egg), 46-47 (fig. 26, lar-            (Cheefo, Chinwangtao, China; listed).
   va). Mito 1967:41 (vertical distribution of lar-
   vae). *Hamada and Iwai 1967:1013-1020 (fish-             Types of nominal species. -Cybium niphonium
   ing seasons, length-weight, growth; Inland Sea           Cuvier in Cuvier and Valenciennes 1831 was
   of Japan), pI. 1 (otoliths). Kamohara 1967:43            based on a figure of a specimen from Japan,
   (description, range in part), color pI. 22, fig.         no type-specimens extant (Blanc and Bauchot
   2. Tokida and Kobayashi 1967:158 (identifica-            1964:449).
   tion of C. niphonium from Uchimura's unpub-                Cybium gracile Gunther 1873. Holotype:
   lished 1884 manuscript). Kim 1970:37-40 (age             BMNH 1873.9.23.4; Cheefoo, N China; R. Swin-
   determination; Korea). Uyeno 1971:79 (Japan              hoe; 547 mm FL; D XX+16+IX; A 18+ VIII; P 1
   Sea). Richards and Klawe 1972:14 (range), 93             22-23; RGR 1 2 + 1 + 10 = 13; vertebrae 22 + 27 = 49.
   (references to eggs and larvae). Shiino 1972:71
   (common name). Magnuson 1973:350 (short                  Diagnosis.-The only species of Scomberomorus
650
COLLETIE and RUSSO: SPANISH MACKERELS
with a straight intestine (Fig. 3k). The other                           Color pattern. -Kishinouye (1923:422) described
species have two or four loops. Scapular foramen                         S. niphonius as shining with a metallic lustre.
small as in S. guttatus and S. korean us. Intercalar                     Dorsum light greyish blue washed with green,
spine absent as in the six species of the regalis                        belly silvery. Seven or more rows of longitudinal
group. Supracleithrum wide, 55-62% oflength, as                          spots on the sides. Some spots connected together
in S. lineolatus.                                                        (Fig. 62). There are more numerous, smaller spots
                                                                         than in S. munroi, about pupil size (Collette and
Description. -Lateral line gradually descending                          Russo 1980). Anterior quarter of first dorsal fin
to midline on caudal peduncle. Spines in first                           and a narrow distal margin ofthe rest ofthe dorsal
dorsal fin 19-21, usually 20 (Table 9); second dorsal                    fin black, most of basal membranes of posterior
fin rays 15-19, usually 16-18 (Table 10); dorsal                         three-quarters of fin white.
finlets 7-9, usually 8 (Table 10); anal fin rays 16-                        There are color paintings of S. niphonius in
20, usually 17 or 18 (Table 11); anal finlets 6-9,                       Kamohara (1967:pl. 22) and Anonymous (1975:pl.
usually 8 or 9 (Table 11); pectoral fin rays 21-23,                      184), a color photograph in Masuda et al. (197q:79),
usually 22 (Table 12). Precaudal vertebrae 21-23,                        and a good black and white illustration in Kishi-
usually 22 (Table 6); caudal vertebrae 27 or 28,                         nouye (1923:fig. 32). We (Collette and Russo 1980:
usually 27 (Table 7); total vertebrae 48-50, usually                     fig. 1b) included the drawing that is presented
49 (Table 8). Gill rakers on first arch (2-3) + (9-                      here in the paper describing S. munroi.
12)=11-15, usually 2+(10-11)=12-13 (Table 5).
Morphometric characters given in Table 23.                               Biology.-There are two migrations in the Inland
                                                                         Sea of Japan, a spawning migration in the spring
Size. -Maximum size 100 cm FL, 4.5 kg in weight                          (March to June) and feeding migration in the fall
(Kishinouye 1923). Age and growth studies have                           (September to November) according to Hamada
been published by H~mada and Iwai (1967), Kim                            and Iwai (1967). The spawning season in Japan is
(1970), and Liu et al. (1982).                                           from April to May (Kishinouye 1923). The ripe
                                                                                                                                            651
                                                                                      FISHERY BULLETIN: VOL. 82, NO.4
eggs are large, about 1.5 mm in diameter and                recently described S. munroi (Collette and Russo
number about 550,000-870,000 (Kishinouye 1923).             1979).
Immature fish of about 30 mm are found in April
and May (Kishinouye 1923). Eggs and larvae up to            Geographic variation. -Morphometric characters
35 mm TL are described by Sha et al. (1966) from            were compared for two populations of S. niphonius
plankton net samples from Kiaochow Bay, Tsing-              by ANCOVA (Table 23): Japan and Korea (n = 9-
tao, China. Although it feeds on small fishes               13) and China (n = 11-16), Null hypotheses that
(Kishinouye 1923), no detailed food studies seem            the 2 sets of regression lines are coincident were
to have been published.                                     accepted for 21 regressions and rejected for 5 sets:
                                                            Sn-A, Sn-1D, maximum body width, PlL, and
Interest to fisheries. -In the Inland Sea of Japan,         orbit (bony). No meristic differences were found
the main fishing seasons are from March to June             between the two populations.
and from September to November (Hamada and
Iwai 1967). Angling and gill nets are important             Material examined. -Total 38 (86.5-788 mm FL).
gear in this region. There are also important
fisheries in the Huanghai Sea (Yellow Sea) and              meas.:    31 (97.5-705): Japan (8); Korea (5); China
Bohai Sea (Liu et al. 1982). Ye and Zhu (1984) have                   (16); unknown locality (2).
developed a bioeconomic model for this fishery,             counts:   38.
estimating maximum revenue, optimum econom-                 diss.:    2 (683-788): Japan.
ic effort, and optimum energy consumption. The
annual catch reported by China, Japan, and Korea
varied from 60,733 to 77,356 t between 1979 and               Scomberomorus plurilineatus Fourmanoir
1982 (FAO 1984).                                                Queen Mackerel or Kanadi Kingfish
                                                                                   Figure ?3
Distribution. -Confined to temperate and sub-
tropical waters of the western North Pacific,               Cybium lineolatum. Not of Cuvier 1831. Gil.-
Japan, Korea, and northern China (Fig. 58). The               christ and Thompson 1911:41 (description;
northernmost locality is Vladivostok, U.S.S.R., in            Durban).
the Sea of Japan (BMNH 1893.1.27.10-12). In                 Scomberomorus lineolatum. Not of Cuvier 1831.
Japan, it is found from southern Hokkaido to                  Gilchrist and Thompson 1917:395 (Natal).
Honshu, Shikoku, and Kyushu, west to Pusan,                 Scomberomorus lineolatus. Not of Cuvier 1831.
Korea (CAS SU 31263), and Ningpo, Peitaiho                    Barnard 1927:803 (description; Natal). Fowler
(Reeves 1927; ZMA 114.597), Cheefo (= Yentai)                 1934:441 (Durban). Smith 1935:210-211 (de-
(Gunther 1873; BMNH 1873:9.23.40; UMMZ                        scription; Port Alfred, South Africa). *Wil-
167374), and Tsingtao (USNM 130474) on the                    liams 1960:183-192 (description, synonymy,
Shantung Peninsula of northern China. Records                 range), pI. 2. *Williams 1964:151-154 (distri-
of S. niphonius from northern Australia and                   bution, fishery biology). Merrett and Thorpe
southern Papua New Guinea are referrable to the               1966:371-372 (references, range, size, biology).
FIGURE 63.-Scomberomorus plurilineatus. Durban, South Africa, 598 mm FL, USNM 264809.
652
COLLE'ITE and RUSSO: SPANISH MACKERELS
Scomberomorus leopardus. Not of Shaw 1803.                        Description. -Lateral line gradually descending
  Fowler 1929:254 (description; Natal). Smith                     to midline on caudal peduncle. Intestine with two
  1949, 1953, 1961:301 (description, range), fig.                 folds and three limbs (Fig. 31). Spines in first
  841, pI. 64. Morrow 1954:815 (near Shimoni                      dorsal fin 15-17, usually 15 or 16 (Table 9); second
  and Pemba I., East Africa). Talbot 1965:469                     dorsal fin rays 19-21, usually 20 (Table 10); dorsal
  (Mafia area, Tanganyika). Mauge 1967:234                        finlets 8-10, usually 9 (Table 10); anal fin rays 19-
  (Anakao, Thlear region, Madagascar). Shiino                     22, usually 20 or 21 (Table 11); anal finlets 7-10,
  1976:231 (common name).                                         usually 8 or 9 (Table 11); pectoral fin rays 21-26,
Scomberomorus sp. Williams 1956:44 (Kenya).                       usually 22 or 23 (Table 12). Precaudal vertebrae 19
Scomberomorus guttatus. Not of Bloch and                          or 20, usually 20 (Table 6); caudal vertebrae 25-27,
  Schneider 1801. Smith 1956:722 (Aldabra).                       usually 26 (Table 7); total vertebrae 45 or 46,
  Smith and Smith 1963:43 (Seychelles), pI.                       usually 46 (Table 8). Gill rakers on first arch (2-
  30B. Smith 1964:176-177 (description; Durban                    3)+(9-13)=12-15, usually 2+(10-11)=12-13 (Ta-
  and Delagoa Bay), pI. 8, figs. 3-5. Silas 1964:                 ble 5). Morphometric characters given in Table 24.
  314-328 (western Indian Ocean population
  only). Smith and Smith 1966:72 (Natal), color                      TABLE 24.-Summary of morphometric data of Scom-
  pI. 841.                                                           beromorus plurilineatus. FL = fork length, HL = head
Cybium leopardus. Not of Shaw 1803. Four-                            length.
  manoir 1957:227 (description; Mozambique                               Character                   N    Min.   Max.   Mean   SO
  Channel).                                                          Fork length                     37   144    910    547    211
Cybium lineolatus. Not of Cuvier 1831. Four-                           Snout-A             %.   FL   36   478    614    502     22
                                                                       Snout-20            r.   FL   36   446    622    473     28
  manoir and Crosnier 1964:387-388 (Mada-                              Snout-1D            %.   FL   36   202    247    221     12
  gascar).                                                             Snout-P,            r.   FL   36   207    261    232     12
                                                                       Snout-P,            %.   FL   37   176    228    192     11
Scomberomorus plurilineatus Fourmanoir 1966:                           P,-P,               r.   FL   26    96    117    103      5
                                                                       Head length         %.   FL   37   175    222    193     11
  223-226 (original description; Madagascar), fig.                     Max. body depth     %.   FL   32   184    225    205     11
  1. Klawe 1977:2 (range, common name). Col-                           Max. body width     %.   FL   20    76    123     97     13
                                                                       P, length           r.   FL   31    98    140    123     10
  lette 1979:29 (characters). Collette and Russo                       P, iength           %.   FL   35    44     66     51      6
  1979:13 (diagnostic characters, range). * Van                        P2 insertion-vent   r.   FL   24   223    257    244      9
                                                                       P, tip-vent         r.   FL   23   158    207    187     15
  der Elst 1981:275 (description, natural history,                     Base 10             %.   FL   23   219    256    240     11
                                                                       Height 20           %.   FL   29   122    166    148     11
  range, photograph). Joubert 1981:5 (minor                            Base 20             %.   FL   27   101    156    128     11
  component of shore angler's catches; Natal,                          Height anal         r.   FL   27    91    155    135     14
  South Africa). Cressey et aI. 1983:264 (host-
                                                                       Base anal           r.   FL   27   111    143    126      9
                                                                       Snout (fleshy)      %.   FL   35    61     75     67      3
  parasite list, 5 copepod species). Collette and                      Snout (bony)        %.   FL   25    48     67     58      4
                                                                       Maxilla length      %0   FL   36    83    113     96      7
  Nauen 1983:73-74 (description, range), fig.                          Postorbital         %.   FL   36    81    107     94      6
                                                                       Orbital (fleshy)    r.   FL   37    22    139     34     19
                                                                       Orbital (bony)      r.   FL   27    33     60     45      8
Types. -Scomberomorus plurilineatus Fourma-                            Interorbital        r.   FL   36    46     67     56      4
                                                                       20-caudal           %.   FL   25   518    575    549     15
noir 1966 was based on a 740 mm specimen                             Head length                     37    31    159    104     37
collected near Nossi-Be, Madagascar, in 1965. The                      Snout (fleshy)      r.   HL   35   309    371    348     13
type was supposed to be transferred from the
                                                                       Snout (bony)        r.   HL   25   256    327    305     15
                                                                       Maxilla length      r.   HL   36   469    529    496     14
O.R.S.T.O.M. collections to the MNHN collec-                           Postorbital         r.   HL   36   413    527    485     23
                                                                       Orbit (fleshy)      r.   HL   37   121    769    179    104
tion but apparently was inadvertently discarded                        Orbit (bony)        %.   HL   27   178    276    231     27
(M.-L. Bauchot and P. Fourmanoir 7 ).                                  Interorbital        %.   HL   36   253    352    290     21
line, silver below becoming whitish ventrally. A        gill net prevails (Williams 1964). On the west
series of about six to eight interrupted horizontal     coast of Zanzibar a trap net called the mensab is
black lines on sides of body much narrower than         used to intercept fish on their projected paths of
interspaces. Anteriorly, usually only one of these      movements (Williams 1964). More recently, tuna
lines above lateral line; replaced posteriorly by a     purse seines are used in Zanzibar with catches of
number of short oblique black lines becoming            several tons reported off the northwest coast
somewhat confused, and only two or three con-           (Merrett and Thorp 1966). In Natal, South Africa,
tinue through to caudal peduncle. Horizontal            it is a popular gamefish with ski-boat fishermen
black lines on body interrupted to varying degrees,     and also with spearfishermen (van der Elst 1981).
beginning almost intact in places, but broken up
into a series of small rectangular "spots" in others.   Distribution. -Common in coastal waters, espe-
Juveniles have spots but develop adult pattern of       cially near rocky and coral reefs. Western Indian
interrupted lines by the time they reach a length       Ocean along the coast of East Africa from Kenya
of 400 mm (Smith 1964:177). Upper areas of caudal       (lat. 1 30' S) and Zanzibar (Williams 1964) to
                                                                 0
peduncle and median keel black, lower areas             Natal, South Africa (Fig. 58). The southernmost
dusky. First dorsal fin black except lower areas of     records are from Algoa Bay (Smith and Smith
membrane may be pale posteriorly. Second dorsal         1966). Also found in the Seychelles Islands (Smith
fin with leading edge and tips of rays dusky, rest      and Smith 1963) and along the west coast of
silver to pale; finlets dusky with a silver area at     Madagascar.
center. Anal fin, leading edges and tips of rays
dusky, rest silvery; finlets white with a dusky         Material examined. -Total 37 (165-910 mm FL).
central area. Pectoral fins black inside, as is axil;
dusky outside with edges black; pelvic fins pale        meas.:       37 (165-910): Natal, South Africa (25);
whitish with outside of midrays dusky, groove on                     Mozambique (1); Kenya (1); Zanzibar (10,
body a little dusky. Caudal fin basally pale, rest of                F. Williams' data).
fin dusky to black.                                     counts:      37.
   Black and white photographs of S. plurilineatus      diss.:       5 (490-910): South Africa (4); Kenya (1).
have been published by Williams (1960:pI. 2, 640
mm Zanzibar specimen) and Fourmanoir (1966:
fig. 1, 740 mm holotype from Madagascar). Illus-            Scomberomorus queenslandicus Munro
trations of a spotted 300 mm juvenile and two                        Queensland School Mackerel
adults over 1 m long were presented by Smith                                    Figure 64
(1964:pI. 8). A colored figure of the juvenile is
included in Smith and Smith (1966:fig. 841).            Cybium guttatum. Not of Bloch and Schneider
                                                          1801. Macleay 1880:559 (description; Port
Biology. -Large schools are present in the Zanzi-         Jackson, Australia). Ogilby 1887:30 (listed;
bar Channel from March-April until August-Sep-            Port Jackson).
tember, average weight 3.2-3.5 kg (Williams 1960).      Scomberomorus guttatus. Not of Bloch and
Angling statistics point to a peak abundance in           Schneider 1801. Waite 1904:42 (New South
Natal, South Africa, during May (van der Elst             Wales). Stead 1906:165-166 (N.SW.). Stead
1981). Spawning probably takes place in August-           1908:98 (description; N .S.W). McCulloch
September in the Zanzibar Channel (Williams               1922:105 (N.S.W). McCulloch 1929:264-265
1964). There do not appear to be any published            (range in part; Queensland, N.S.W).
references to eggs or larvae of S. plurilineatus.       Scomberomorus (CybiumJ queenslandicus Munro
This species feeds mainly on anchovies (Ancho-            1943:82-86 (original description; Queensland
viella sp.), clupeids (Amblygaster sp., Sardinella        and west Australia), pI. 7, fig. B, pI. 8, fig.
fimbrata, S. perforata), other small fishes, squids,      1. Coates 1950:24 (description), fig. Roughley
and mantis shrimps (Williams 1964; Merrett and            1951:110 (description), pI. 45, top fig. (after
Thorp 1966; van der Elst 1981).                           Munro). Jones and Silas 1962:202 (may turn
                                                          up in Indian waters), fig. 8 (after Munro).
Interest to fisheries. -In the Malindi area of            Jones and Silas 1964:61-62 (description, range),
Kenya, catches of S. plurilineatus are mainly             fig. 11 (after Munro). Taylor 1964:282 (listed
made by trolling and hand lines, while in the             after Whitley 1954). Marshall 1964:363-364
Zanzibar Channel all methods are used but the             (description; Qld.), pI. 49, fig. 350 A and B (after
654
COLLETTE and RUSSO: SPANISH MACKERELS
FIGURE 64.-Scomberomorus queenslandicus. Exmouth Gulf, Western Australia, 635 mm FL, USNM 268910.
 Munro). Marshall 1966:205 (Qld.), pI. 49, fig.             spots (larger than the diameter of the eye) on its
 350 A and B (after Munro). Richards and                    sides (Fig. 64). In having few gill rakers (3-9), it is
 Klawe 1972:14 (range), 94 (references to juve-             superficially similar to S. commerson but differs
 niles). Magnuson 1973:350 (short pectoral                  in lacking an abrupt downward curve in the
 fin). Kailola 1974:71 (description; Gulf of                lateral line under the second dorsal fin and in hav-
 Papua; range extension). Kailola 1975:237                  ing more vertebrae (48 or 49 vs. 42-46). Postero-
 (specimen in Kanudi Fisheries collection).                 dorsal spine of hyomandibula large as in S. com-
 Shiino 1976:231 (common name). Klawe 1977:                 merson and Acanthocybium. Ventral process of
 2 (common name; range). Kailola and Wilson                 angular long, 117-126% of dorsal process, as in
 1978:35 (trawled in Gulf of Papua), 60 (number             S. commerson and Acanthocybium. Intercalar
 of fin rays). Collette 1979:29 (characters,                spine well developed as in S. cavalla and S.
 range). Collette and Russo 1979:13 (diagnostic             commerson.
 characters, range). Grant 1982:624 (descrip-
 tion, fishery in S Qld.), 625 (color pI. 324).             Description. -Lateral line gradually descending
 Rainer and Munro 1982:1046 (inshore group,                 to midline on caudal peduncle. Intestine with two
 Gulf of Carpentaria), 1050-1051 (avoids low                folds and three limbs (Fig. 3m). Spines in first
 salinity areas in the southern Gulf). Cressey              dorsal fin 16-18, usually 17 (Table 9); second dorsal
 et aI. 1983:264 (host-parasite list, 5 copepod             fin rays 17-19 (Table 10); dorsal finlets 9-11, usu-
 species). Collette and Nauen 1983:74-75 (de-               ally 9 or 10 (Table 10); anal fin rays 16-20, usually
 scription, range), fig. Jenkins et aI. 1984:348-           19 (Table 11); anal finlets 9-11, usually 10 (Table
 351 (193 larvae, 3.5-9.9 mm SL; off Townsville,            11); pectoral fin rays 21-23, rarely 25 (Table 12).
 Qld.), fig. 4 (6 larvae, 3.6-9.5 mm SL).                   Precaudal vertebrae 19 or 20, usually 20 (Table 6);
Cybium queenslandicum. Whitley 1947:129 (W                  caudal vertebrae 28 or 29, usually 28 (Table 7);
 Australia). Whitley 1948:24 (W Australia).                 total vertebrae 48 or 49, usually 48 (Table 8). Gill
 Whitley 1954:27 (Parry Shoal, N. Territory).               rakers on first arch (0-2) + (3-8) = 3-9, usually
 Whitley 1964a:251-252 (description; W Aus-·                1+(5-6)=6-7 (Table 5). Morphometric characters
 tralia and N. Territory). Whitley 1964b:48                 given in Table 25.
 (listed).
Cybium queenslandicus. Munro 1958a:112 (de-                 Size. -Maximum size 100 cm FL, 8 kg in weight,
  scription, range), fig. 750 (after Munro). Grant          commonly 50-80 cm (Lewis 1981).
  1965:174 (description after Munro; Moreton Bay,
  Queensland), fig. Grant 1972:103, 1975:161,               Color pattern. -In his original description of the
  1978:194 (description after Munro; fishery in S           species, Munro (1943) provided a good description
  Qld.), fig.                                               of freshly caught specimens from Queensland.
                                                            Cranial regions and upper part of back iridescent
Types. -Holotype: QM 1.6588; Cape Cleveland, N              bluish green, cheeks and belly silvery white. In
Queensland, Australia; G. Coates; 463 mm FL; D              adult fish, sides marked with about three indefi-
XVII + 18+IX;A20+IX;P1 23;RGR1 1+ 1+4=6.                    nite rows of indistinct bronze-grey blotches, each a
                                                            little larger than orbit. Membrane of first dorsal
Diagnosis. -This species has relatively few large           fin jet black with large contrasting areas of
                                                                                                               655
                                                                                             FISHERY BULLETIN: VOL. 82, NO.4
   TABLE 25.-Summary of morphometric data of Scom-                  were described and illustrated by Jenkins et al.
   beromorus queenslandicus. FL = fork length, HL =                 (1984).
   head length.
differences were found between populations.                   Seomberomorus regalis. Jordan and Gilbert
                                                                1882:426 (description, synonymy). Jordan and
Material examined. - Total 35 (156-641 mm FL).                  Gilbert 1883c:573 (Seomberomorus plumierii
                                                                identical with Scomber regalis). Goode 1884:
meas.:     28 (156-641): New South Wales, Austra-               316 (size; Fla. Keys), pI. 94. Meek and Newland
           lia (5); Queensland (8, *S. queensland-              1884:233-234 (description, synonymy, range).
           icus); W Australia (9); New Guinea (5);              Jordan 1884:120 (description; Key West).
           Anbon market (1).                                    Dresslar and Fesler 1889:442 (in key), 444
counts:    35.                                                  (synonymy, range Cape Cod to Brazil), pI. 10.
diss.:     6 (354-641): Queensland (4); W Austra-               Jordan and Evermann 1896b:875 (description,
           lia (1); New Guinea (1).                             synonymy). Jordan and Evermann 1900:pl.
                                                                135, fig. 369 (Key West specimen). Evermann
                                                                and Marsh 1902:124 (description, synonymy in
          Scomberomorus regalis (Bloch)                         part; Puerto Rico), fig. 28. Jordan and Ever-
                         Cero                                   mann 1902:286-287 (description, range), fig.
                       Figure 65                                Bean 1903:398-400 (synonymy, description,
                                                                range). Fowler 1905:766 (description; Santo
Scomber regalis Bloch 1793:38-43 (original de-                  Domingo). Smith 1907:192 (diagnosis; North
  scription, after a drawing by Plumier; Martin-                Carolina record from Yarrow 1877), fig. 78.
  ique), color pI. 333. Bloch 1797:31-34 (French                Sumner et aI. 1913:750 (references, occurrence;
  translation of original description), color pI.               Buzzards Bay, Mass.). Ribeiro 1915:135 (de-
  333. Bloch and Schneider 1801:22 (description                 scription, range S to Angra dos Reis, Brazil).
  after Bloch). Shaw 1803:583 (after Bloch).                    Meek and Hildebrand 1923:323-324 (descrip-
  Lacepede 1803:711 (Scomberomore plumier is                    tion, synonymy). Schroeder 1924:7 (Fla. Keys),
  the same as Scomber regalis).                                 fig. 4. Nichols and Breder 1927:124 (descrip-
Seomberomorus Plumierii Lacepede 1802:292-294                   tion, distribution, biology), fig. 171. Frost
  (original description after Plumier's drawing;                1928:329-330 (sagittae), pI. 12, fig. 7 (sagitta).
  Martinique).                                                  Beebe and Tee-Van 1928:97 (description; Port-
Cybium regale. Cuvier 1829:200 (listed in foot-                 au-Prince Bay, Haiti), fig. Hildebrand and
  note from Se. regalis Bloch; Seomberomorus                    Schroeder 1928:205 (description, range in part,
  plumieri a synonym). Cuvier in Cuvier and                     biology; Chesapeake Bay), fig. 116. Nichols
  Valenciennes 1831:184-185 (description; Santo                 1929:230 (range, description; Puerto Rico), fig.
  Domingo). Castelnau 1855:23 (Bahia, Brazil).                  83. Beebe and Hollister 1935:213 (Union I.,
  Gunther 1860:372-373 (synonymy, description;                  Grenadines). Hubbs 1936:253 (description of 4
  Jamaica). Poey 1865:322 (description; Santo                   juveniles, 36-50 mm, from Yucatan). Baugh-
  Domingo). Kner 1865:144 (description; Rio de                  man 1941:17-18 (Texas records). Munro 1943:
  Janeiro). Poey 1868:362 (description; Cuba).                  67, 71-72 (placed in subgenus Seomberomo-
  Poey 1875:147 (description; Cuba). Poey 1878:                rus). Fowler 1945:186 (synonymy, description;
  4 (synonymy, characters).                                     Charleston, S.C.), 290 (Florida). La Monte
FIGURE 65.-Scomberomorus regalis. Key West, Fla., 625 mm FL, USNM 12527. (From Goode 1884:pl. 94.)
                                                                                                                    657
                                                                               FISHERY BULLETIN, VOL. 82, NO.4
 1945:28 (description, range). Breder 1948:            Bloch (color pI. 333) leaves no doubt as to the
 127 (range), fig. Erdman 1949:301 (frequently         identity ofthe species.
 found in the West Indies). Fraser-Brunner
 1950:160 (synonymy in part, range), fig. 32.          Diagnosis.-The only species of Scomberomorus
 Baughman 1950:244 (previous Texas records).           that has a stripe on its sides (which may be broken
 Rivas 1951:225 (synonymy, diagnosis, range).          into several segments) with small dots above and
 La Monte 1952:50-51 (description, range).             below the stripe (Fig. 65). Other species have
 Bigelow and Schroeder 1953:348 (description;          lines, spots, blotches, or bars, or are plain. Scom-
 one record from Gulf of Maine, Monomoy, Cape          beromorus regalis possesses nasal denticles as do
 Cod), fig. 183. Pew 1954:26, 28 (description,         the other five species of the regalis group (brasil-
 range, habits; 3-ft specimen from Port Aransas,       iensis, concolor, maculatus, sierra, and tritor),
 Tex.), fig. 24. * Erdman 1956:317 (range,             has an artery that comes off the fourth left
 spawning periods; Puerto Rico). Briggs 1958:          epibranchial artery as do all the species in the
 286 (range). * Mago Leccia 1958 (osteology,           group except S. tritor, and shares a specialization
 comparisons with S. maculatus and S. cavalla),        of the fourth right epibranchial artery (Fig. 7g)
 figs. Cervigon 1966:720-721 (description; Ven-        with S. brasiliensis and S. sierra. In these three
 ezuela). *Randall 1967:754 (food of 116 West          species an artery connects the fourth right epi-
 Indian specimens, 96.1% fishes). Bohlke and           branchial with a branch ofthe coeliaco-mesenteric
 Chaplin 1968:573 (description, range), fig.           artery. Together with three other species of the
 Randall 1968:117-118 (description, range, hab-         regalis group (brasiliensis, concolor, and sierra),
 its), fig. 134 (photograph of Virgin Is. specimen).   S. brasiliensis has a long posterior process on the
 Beardsley and Richards 1970:5 (length-weight          pelvic girdle (Fig. 46a), 62-90% of the length ofthe
 of 58 specimens, 213-835 mm FL, 0.13-4.88 kg;         anterior plate. Intercalar spine absent as in the
 Florida). Dahl 1971:278 (common in Colom-             other five species of the regalis group and S.
 bia), fig. Richards and Klawe 1972:14 (range),        niphonius. Pectoral fin covered with scales.
 94 (reference to Hubbs 1936). Miyake and
 Hayasi 1972:111-3 (in key), IV-ll (common             Description. -Lateral line gradually descending
 names). Klawe 1977:2 (common name, range).            to midline on caudal peduncle. Intestine with two
 Erdman 1977:150 (spawn virtually all year; NE         folds and three limbs (Fig. 3n). Spines in first
 Caribbean). Collette et al. 1978:274-275 (com-        dorsal fin 16-18, usually 17 (Table 9); second dorsal
 parison with other American species of Scom-          fin rays 16-19, usually 17 or 18 (Table 10); dorsal
 beromorus ). Fritzsche 1978:133-135 (descrip-         finlets 7-9, usually 8 (Table 10); anal fin rays 15-
 tion, larval development), figs. 75-76 (larvae).      20, usually 18 or 19 (Table 11); anal finlets 7-10,
 Collette 1978:Scombm 6 (description, range),          usually 8 (Table 11); pectoral fin rays 20-24,
 figs. Lima and Oliveira 1978:13, 24 (common           usually 21 or 22 (Table 12). Precaudal vertebrae 19
 name "sierra-penincho" in Brazil). Manooch            or 20, usually 20 (Table 6); caudal vertebrae 28
 et al. 1978 (annotated bibliography). Collette        (Table 7); total vertebrae 47 or 48, usually 48
 1979:29 (characters, range). Collette and             (Table 8). Gill rakers on first arch (2-4) + (10-
 Russo 1979:13 (diagnostic characters, range).         14) = 12-18, usually 3 + (12-13) = 15-16 (Table 5).
 Sacchi et al. 1981:3 (French Antilles). Koster        Morphometric characters given in Table 26.
 1981:55 (Isla Rosario, Colombia). Cooper 1982
 (fishery in Jamaica). Cressey et aI. 1983:264         Size. -Maximum size 83.5 em FL, 4.9 kg (Beards-
 (host-parasite list, 7 copepod species). Garzon       ley and Richards 1970). Sexual maturity in Flor-
 and Acero 1983:18 (Isla Providencia, Colombia).       ida is attained at about 350 mm FL for males, 380
  Collette and Nauen 1983:75-76 (description,          mm for females (Finucane and Collins 1984).
 range), fig. Finucane and Collins 1984 (repro-
 ductive biology, Fla.).                               Color pattern. -Bluish green on back, sides sil-
                                                       very, with a midlateral row of yellow streaks of
Types of nominal species. -Both Scomber regalis        variable length and small yellow spots above and
Bloch 1793 and Scomberomorus plumierii La-             below this row (Randall 1968). Distal part of
cepede 1802 are based on Plumier's drawing of a        anterior lobe of first dorsal fin black, rest of fin
specimen from Martinique, and there are no             white.
known type-specimens extant. The pattern of              Bloch (1793:pl. 333) included a color plate in his
spots and lines in the color plate published by        original description of Scomber regalis. There is a
658
COLLETTE and RUSSO: SPANISH MACKERELS
   TABLE 26.-Summary of morphometric data of                      Scom-   Interest to fisheries. -Taken commercially with
   beromorus regalis.          FL   =   fork length,     HL   =    head   gill nets and on lines in Florida, the West Indies,
   length.
                                                                          and the Bahama Islands. Also a valued spo~tfish
       Character                    N      Min.   Max.    Mean      SO
                                                                          taken by trolling with cut bait. It is taken by
   Fork length                      53      77    544     329       121
     Snout-A             %.,   FL   53     509    583     548        14
                                                                          trolling and with hooks baited with live bait in
     Snout-20            r.    FL   53     489    560     520        14   Jamaica (Cooper 1982). Only 76-106 t identified as
     Snout-1D            %.,   FL   53     226    285     254        11
     Snout-P,            r.    FL   49     210    306     264        16   S. regalis were reported from Fishing Area 31
     Snout-P,            r.    FL   53     195    286     233        16   (Western Central Atlantic) in 1979-82, all from the
     P,-P,               %.,   FL   50      96    128     109         7
     Head length         %.,   FL   53     190    258     222        11   Dominican Republic (FAO 1984), but the actual
     Max. body depth     %.,   FL   49     113    231     197        18
     Max. body width     r.    FL   45      56    176      91        18
                                                                          catch is higher because an additional 985-1,108 t of
     P, length           %.,   FL   51      87    166     125        12   unidentified Scomberomorus was also reported
     P,length            %.,   FL   49      40     63      55         5
     P2 insertion-vent   %.,   FL   50     238    304     267        16
                                                                          from this area and this is S. caualla and S. regalis.
     P, tip-vent         r.    FL   48     187    252     210        17
     Base 10             %.,   FL   53     227    283     258        12
     Height 20           %.,   FL   45      75    145     115        11   Distribution. ~Most abundant in clear waters
     Base 20             %.,   FL   53      94    135     116         9   around reefs in southern Florida, the Bahamas,
     Height anal         r.    FL   44      84    138     112        10
     Base anal           %.,   FL   53      89    130     111        10   and West Indies (Fig. 49), but there are scattered
     Snout (fleshy)      %.,   FL   53      72     98      86         5   records from Cape Cod to Brazil. The northern-
     Snout (bony)        r.    FL   52      64     88      78         5
     Maxilla length      %.,   FL   53     105    145     123         7   most records appear to be Monomoy at the south-
     Postorbital         r.    FL   52      87    128      97         6
                                                                          ern elbow of Cape Cod (Bigelow and Schroeder
     Orbital (fleshy)    %.,   FL   53      31     63      40         6
     Orbital (bony)      %.,   FL   53      40     73      55         6   1953:348) and Buzzards Bay on the south shore of
     Interorbital        %.,   FL   53      49     64      58         3
     20-caudal           %.,   FL   51     416    509     480        23   Cape Cod (Sumner et al. 1913). There are also
   Head length                      53      20    119      72        25   records from Chesapeake Bay (Hildebrand and
     Snout (fleshy)      r.    HL   53     357    426     390        16
     Snout (bony)        %.,   HL   52     316    383     351        17   Schroeder 1928) and further south along the
     Maxilla length      roo   HL   53     528    606     556        15   Atlantic coast of the United States. Several au-
     Postorbital         %.,   HL   52     376    569     440        26
     Orbit (fleshy)      roo   HL   53     150    248     178        20   thors have reported occurrences in Texas (Baugh-
    Orbit (bony)         r.    HL   53     199    292     247        21
                                                                          man 1941, 1950; Pew 1954). Reports are scattered
     Interorbital        roo   HL   53     220    286     262        13
                                                                          from the northern coast of South America-Isla
                                                                          Providencia, Colombia (Garzon and Acero 1983);
good black and white photograph of a 400 mm                               Colombia (Dahl 1971; USNM 94766), Venezuela
specimen from the Virgin Islands in Randall                               (Cervigon 1966; USNM 123081). The southern end
(1968:fig. 134) and a small color photograph in                           of the range is apparently about at Rio de Janeiro
Walls (1975:fig; 410). The drawing published by                           (Ribeiro 1915; BMNH 1903.6.9.80).
Goode (1884:pl. 94) is included here as Figure 65.
                                                                          Material examined. -Total 60 (76.5-544 mm FL).
Biology. -Little is known about migrations or
movements of S. regalis. Young adults are taken                           meas.:    53 (76.5-544): Florida (3); Bahamas (6);
throughout the year in small numbers over the                                       Cuba (5); Hispaniola (3); Jamaica (4);
Jamaica shelf (Cooper 1982). Around Puerto Rico,                                    Puerto Rico (2); Virgin Is. (13); Antigua
spawning takes place virtually all year (Erdman                                     (1); St. Eustatius (2); Martinique (1);
1977). Spawning takes place from April to October                                   Barbados (5); Colombia (1); Curacao (1);
at California Bank, south of Jamaica (Cooper                                        Venezuela (1); Brazil (3); Mexico (1).
1982). The majority offish appeared to be sexually                        counts:   60.
mature during most of the period between August                           diss.:    5 (456-544): Florida (2); Bahamas (3).
and October in the coastal waters of southern
Florida (Finucane and Collins 1984). Fecundity
estimates for 20 females 380-800 mm FL ranged                                 Scomberomorus semifasciatus (Madeay)
from 161,000-2,234,000 (Finucane and Collins                                     Broad-barred Spanish Mackerel
1984). The only published reference to eggs and                                                Figure   66
larvae is by Fritzsche (1978:133-135) based on C.
A. Mayo's Ph.D. thesis. Food in the West Indies is                        Cybium semifasciatum Macleay 1884a:205-206
96% fishes, particularly small schooling clupeoids                         (original description; Burdekin R., Queensland).
(Harengula, Jenkinsia, and Opisthonema) and                                Macleay 1884b:28 (Burdekin R.). Whitley
atherinids (Allanetta) but also including squids                           1936:40-42 (description in part; AMS IA.1598
and shrimps (Randall 1967).                                                and IA.6573 = S. queenslandicus (Munro 1943:
                                                                                                                           659
                                                                                         FISHERY BULLETIN: VOL. 82, NO.4
FIGURE 66.-Scomberomorus semifasciatus. Queensland, 451 mm FL. (From Munro 1943:pl. 6A.)
  95); C. tigris a synonym of S. semifasciatum);              vae, 3.3-10.5 mm SL; off Townsville, Qld.), fig. 2
  fig. 3 (holotype of C. semifasciatum), fig. 4               (6 larvae, 3.8-10.5 mm SL).
  (holotype of C. tigris).                                  Indocybium semifasciatus. Fraser 1953:6 (abun-
Cybium tigris De Vis 1884:545 (original descrip-              dant along NW coast of Western Australia).
  tion; Cape York).                                         Indocybium semifasciatum. Whitley 1947:129
Scomberomorus semifasciatum. McCulloch and                    (Western Australia). Whitley 1948:24 (W.
  Whitley 1925:142 (Burdekin R.; after Macleay                Australia). Whitley 1954:27 (between Darwin
  1884a, b).                                                  and Pt. Charles, Northern Territory). Munro
Scomberomorus tigris. McCulloch and Whitley                   1958a:112 (description, range), fig. 752. Whit-
  1925:142 (Cape York; after De Vis 1884).                    ley 1964a:252 (description, range in part; ma-
  McCulloch 1929:265 (Cape York; after De Vis                 terial from Qld., N. Territory, W. Australia).
  1884).                                                      Whitley 1964b:48 (listed). Grant 1965:173
Scomberomorus semifasciatus. McCulloch 1929:                  (description after Munro), fig. Grant 1972:
  264 (Burdekin R.; after Macleay 1884). *Mun-                106, 1975:164, 1978:194 (description after Mun-
  ro 1943:91-95 (description, range, synonymy),               ro; fishery in Qld.), fig.
  pI. 6A (451 mm FL specimen from Mackay Dist.,
  N Queensland), fig. 4 (45 and 58 mm juvs.,                Types of nominal species. -Cybium semifascia-
  Townsville, N Qld.). Coates 1950:23 (descrip-             tum Macleay 1884a. Holotype: AMS 1.18288;
  tion), fig. Fraser-Brunner 1950:159 (descrip-             lower Burdekin River, Queensland, Australia; A.
  tion, range and synonymy in part). Roughley               Morton; Aug. 1883; 285 mm FL; D ? + 20 + VIII; A
  1951, 1953:110-111 (description), pI. 45, fig. C          21 + VI~I; P l 24-24; RGR l 2 + 1 + 6 = 9; vertebrae
  (after Munro). Jones and Silas 1964:57-58 (de-            19+26=45.
  scription, range), fig. 10 (after Munro). Taylor             Cybium tigris De Vis 1884. Holotype: QM
  1964:282 (description, references, specimens              1.119; Cape York, Queensland, Australia; K.
  from Nightcliffe, N. Territory). Marshall                 Broadbent; 286 mm FL; D XIV + 19 + IX; A 21 +
  1964:365-366 (description; Qld.), pI. 50, figs. 350       IX; P l 24-24; RGR l 2 + 1 + 7 = 10.
  A & B (after Munro). Marshall 1966:205
  (Qld.), pI. 50, figs. 350 A & B (after Mun-                Diagnosis. -This species has wider lateral keels
  ro). Richards and Klawe 1972:14 (range), 95                on the caudal peduncle than other species in the
  (references to juveniles). Magnuson 1973:350               genus, but this is difficult to quantify and so is not
  (short pectoral fin). Kailola 1975:237 (3 collec-          a very useful diagnostic character. Superficially
  tions from Gulf of Papua in Kanudi Fisheries               similar to S. commerson in having prominent
  collection). Shiino 1976:231 (common name).                vertical bars on the sides (specimens over 700 mm
  Klawe 1977:2 (common name, range). Collette                FL lose their bars), but the bars are much wider
  1979:29 (characters, range). Collette and                  (Fig. 66) than the many narrow bars of S. commer-
  Russo 1979:13 (diagnostic characters, range).              son. Also differs in lacking an abrupt downward
  Grant 1982:630 (description, fishery in Qld.),             curve in the lateral line under the second dorsal
  631 (color pI. 328). Cressey et aI. 1983:264               fin, in having fewer spines in the first dorsal fin
  (host-parasite list, 5 copepod species). Collette          (15 or fewer vs. usually 16 or 17), and in having
  and Nauen 1983:76-77 (description, range),                 more gill rakers on the first arch (6-13, usually 9
  fig. Jenkins et aI. 1984:345, 348-351 (101 lar-            or more vs. 1-8, usually 6 or less). Palatine tooth
660
COLLETfE and RUSSO: SPANISH MACKERELS
patch wider (Fig. 26a) than in any other species                   Queensland. Juveniles « 100 mm) with cranial
of Scomberomorus. Posterior end of maxilla ex-                     regions and upper regions of the back pale green
panded (Fig. 23a) as in S. lineolatus and S.                       with a bronze sheen and marked with 12-20 broad
plurilineatus.                                                     vertical dark grey bands. Bars confined to region
                                                                   of body above lateral line, number increasing with
Description. -Lateral line gradually descending                    age. Cheeks and belly silver white. Snout dark
to midline on caudal peduncle. Intestine with two                  slate grey, patch of green above orbit. First dorsal
folds and three limbs (Fig. 30). Spines in first                   fin jet black with contrasting areas of white in
dorsal fin 13-15, usually 14 or 15 (Table 9); second               central region. Second dorsal fin cream with
dorsal fin rays 19-22, usually 20 (Table 10); dorsal               yellow anteriorly. Anal fin and finlets transparent
finlets 8-10, usually 9 (Table 10); anal fin rays 19-              white. Caudal flukes creamy white at margins
22, usually 21 or 22 (Table 11); anal finlets 7-10,                and dusky or blackish near hypuraI. Pectoral fins
usually 8 or 9 (Table 11); pectoral fin rays 22-25,                dusky.
usually 23 or 24 (Table 12). Precaudal vertebrae                      With increase in size the bronze-green colora-
18 or 19, usually 19 (Table 6); caudal vertebrae 25-               tion of the back turns greenish blue. The vertical
27, usually 26 (Table 7); total vertebrae 44-46,                   bands on the back are most marked in specimens
usually 45 (Table 8). Gill rakers on first arch                    < 500 mm and in larger fish there is a tendency for
(1-2) + (5-11) = 6-13, usually 2 + (7-9) = 9-10 (Ta-               these markings to become less distinct, break into
ble 5). Morphometric characters given in Table 27.                 spots or fade out more or less completely. Above
                                                                   700 mm, dead fish assume a drab greyish-yellow
Size.-Maximum size 120 cm FL, 10 kg (Lewis                         blotchy appearance with little or no evidence of
1981).                                                             markings. This uniform grey color apparently
                                                                   accounts for the vernacular "grey mackerel" of
Color pattern. -Munro (1943) provided good de-                      Queensland fishermen as applied to older age
scriptions ofthe colors ofjuveniles and adults from                groups of the species.
                                                                      Munro included excellent illustrations of a 451
                                                                   mm specimen and a 140 mm juvenile in his 1943
   TABLE 27.-Summary of morphometric data of Scom-                 paper (pI. 6, 8). The illustration of the larger
   beromorus semifasciatus. FL = fork length, HL = head            individual has been reproduced in Grant (1982
   length.                                                         and previous editions) and herein (Fig. 66). There
       Character                   N    Min.   Max.   Mean   SD    is a color photograph of a 470 mm specimen in
   Fork length                     31   142    840    344    217   Grant (1982:pI. 328).
     Snout-A             %.   FL   31   477    533    505     16
     Snout-2D            %.   FL   31   452    495    472     11
     Snout-1D            %.   FL   30   212    261    245     12   Biology. - Little is known of the biology of this
     Snout-P2            %.   FL   29   195    273    249     18
     Snout-P,            %.   FL   31   183    248    219     15   species other than it forms small schools. Juve-
     P,-P2               %.   FL   29    85    116    104      7   niles ranging in size from 45 to 100 mm are
     Head length         %.   FL   31   180    236    212     14
     Max. body depth     %.   FL   29   190    231    210     10   common along the beaches in the vicinity of
     Max. bOdy width     %.   FL   29    71    121     94     13
     P, length           %.   FL   30   132    166    147     10
                                                                   Townsville, Queensland, during November and
     P21ength            %.   FL   28    36     59     50      6   grow to twice this size by January (Munro 1943).
     P2 insertion-vent   %.   FL   22   198    271    237     13
     P2 tip-vent         %.   FL   19   168    210    187     10   Larvae (3.3-10.5 mm SL) were described and
     Base 10             %.   FL   30   170    236    210     14   illustrated by Jenkins et aI. (1984).
     Height2D            %.   FL   25   112    177    160     13
    Base2D               %.   FL   30   119    211    138     18
    Height anal          %.   FL   23   135    220    156     17   Interest to fisheries. -Fish of 60-90 cm are caught
    Base anal            %.   FL   29   124    168    145     11
     Snout (fleshy)      %.   FL   30    72     89     81      4   on fishing grounds north of Yeppoon, Queensland,
     Snout (bony)        %.   FL   30    63     80     72      4
     Maxilla length      %.   FL   30    92    134    118     11
                                                                   in November while smaller age groups are caught
     Postorbital         %.   FL   29    84    109     95      6   in estuaries along the Queensland coast north of
    Orbital (fleshy)     %.   FL   30    23     48     35      7
    Orbital (bony)       %.   FL   31    34     63     51      8
                                                                   Moreton Bay (Munro 1943). It is taken by setnet-
    Interorbital         %.   FL   31    48     80     56      5   ting as well as by trolling and is popularly fished
    2D-caudal            %.   FL   25   470    565    518    34
   Head length                     31    33    156     70    39    by Queensland anglers in small outboard-powered
    Snout (fleshy)       %.   HL   30   355    409    379    17    boats trolling with small lures or cut bait (Grant
    Snout (bony)         %.   HL   30   289    409    340    26
     Maxilla length      %.   HL   30   496    596    554    21    1982). Together with Grammatorcynus and three
     Postorbital         %.   HL   29   385    486     448   24
    Orbit (fleshy)       %.   HL   30   122    202    162    24
                                                                   other species of Scomberomorus, mackerel fishing
     Orbit (bony)        %.   HL   31   176    269    237    24    is Queensland's second major finfishery with an
     Interorbital        %.   HL   31   242    357    266    20
                                                                   annual output of about 1,000 tons of whole and
                                                                                                                   661
                                                                                         FISHERY BULLETIN: VOL. 82, NO.4
filleted fish (Anonymous 1978). Also trawled in                Scomberomorus sierra Jordan and Starks
the Gulf of Papua.                                                              Sierra
Distribution. -This is the most estuarine of the                                     Figure 67
species of Scomberomorus in Australia. It is
confined to estuarine and coastal waters of north-          8comberomorus maculatus. Not ofMitchill 1815.
ern Australia from Shark Bay, Western Australia,              Jordan and Gilbert 1882:426 (in part; E. Pacific).
through the Northern Territory, and Queensland                Jordan and Gilbert 1883a:106 (Mazatlan). Jor-
to northern New South Wales (Whitley 1964a:252,               dan and Gilbert 1883b:110 (Panama). Meek
fig. 5f; Lewis 1981:17) and southern Papua New                and Newland 1884:234 (synonymy in part; E.
Guinea (Fig. 55). Reports ofspecimens collected by            Pacific). Dresslar and Fesler 1889:443 (synon-
D. G. Stead from Thailand and Malaya (Whitley                 ymy in part; E. Pacific). Evermann and Jen-
1964a:252) are based on misidentifications.                   kins 1891:128 (not previously reported N of
                                                              Mazatlan), 137 (important food fish; Guaymas,
Geographic variation. -Comparisons of morpho-                 Mexico). Meek and Hildebrand 1923:324-325
metric characters for three small samples of 8.               (in part; Pacific coast of Panama; 8. sierra
semifasciatus were made with ANCOVA: Queens-                  considered a synonym of 8. maculatus). Herre
land (n = 3-4), Northern Territory (n = 3-5), and             1936:105 (description, several specimens; Albe-
New Guinea (n = 13-22). Null hypotheses that the              marle 1., Galapagos; 8. sierra considered a
3 sets of regression lines are coincident were                synonym of 8. maculatus). Fowler 1938:30-31
accepted for 23 sets, rejected for 3 sets: Base               (synonymy in part, description; specimen from
1D, orbit (fleshy), and orbit (bony). The New-                Charles 1., Galapagos). Hildebrand 1946:376-
man-Keuls Multiple Range Test showed that the                 377 (synonymy in part; 14 specimens, 100-606
Queensland and New Guinea populations differed                mm SL, from Gulf of Guayaquil; comparison of
significantly from each other in Base ill (slopes             Atlantic and Pacific populations, "... at most
0.256 and 0.211, Q = 4.392**) and that the New                different races for the opposite coasts"). Fra-
Guinea population differed from the Northern                  ser-Brunner 1950:159 (8. sierra considered a .
Territory population in fleshy orbit (slopes 0.020            synonym of8. maculatus). Bini and Tortonese
and 0.030, Q = 5.492**) and bony orbit (slopes                1955:32 (specimens from several localities in
0.034 and 0.046, Q = 7.523**).                                Peru). Ricker 1959:13 (Petalco Bay and San
                                                              BIas I., Mexico). Castro-Aguirre et a1. 1970:
Material examined.-TotaI34 (142-840 mm FL).                   156 (Gulf of California). Sanchez T. and Lam
                                                              C. 1970:58-59 (length-weight; weights of body
meas.:    31 (142-840): Queensland, Australia (4,             parts; diagram of vertebral column, 19 + 28 =
          *C. semifasciatus, *8. tigris); N. Terri-           47); photograph. Leon 1973:22 (Puntarenas,
          tory, Australia (5); New Guinea (22).               Costa Rica). Amezcua-Linares 1977:10 (lagoon
counts:   33.                                                 system; Sinaloa, Mexico). Kong 1978:6-9 (An-
diss.:    6 (406-840): New Guinea.                            tofagasta, Chile). Yafiez-Arancibia 1980:111-
FIGURE 67. -Scomberomorus sierra. Gulf of California, 354 nun FL, USNM 217368.
662
COLLETIE and RUSSO: SPANISH MACKERELS
  112 (Guerrero, Pacific coast of Mexico), pI. 29,       1957:306 (specimens taken with bait net and
  fig.!.                                                 night light; Panama, Nicaragua). Collette et
Scomberomorus sierra Jordan and Starks in Jor-           aI. 1963:53-54 (594 mm FL specimen, La Jolla,
  dan 1895:428-429 (original description; Mazat-         first California record, comparison with S. con-
  lan, Mexico; also found in Panama). Jordan             color), fig.!. Clemens and Nowell 1963:260 (19
  and Evermann 1896a:341 (listed). Jordan and            stations, Gulf of California, off Baja California,
  Evermann 1896b:874-875 (description). Jor-             Mexico, Costa Rica, Gulf of Panama, Gulf of
  dan and Evermann 1902:286 (description). Gil-          Guayaquil). Fitch and Craig 1964:202 (sagitta
  bert and Starks 1904:68-69 (description; Pan-          similar to that of S. concolor). Quiroga and
  ama Bay; comparison with S. maculatus).                Orbes 1964 (fishery; Esmeraldas Prov., Ecua-
  Snodgrass and Heller 1905:360 (Albemarle I.,           dor). Klawe 1966:445-451 (occurrence ofyoung
  Galapagos). Starks 1910:89-90 (osteology, ver-         and spawning; E. Pacific), fig. 2 (11 mm speci-
  tebrae 19 + 30 = 49). Kendall and Radcliffe            mens). Fierstine and Walters 1968:4 (locali-
  1912:96 (2 specimens from Panama Bay; de-              ties), 12 (aspect ratio of caudal fin; vertebral
  scription). Osburn and Nichols 1916:158 (Agua          counts), fig. 12D (caudal fin complex). Lindsey
  Verde Bay; Gulf of California). Evermann and           1968:1988-1990 (muscle temperature 1.15°C
  Radcliffe 1917:55-56 (synonymy, description;           higher than surface water temperature). Ma-
  specimen from Paita, Peru). Starks 1918:120-           tsumoto 1968:309-310 (jaw development com-
  121 (description, occurrence), fig. 64. Higgins         pared with that in Acanthocybium). Wollam
  1920:33-34 (imported to San Diego from Mex-            1970:22 (larval differences between S. macula-
  ico). Craig 1926:167 (used locally; Calexico,          tus and S. sierra warrant recognition of S.
  Mexico). Ulrey 1929:6 (Gulf of California).            sierra). Erdman 1971:68 (gonads ripe late
  Jordan et aI.1930:257 (listed). Croker 1933:14-        Aug. to end of Nov., Gulf of Nicoya, Costa Rica;
  15 (fishery), fig. 3, fig. 59 (yearly deliveries to    S. sierra distinct from S. maculatus). * Artun-
  San Diego and San Pedro by California boats            duaga Pastrana 1976 (species synopsis, Colom-
  fishing off Baja California). Breder 1936:11           bia). Miller and Lea 1972:192 (description,
  (specimen taken by second "Pawnee" expedi-             range), fig. Richards and Klawe 1972:14
  tion). Walford 1937:24-25 (description, range,          (range), 95 (references to larvae and juveniles).
  angling notes), color pI. 39. Seale 1940:16-17         Magnuson 1973:350 (short pectoral fin). Sharp
  (taken along the coast of Mexico and in the            1973:384 (electrophoretic patterns of hemoglo-
  Galapagos Is.). Munro 1943:67, 71-72 (placed            bin the same as in S. concolor). Shiino 1976:
  in subgenus Scomberomorus). Fowler 1944:                231 (common name). Thomson and McKibbin
  172-173 (synonymy, description, specimen from           1976:46 (description; Gulf of California), fig.
  Balboa Harbor, Panama). Nichols and Mur-               Klawe 1977:2 (common name, range). Collette
  phy 1944:240 (Bay of Malaga, and Buenaven-             et aI. 1978:274-275 (comparison with S. brasil-
  tura, Colombia; more spots than in S. macu-             iensis and other American species of Scornber-
  latus). La Monte 1945:29 (common names,                omorus). Horn and Allen 1978:41 (California
  range). Eckles 1949:247-250 (description of 12          range lat. 33°N to 32°N). Collette 1979:29
  juveniles, 21-71 mm FL, 9 from Costa Rica, 3            (characters, range). Collette and Russo 1979:
  from the Gulf of California; vertebrae (19-20) +        13 (diagnostic characters, range). Phillips
  28= (47-48), fig. 2 (21 mm specimen), fig. 3 (71        1981:54 (EI Salvador). Cressey et ai. 1983:264
   mm specimen). Fitch and Flechsig 1949:278              (host-parasite list, 3 copepod species). Collette
   (compared with S. concolor). Fitch 1950:70             and Nauen 1983:77-78 (description, range), fig.
  (comparison of17 S. sierra with 30 S. concolor).      Cybium concolor. Not of Lockington, 1889.
  Clothier 1950:52-53 (vertebrae 47-49), pI. X            Boulenger, 1899:3 (Golfe de Panama).
  (outline of axial skeleton). Roedel 1951:510          Scomberomorus maculatus sierra. Chirichigno
   (comparison with S. concolor). Mead 1951:121           1969:75 (common names, Ecuador, Peru, and
   (2 ripe females, Gulf of California). Roedel           Chile). Chirichigno 1974:325 (in key), fig. 641,
   1953:85 (Mexican species; California records of        349 (range-S. Calif. to Bahia de Pisco, Peru
   S. sierra probably refer to S. concolor). Clem-         and Galapagos Is.).
   ens 1956:76, 78 (14 postlarvae, 12-22 mm SL,
   caught at lat. 08°06'N, long. 79°06'W; 2 sur-        Types. -The original description was based on at
   vived in shipboard aquaria for 13 d), fig. 2         least two specimens: "Types, 1720, L. S. Jr. Univ.
   (postlarvae 16.5 and 54.0 mm SL). Clemens            Mus.; the largest 24 inches long" (Jordan 1895:
                                                                                                       663
                                                                                                                          FISHERY BULLETIN: VOL. 82, NO.4
429). Bohlke (1953:105) considered SU 1720 to be                                    ra has a longer pelvic fin (Fig. 48) than does S.
the holotype of the species but there is a specimen                                 brasiliensis (4.7-6.4% FL vs. 3.6-5.9%) and lacks
in the British Museum (BMNH 1895.5.24.104)                                          the lateral stripe that is the diagnostic feature of
which is also labelled as "type". To clarify the                                    the pigment pattern of S. regalis. Together with
issue, we hereby select CAS SU 1720 as lectotype:                                   three other members ofthe regalis group, S. sierra
Mazatlan, Mexico; D. S. Jordan; 332 mm FL; D                                        has a long posterior process on the pelvic girdle,
XVIII+17+IX; A 19+VIII; PI 22; RGR I 4+1                                            62-90% of the length of the anterior plate. Dif-
+ 11 = 16; 3 rows of faint small spots visible on                                   fers from S. brasiliensis by having distinct pterot-
both sides in 1962, size of spots about equal to                                    ic spines. Intercalar spine absent as in the other
half diameter of eye. Paralectotype: BMNH                                           five species of the regalis group and S. niphoni-
1895.5.24.104; Mazatlan, Mexico; D. S. Jordan; tin                                  us.
tag with no. 1720 attached to specimen; 550 mm
FL; D XVII + 17+ IX; A 16+1X; PI 21-22; LGRI                                        Description.-Lateralline gradually descending
3 + 1 + 10 = 14; 3 rows of spots on sides.                                          to midline on caudal peduncle. Intestine with two
                                                                                    folds and three limbs (Fig. 3p). Spines in first
Diagnosis. -This species possesses nasal denti-                                     dorsal fin 15-18, usually 17 or 18 (Table 9); second
cles (Fig. la, b) as do the other five species of the                               dorsal fin rays 16-19, usually 17 or 18 (Table 10);
regalis group (brasiliensis, concolor, maculatus,                                   dorsal finlets 7-10, usually 8 or 9 (Table 10); anal
regalis, and tritor), has an artery branching off                                   fin rays 16-21, usually 18-20 (Table 11); anal finlets
the fourth left epibranchial artery as do all the                                   7-10, usually 8 or 9 (Table 11); pectoral fin rays 20-
species in the group except S. tritor, and shares a                                 24, usually 21 (Table 12). Precaudal vertebrae 19-
specialization of the fourth right epibranchial                                     21, usually 20 (Table 6); caudal vertebrae 26-29,
artery (Fig. 7e) with S. brasiliensis and S. regalis.                               usually 28 (Table 7); total vertebrae 46-49, usu-
In these three species, an artery connects the                                      ally 48 (Table 8). Gill rakers on first arch (2-4) +
fourth right epibranchial with a branch of the                                      (9-14)= 12-17, usually 3+ (12-13)= 15-16 (Table 5).
coeliaco-mesenteric artery. Scomberomorus sier-                                     Morphometric characters given in Table 28.
TABLE 28. -Summary of morphometric data of Scomberomorus sierra. FL = fork length, HL = head length.
    Character                   N    Min.   Max. Mean      SO    N    Min.   Max. Mean      SO    N    Min.    Max. Mean SO         N    Min.   Max. Mean     SO
Fork length                     36   163     615     344   139   21    98     596     349   154   14    180     266      226   22   97    68    621     340   139
  Snout-A             %.   FL   35   518     565     539    13   21   519     560     536    12   14    510     562      526   13   95   510    616     537    17
  Snout-20            %.   FL   35   496    534      513    10   21   466     529     507    14   14    489     511      504    6   95   466    586     510    14
  Snout-l0            %.   FL   36   222    268      245    13   21   221     266     242    12   14    216     251      237   11   97   213    276     241    14
  Snout-P,            %.   FL   36   224    297      255    18   20   238     286     257    15   14    250     264      257    5   96   198    330     252    22
  Snout-P,            %.   FL   36   195    249      222    14   21   205     245     220    11   14    211     227      219    5   97   181    260     220    15
  P"P,                %.   FL   31    93    118      106     8   20    93     123     104     8   14     91     111      105    5   91    89    123     104     8
  Head length         %.   FL   36   190    246      216    14   21   197     237     212     9   14    206     219      213    4   97   183    260     212    14
  Max. body depth     %.   FL   34   157    205      191    12   19   164     210     184    14   14    190     221      205    9   93   157    221     190    15
  Max. body width     %.   FL   32    53    111       84    13   19    63     104      86    11   14     64      86       74    8   90    53    115      84    12
  P, length           %.   FL   36   110    141      123     7   21   102     140     123    11   14    117     135      127    6   97    78    145     123     9
  P21ength            %.   FL   36    40     64       53     4   19    36      64      53     9   14     50      61       55    3   94    32     64      53     6
  P2 insertion-vent   %.   FL   35   215    318      268    23   20   239     294     271    16   14    235     277      255   11   95   193    339     267    25
  P2 tip-vent         %.   FL   35   162    264      216    20   19   194     262     221    18   14    183     216      200   10   93   162    284     221    22
  Base 10             %.   FL   35   232    286      261    11   20   206     280     253    18   14    238     288      260   12   95   206    306     259    16
  Height 20           %.   FL   35   103    139      120     8   18   109     139     124     8   13    127     141      135    5   88   103    146     123    10
  Base 20             %.   FL   36    69    142      118    13   21   105     140     120    10   14    109     144      125    8   97    69    184     120    14
  Height anal         %.   FL   35   103    130      115     7   20   106     135     123     8   14    121     136      128    5   93    91    136     118     9
  Base anal           %.   FL   36    97    163      121    12   21   103     157     121    12   14    115     131      122    5   97    88    163     119    12
  Snout (fleshy)      %.   FL   36    69     91       81     6   21    73      89      80     4   14     73      78       76    2   97    62     92      79     6
  Snout (bony)        %.   FL   33    43     82       72     7   19    65      78      71     4    9     62      69       66    2   85    43    150      70    11
  Maxilla length      %.   FL   36   103    146      124    11   21   115     139     122     6   14    114     129      120    4   97    99    150     121    10
  Postorbital         %.   FL   31    91    107      100     4   21    90     102      97     3   14     94     101       98    2   92    85    116      98     5
  Orbital (fleshy)    %.   FL   36    25     49       34     7   21    23      48      34     7   14     34      43       39    2   97     2     53      34     7
  Orbital (:>ony)     %.   FL   31    39     64       50     8   21    37      64      50     8   14     50      61       54    3   92    16     77      50     9
  Interorbital        %.   FL   36    29     62       56     6   21    52      59      54     2   14     51      58       54    2   97     2     65     54      7
  2D-caudal           %.   FL   30   430    520      476    25   20   436     509     471    18   14    443     511      467   18   89   234    580     475    38
Head length                     36    40    135       73    26   21    23     122      73    31   14     39      57       48    5   97    18    135      71    26
  Snout (fleshy)      %.   HL   36   350    405      375    13   21   345     434     379    23   14    344     370      358    7   97   338    434     371    16
  Snout (bony)        %.   HL   33   182    375      332    30   19   310     373     336    21    9    299     320      308    8   85   182    576     332    37
  Maxilla length      %.   HL   36   540    610      573    18   21   561     610     578    13   14    542     592      566   12   97   531    610     570    17
  Postorbital         %.   HL   31   403    502      458    26   21   415     497     460    22   14    446     4n       460    8   92   388    509     461    26
  Orbit (fleshy)      %.   HL   36   124    200      156    22   21   114     203     158    27   14    160     196      182   11   97      9   232     158    27
  Orbit (bony)        %.   HL   31   184    278      226    25   21   173     292     234    33   14    228     280      256   15   92     81   337     235    35
  Interorbital        %.   HL   36   143    284      257    22   21   220     288     257    14   14    241     270      254    8   97     11   288     253    33
664
COLLE'ITE and RUSSO: SPANISH MACKERELS
Size. -Maximum size 96.5 cm FL, 5.44 kg; of271           by artisanal fishermen for a total catch in 1971 of
sierra caught in the Gulf of Nicoya, Costa Rica, 50      127 tons (Artunduaga Pastrana 1976).
measured more than 63.5 cm and weighed more
than 5.4 kg (Erdman 1971). Size at first maturity        Distribution.-Eastern Pacific (Fig. 49) from La
26-32 cm FL in Colombia (Artunduaga Pastrana             Jolla, southern California (Collette et al. 1963)
1976). A length-}Veight regression curve has been        south past Payta, Peru (Collette and Russo 1979:
published for 310 Colombian specimens 15-63 em,          fig. 8) to Antofagasta, Chile (lat. 23°24'8, long.
0.03-2.4 kg (Artunduaga Pastrana 1976:fig. 6).             0
                                                         70 26'W, Kong 1978). Also found around the
                                                         Galapagos Islands.
Color pattern. - Bluish above, silvery white ven-
trally, sides with numerous round brownish               Geographic variation. -Comparisons were made
(orange in life) spots, three rows below lateral line,   of morphometric data for three populations of S.
one above (Fig. 67). First dorsal fin black distally,    sierra by ANCOVA (Table 28): Mexico (n =
white at base. Second dorsal tinged with yellow,         31-36), Panama (n = 18-21), Colombia (n = 9-14).
margins black. Anal white.                               Null hypotheses that the 3 sets of regression lines
   There is a color painting of S. sierra by Malm-       are coincident were accepted for 18 sets, rejected
quist in Walford (l937:pl. 39), and there is a good      for 8 sets: Sn-lD, Sn-P2 , Head L, maximum body
black and white underwater photograph ofseveral          depth, Ht 2D, Ht A, Snout (fleshy), and maxilla L.
specimens in the Gulf of California in Thomson et        The Newman-Keuls Multiple Range Test identi-
al. (1979:fig. 115).                                     fied populations that were significantly different
                                                         for 6 sets of regressions. Five of these (Sn-lD,
Biology.-Spawning probably takes place near              Sn-P2 , Head L, Ht A, and maxilla L) indicated that
the coast over most of its range (Klawe 1966).           the populations from Mexico and Panama were
Spawning occurs off Mexico in July-September             significantly different, one (maximum depth) that
(Klawe 1966). Ripe males and females were found          the Panama and Colombia populations were sig-
from late August to the end of November in the           nificantly different. The samples from Panama
Gulf of Nicoya, Costa Rica (Erdman 1971). The            and Colombia were then combined and the com-
maximum incidence of ripe females extends from           bined regressions were compared with those for
November to April in Colombia with a peak in             Mexico. Null hypotheses were rejected for 7 ofthe
February-April (Artunduaga Pastrana 1976).               26 sets of regression lines; the same ones as were
Larvae and juveniles, 4.5-139 mm FL, of S. sierra        rejected in the first test except for maximum body
have been taken from Baja California to Peru             depth. No meristic differences were found between
duringJanuary-April and July-September (Klawe            populations.
1966:fig. 1, table 1). The smallest larvae were
taken off Baja California July-September: 4.5-9.5        Material examined.-Total123 (68-621 mm FL).
mm FL, 13 September; 4.8 mm, 12 August; 8.4 mm,
9 July (Klawe 1966:table 1). Food of adults con-         meas.:    97 (68-621): California (1); Mexico (39,
sists of small fishes (Walford 1937). In Colombia                  *S. sierra); EI Salvador (1); Costa Rica
(Artunduaga Pastrana 1976), the commonest                          (5); Panama (21); Colombia (14); Ecuador
fishes in stomach contents were anchovies (En-                     (7); Peru (6); Galapagos Is. (3).
graulidae, Anchoa and Cetengraulis) and clu-             counts:   123.
peids (Odontognatus and Opisthonema).                    diss.:    13 (368-590): Mexico (2); Panama (5);
                                                                   Ecuador (5).
Interest to fisheries. - According to Walford (1937),
S. sierra seems to be the most abundant game fish              Scomberomorus sinensis (Lacepede)
along the Pacific coasts of Mexico and Central                         Chinese Seerfish
America. It is an excellent food fish frequently                              Figure 68
taken by anglers and abundant enough to support
a commercial fishery (Eckles 1949). Statistics are       Scomber sinensis Lacepede 1800:599 (original
reported from Fishing Areas 77 and 87; the bulk of         description). Lacepede 1802:23 (description
the catch is reported for Mexico 4,028-11,999 t/yr         based on a Chinese drawing). GUnther 1860:
and for Peru 320-579 t/yr in 1979-82 (FAO 1984).           369 (footnoted as dubious species).
No specific commercial fishery exists for S. sierra      Cybium chinense Cuvier in Cuvier and Valen-
in Colombia, but it is taken by the shrimp fleet and       ciennes 1831:180 (original description based on
                                                                                                        665
                                                                                     FISHERY BULLETIN: VOL. 82, NO.4
  same figure used by Lacepede). Temminck                    range). Zama and Fujita 1977:118 (Ogasawara
  and Schlegel 1844:100-101 (description), pI. 53,           Is., listed after Sugiura 1970). Collette 1979:
  fig. 1 (color painting of adult). Richardson               29 (characters, range). Collette and Russo
  1846:268 (synonymy; seas of China and Japan).              1979:13 (diagnostic characters, range). Ohe et .
  GUnther 1860:369 (footnoted as dubious spe-                al. 1981:42-43 (comparison with Miocene Acan-
  cies). Bleeker 1873:131 (China; listed). Kish-             thocybium from Japan). Zhang and Zhang
  inouye 1915:11 (description), pI. 1, fig. 5. * Kish-       1981:104 (range). Lee and Yang 1983:229 (Tai-
  inouye 1923:418-419 (description, range), pI. 21,          wan), fig. 18 (1,056 mm). Cressey et al. 1983:
  fig. 34 (adult), pI. 23, fig. 40 (skull, vertebral         264 (host-parasite list, 3 copepod species). Col-
  column). Kishinouye 1924:92 (26 mmjuvenile                 lette and Nauen 1983:78 (description, range),
  from skipjick stomach). Boeseman 1947:95                   fig.
  (identification of Burger's plate). Morice 1953:         Scomberomorus chinensis. Jordan et al. 1913:
  37 (villiform tongue teeth present).                       122 (Japanese common names). Norman and
Scomberomorus sinensis. Jordan and Snyder                    Fraser 1949:153 (China and Japan). Devaraj
  1900:352 (Tokyo; listed). Jordan and Snyder                1977:56-57 (S. chinensis intermediate between
  1901:64 (Japanese localities). Reeves 1927:8               Acanthocybium and other species of Scomber-
  (Chefoo, China; listed). Mori 1928:5 (Fusan,               omorus).
  Korea; listed). Soldatov and Lindberg 1930:111            Cybium cambodgiense Durand 1940:37-38 (orig-
  (synonymy, description, range). Munro 1943:                 inal description; Phnom Penh, Cambodia), pI. 6.
  69, 71 (placed in subgenus Sierra; C. cambod-             Scomberomorus caualla (not of Cuvier 1829).
  giense Durand a junior synonym of S. sinensis).             Fraser-Brunner 1950:160-161 (Cybium sinensis
  Mori 1952:137 (Fusan, Korea; listed). Mori                  placed in synonymy ofS. caualla and considered
  1956:23 (Kasumi and Hamada, S Japan Sea;                    a subspecies of it).
  listed). Blanc et al. 1965:121-123 (C. cambod-            Scomberomorus chinense. Richards and Klawe
  giense Durand a junior synonym of S. sinensis).             1972:13 (range), 90 (reference to Kishinouye
  *D'Aubenton and Blanc 1965:233-243 (descrip-                1924).
   tion, range, biology), fig. 1 (191 mmjuvenile), fig.     Scomberomorus sp. Kawamoto et al. 1972:49 (de-
   2 (1,170 mm adult). Kamohara 1967:43 (com-                 scription; Mekong Delta, Vietnam), fig. 96.
   parison with S. niphonius). Tokida and Koba-             Scomberomorus cambodgiense. Orsi 1974:174
   yashi 1967:158 (identification of C. chinense              (Vietnam; listed).
   of Uchimura's unpublished 1884 manuscript).
   Sugiura 1970:205 (Bonin Is., listed). Richards           Types of nominal species. -Both Scomber sinen-
   and Klawe 1972:15 (range), 95-96 (reference to           sis Lacepede 1800 and Cybium chinense Cuvier in
   Blanc et al. 1965 and D'Aubenton and Blanc               Cuvier and Valenciennes 1831 are based on a
  1965). Shiino 1972:71 (common name). Mag-                 Chinese drawing; no types are extant (Blanc and
   nuson 1973:350 (short pectoral fin). Orsi 1974:          Bauchot 1964:449).
   175 (Vietnam; listed). Shiino 1976:231 (com-                Cybium cambodgiense Durand 1940. The orig-
   mon name). Klawe 1977:2 (common name,                    inal description was based on a 215 mm specimen
666
COLLE'ITE and RUSSO: SPANISH MACKERELS
taken in Phnom Penh, Cambodia, 28 January                middle of body (D'Aubenton and Blanc 1965:fig.
1939. Because this specimen is not known to still        2).
exist, data are presented from the original descrip-        There is an excellent figure of S. sinensis in
tion: D XVI + 16 + VII; A 19 + VI; P l 22; GR 3 + 9 =    Kishinouye (1923:fig. 34) and there are drawings
12. The figure (pI. 6) accompanying the original         of ajuvenile (191 mm FL, fig. 1) and an adult (1,017
description clearly shows the deep dip in the            mm FL, fig. 2) of S. sinensis from the Mekong
lateral line under the posterior part of the first       River in Cambodia in D'Aubenton and Blanc
dorsal fin.                                              (1965).
Diagnosis. -The only species of Scomberomorus            Biology. -No information is available on the
that has a swim bladder and the only species with        movements of S. sinensis. Although it penetrates
an abrupt downward curve in the lateral line             great distances up the Mekong River, D'Aubenton
beneath the first dorsal fin (Fig. 68). Two spe-         and Blanc (1965) reported that they failed to find
cies, S. cavalla and S. commerson, also have             the slightest trace ofsexual activity in Cambodian
abrupt downward curves in the lateral line but           freshwater specimens and so they concluded that
they are under the second dorsal fin. The lateral        S. sinensis must reproduce exclusively in the sea.
line in the other 15 species descends gradually          No information is available on eggs or larvae
without any prominent dips. The pectoral fins are        (Richards and Klawe 1972), but D'Aubenton and
large and rounded rather than pointed as in the          Blanc (1965) did report on juveniles as small as 166
other 17 species. Palatine tooth patch very narrow       mm FL from TonIe Sap, Cambodia.
as in Scomberomorus commerson and Acantho-
cybium. Ventral process of angular moderate, 87-         Interest to fisheries. - No catches were reported as
93% as long as the dorsal process, as in S. cavalla.     S. sinensis by FAO for the period 1979-82 (FAO
Posterior end of maxilla only slightly expanded          1984). However, it is a prized food fish in Japan
as in S. multiradiatus. Ascending process of             and probably in China as well. Kishinouye(1923)
premaxilla very long as in S. lineolatus and
Acanthocybium.
                                                            TABLE 29.-Summary of morphometric data of                 Scom-
Description. -Intestine with two folds and three            beromorus sinensis.         FL =    fork length, HL   =    head
limbs (Fig. 3q). Spines in first dorsal fin 15-17,          length.
usually 16 or 17 (Table 9); second dorsal fin rays              Character                   N     Min.   Max.   Mean    SO
15-17, usually 15 or 16 (Table 10); dorsal finlets 6-7      Fork length                     18    157    714    330     176
                                                              Snout-A             %.   FL   14    573    605    584      11
(Table 10); anal fin rays 16-19, usually 17 or 18             Snout-20            %.   FL   14    526    571    558      13
(Table 11); anal finlets 5-7, usually 6 (Table 11);           Snout-lO            %.   FL   16    268    309    292       9
                                                              Snout-P,            %.   FL   16    270    318    290      12
pectoral fin rays 21-23, usually 22 (Table 12).               Snout-P,            %.   FL   16    234    279    259      11
Precaudal vertebrae 19 or 20 (Table 6); caudal                P,-P,               %.   FL   16    101    128    113       7
                                                              Head length         %.   FL   18    230    264    255       8
vertebrae 21 or 22, usually 22 (Table 7); total               Max. body depth     %.   FL   16    201    231    218      10
                                                              Max. body width     %.   FL   16     77    127    102      14
vertebrae 41 or 42, usually 41 (Table 8). Gill rakers         P, length           %.   FL   18    133    186    157      14
on first arch (1-3)+ (10-12)= 11-15, usually 2+               p,length            %.   FL   16     75     89     83       5
                                                              P2 insertion-vent   %.   FL   15    254    295    273      13
(10-11)= 12-13 (Table 5). Morphometric characters             P, tip-vent         %.   FL   15    161    216    189      17
given in Table 29.                                            Base 10             %.   FL   16    230    282    260      12
                                                              Height 20           %.   FL   15    130    164    145      10
                                                              Base 20             %.   FL   15     99    137    121      11
Size. - Maximum size 200 cm FL, 80 kg in weight               Height anal         %.   FL   16    129    164    145      10
                                                              Base anal           %.   FL   16     99    149    122      12
(Kishinouye 1923). A length-weight graph for fish             Snout (fleshy) .    %.   FL   16     86    106     97       5
                                                              Snout (bony)        %.   FL   16     77     99     90       5
up to 120 cm FL and 18 kg was published by                    Maxilla length      %.   FL   16    131    159    147       7
D'Aubenton and Blanc (1965:fig. 4).                           Postorbital         %.   FL   16    104    126    117       7
                                                              Orbital (fleshy)    %.   FL   16     25     40     35       5
                                                              Orbital (bony)      %.   FL   16     40     61     52       7
Color pattern_ -Back greenish blue, belly silvery,            Interorbital        %.   FL   16     54     72     63       5
                                                              20-caudal           %.   FL   13    394    469    445      27
fins mostly blackish. Pelvic and anal fins with             Head leng1h                     18     41    173     83      41
blackish margins, anal finlets colorless (Kishi-              Snout (fleshy)      %.   HL   16    360    414    382      14
                                                              Snout (bony)        %.   HL   16    335    387    355      14
nouye 1923). Large (larger than the diameter of               Maxilla length      %.   HL   16    561    603    578      12
the eye), round, indistinct spots on sides in two             Postorbital         %.   HL   16    404    482    460      24
                                                              Orbit (fleshy)      %.   HL   16    104    155    138      17
poorly defined rows in adults (Fig. 68). Juveniles            Orbit (bony)        %.   HL   16    157    236    202      23
                                                              Interorbital        %.   HL   16    208    289    249      23
with saddlelike blotches extending down to about
                                                                                                                             667
                                                                                     FISHERY BULLETIN: VOL. 82, NO.4
reported that 2 or 3 dozens of this species were           2 sets of regression lines are coincident were
often caught on an autumn day in pound nets on             accepted for all but 1 set of the 26 sets, Sn-P2
the southern coast of Korea. It is caught in the           (intercepts 7.552 and 8.385 respectively). The
Mekong River of Cambodia and commanded a                   Chinese sample had slightly fewer gill rakers on
high price in the Phnom Penh market in 1964                the first gill arch (11-14, mode 12, i 12.30) than the
(D'Aubenton and Blanc 1965:242).                           Mekong sample (12-15, mode 13, i 13.17). No other
                                                           meristic differences were found.
Distribution. -Western Pacific from Japan and
China south to Cambodia and Vietnam where it               Material examined.-TotaI19 (157-714 mm FL).
enters the Mekong River (Fig. 51). The northern
limit is Akita, Honshu, in the Sea ofJapan and the         meas.:     18 (157-714): China (10); Mekong R.,
Chiba-Tokyo area on the Pacific coast (Kishinouye                     Cambodia (6); Cochinchine (2).
1923:418). There are records or specimens from             counts:    18.
Pusan, Korea (Mori 1928, 1952), Cheefo (= Yentai)          diss.:     1 (plus 1 head, 431 mm).
on the Shantung Peninsula (Reeves 1927), the
Zhoushan Islands (lat. 30o N, long. 122°E, USNM
220856), Foochow (ZMH 11384), Amoy (USNM                            Scomberomorus tritor (Cuvier)
221277), and Hong Kong (CAS GVF HK 127). A                          West African Spanish Mackerel
record from the Bonin (or Ogasawara) Islands                                      Figure 69
(Sugiura 1970; repeated by Zama and Fujita 1977)
has not been verified and seems very far offshore          Cybium tritor Cuvier in Cuvier and Valenciennes
for this species. It has been taken on the coast of         1831:176-177 (original description; Goree, Sen-
Vietnam at Nha Trang (Blanc et aI. 1965). Scom-             egal), pI. 218. GUnther 1860:372 (description
beromorus sinensis is the only species ofthe genus          after Cuvier). Rochebrune 1882:96 (very com-
and of the family to move any significant distance          mon; Goree, Dakar). Osorio 1898:197 (Prin-
into freshwater. It was described as a distinct             cipe). Pellegrin 1908:75 (Dakar). Chabanaud
species, Cybium cambodgiense, by Durand (1940)              and Monod 1927:278 (Port-Etienne), fig. 30 A.
from material from Phnom Penh, Cambodia, about              Cadenat 1947:15 (common names; W Africa).
300 km up the Mekong River. Specimens (MNHN                 Postel 1954:357-358 (stomach contents of 286
1965-286-9) have come from TonIe Sap (or Grand              specimens), 362 (gonosomatic index). A. Postel
Lac) which is even further lip the Mekong River             1955:60-61, fig. 3 (lower jaw teeth 10-21, upper
(Blanc et aI. 1965).                                        jaw teeth 13-27; 190 specimens), 63, fig. 5
                                                            (number of jaw teeth in males and females).
Geographic variation. -Morphometric data for                *Postel 1955a:4-158 (distribution, size, repro-
two small samples of S. sinensis were compared              duction), pI. II, bottom figure. Postel 1955b:
with ANCOVA: China (n = 7-10) and the Mekong                31-32 (sex ratio, maximum size, number of
River, Cambodia (n = 6). Null hypotheses that the           eggs). Frade and Postel 1955:35 (histology of
668
COLLE'ITE and RUSSO: SPANISH MACKERELS
  gonads; mature in June), fig. 7 (oocytes). Pos-         Miyake and Hayasi 1972:I1I-3 (in key), IV-lO
  tel 1958:107-111 (summary of Postel 1955a).             (common names). Magnuson 1973:350 (short
  Postel 1959:163 (listed). Postel 1960:257 (Cap          pectoral fin). Klawe 1977:2 (common name;
  Blanc to Senegambie). Marchal 1961:106 (lat.            range). Penrith 1978:187 (Baia dos Tigres,
  9°12'N, long. 13°42'W). Franca 1964:table 3             Angola). Collette et aI.I978:274-275 (compar-
  (Angola). Daget and Iltis 1965:280-281 (Ebrie           ison with W Atlantic species). Collette 1979:
  and Abi lagoons, Ivory Coast), fig. 178. San-           29 (characters, range). Collette and Russo
  ches 1966:146 (Angola). Blache et aI. 1970:375          1979:13 (diagnostic characters, range). Col-
  (in key), fig. 960 (not fig. 961). Conand 1970:40       lette 1981:Scombm 7 (description, range), fig.
  (distribution of larvae).                               Seret and Opic 1981:332-333 (description), fig.
Apolectus immunis Bennett 1831:146 (original              Cressey et aI. 1983:264 (host-parasite list, 4
  description; "Atlantic Coast of North Africa").         copepod species). Collette and Nauen 1983:79
Cybium maculatum. Not ofMitchill 1815. Stas-              (description, range), fig.
  sano 1890:44 (Spanish Sahara). Vinciguerra
  1890:100-103 (synonymy). Osorio 1898:197              Types of nominal species. -Holotype: MNHN
  (Sao Thome).                                          A.6871; Goree, Senegal; Rang; 658 mm FL; D
Scomberomorus argyreus Fowler 1905:764-765              XV + 17 + VIII; A 17 + VIII; PI 21; RGR I 2+ 1+ 10
  (original description, "West Africa"), pI. 51.        = 13. Paratype: MNHN A.6868; Goree; Senegal;
Scomberomorus maculatus. Not of Mitchilll815.           Rang; 505 mm FL. Photographs of the holotype
  Fowler 1936:628-629. Cadenat 1937:482 (Da-            and paratype were published by Blanc and Bau-
  kar). Scaccini 1941:19 (synonymy in part; Mau-        chot (1964:pI. 4, figs. 19, 20).
  ritania). Navarro 1943:131 (Cabo Barbas and             Scomberomorus argyreus Fowler 1905. Holo-
  Blanco, Banco Arguin, Mauritania). Tortonese          type: ANSP 11400; west coast of Africa; Dr. Sav-
  1949:65 (accidental in Mediterranean Sea).            age; 148mmFL; DXVII+ 17+ VIII;AI9+ VIII; PI
  Sanz Echeverria 1950:1-2 (sagitta compared            22-22; RGRI 2+ 1 + 11= 14; vertebrae 18+28= 46.
  with other scombrids), pI. 1, figs. 1-4 (photo-
  graphs of sagittae). Mather and Day 1954:182,         Diagnosis. -This species possesses nasal denti-
  185 (Sierra Leone, Dakar, Canary Is.; S. tritor       cles as do the other five species ofthe regalis group
  not specifically distinct from S. maculatus).         (brasiliensis, concolor, maculatus, regalis , and
  Tortonese 1956:7 (accidental in Mediterranean         sierra) but lacks the artery branching from the
  Sea). Poll 1959:104-106 (description; S to Baie       fourth left epibranchial artery that is present in
  des Tigres, Angola), fig. 34. Maurin et aI.           the other species (Fig. 7b). Intercalar spine absent
  1970:19 (Nouakchott, NW Africa). Lozano               as in the other five species ofthe regalis group and
  Cabo 1970:158 (Sahara coast). Fagade and              S. niphonius.
  Olaniyan 1973:212, 220, 224 (piscivorous, feed-
  ing largely on Ethmalosa fimbriata in Lagos).         Description. -Lateral line gradually descending
  Fagade and Olaniyan 1974:249 (caught in Lagos         to midline on caudal peduncle. Intestine with two
  Lagoon when water was brackish). Tortonese            folds and three limbs (Fig. 3r). Spines in first
  1975:354-355 (description, Italy), fig. 155.          dorsal fin 15-18, usually 17 or 18 (Table 9); second
Scomberomorus tritor: Munro 1943:67-71 (placed          dorsal fin rays 16-19, usually 17 (Table 10); dorsal
  in subgenus Scomberomorus). Irvine 1947:              finlets 7-9, usually 8 (Table 10); anal fin rays
  186-187 (Accra, Ghana), fig. 108. Fraser-             17-20, usually 18 or 19 (Table 11); anal finlets
  Brunner 1950:158 (synonymy in part), fig. 27.         7-9, usually 8 (Table 11); pectoral fin rays 20-22,
  Chaine 1957:504-509 (otoliths), pI. IV (otoliths).    usually 21 (Table 12). Precaudal vertebrae 18 or 19,
  Gras 1961:583 (Lagune de Cotonou and Lac              usually 19 (Table 6); caudal vertebrae 27 or 28,
  Nokoue, Dahomey). Bauchot and Blanc 1961:             usually 27 (Table 7); total vertebrae 46 or 47, •
  372-373 (types). Blanc and Bauchot 1964:448           usually 46 (Table 8). Gill rakers on first arch
  (types), pI. IV, figs. 19-20 (photographs oftypes).   (1-3) + (10-13) = 12-15, usually 2 + (11-12) = 13-14
  Gorbunova 1965a:54 (spawning season). Col-             (Table 5). Postel (1955a) reported a range of 10-15
  lette 1966:367 (types). Williams 1968:436, ta-        gill rakers for 240 males and 520 females, 94% of
  ble 593 (taken from Gambia to the Congo during        both sexes 12-14. Morphometric characters given
  the Guinean Trawling Survey). Collette 1970:           in Table 30.
   4-5 (in key; Mediterranean Sea). Richards and
   Klawe 1972:15 (range), 96 (references to larvae).    Size. -Maximum size of males 83.9 em FL, fe-
                                                                                                         669
                                                                                            FISHERY BULLETIN: VOL. 82, NO.4
males 97.5 cm FL; commonly 50-70 cm; age at first                   8. tritor with food contained the clupeid Ethma-
maturity of both sexes 45 cm (Postel 1955a).                        losa fimbriata (Fagade and Olaniyan 1973). No
                                                                    sexually mature stages of 8. tritor were found in
Color pattern. - Upper parts of body bluish, belly                  the lagoon so Fagade and Olaniyan concluded that
silvery, sides marked with several poorly defined                   the lagoon served as a feeding ground for this and
rows of elongate spots (Fig. 69). First dorsal fin                  other piscivorous fishes that could tolerate the
black anteriorly and along distal margin posteri-                   reduced salinity of the lagoon.
orly, white at base.
   There are drawings of 8. tritor in Postel (1955a:                Interest to fisheries. - Taken throughout the Gulf
pI. 2) and Poll (1959:fig. 34), Collette (1981:                     ofGuinea, but catches are reported only for Ghana
Scombm 7), and Seret and Opic (1981:333).                           and Angola in the period 1979-82. Most of the
                                                                    catch is reported for GhaBa, 1,569 to 4,412 t/yr
Biology.-Sexual maturity in both sexes of 8.                        (FAO 1984).
tritor occurs from April to October in Senegal
(Postel 1955a). Postel (1955a) reported 1 million                   Distribution. -Eastern Atlantic, concentrated in
eggs in a 95 cm FL female. Juveniles have been                      the Gulf of Guinea from the Canary Islands
seined along the shore near Dakar in July (Postel                   (Mather and Day 1954; MCZ 26416), West Sahara
1955a). Seven larvae 3.5-8.1 mm were caught in                      (Stassano 1890), and Dakar, Senegal (original
September, December, February, and March,                           description), south to Baia dos Tigres, southern
south of the Ivory Coast at water temperatures of                   Angola (Fig. 49). Accidental and rare in the
23.2°-26°C and salinities of 34.38-35.45%0 (Zhu-                    Mediterranean Sea (Tortonese 1949, 1956), with
dova 1969). Three larvae identified as 8. tritor                    several extant specimens from Nice (NHMV
were reported from a station track from Dakar to                    14599, MSUF M.1665), Villefranche, and Palermo
Recife (Zharov and Zhudova 1967), but this distri-                  (Tortonese 1975).
bution seems highly unlikely. In Lagos Lagoon,
Nigeria, stomach contents of 24 of 26 specimens of                  Material examined.-TotaI49 (69-658 mm FL).
Scombrini, only 3 vertebrae supporting the caudal                                                                                                                        semifasciatus from node 9; guttatus from node 8;
fin and only 31 total vertebrae. Therefore, we have                                                                                                                      and regalis from node 5.
used it as the outgroup for comparison with Scom-                                                                                                                           The sinensis group is monotypic. It is defined by
beromorus. Of the 72 characters that differenti-                                                                                                                         the presence of an abrupt downward curve in the
ated at least 1 taxon from the others, 14 were                                                                                                                           lateral line under the first dorsal fin (character 19,
autapomorphies of Acanthocybium. These cannot                                                                                                                            state 1). A similar abrupt downward curve is
contribute to an understanding of relationships                                                                                                                          present in two species ofthe commerson group but
within Scomberomorus and were omitted from the                                                                                                                           the curve is under the second dorsal in those two
analysis. The remaining 58 characters were em-                                                                                                                           species. Scomberomorus sinensis is the only spe-
ployed to generate a cladogram using a computer                                                                                                                          cies in the genus with a well-developed swim
program (WAGNER 78) written by J. S. Farris                                                                                                                              bladder (character 18, state 0), but this is a plesio-
(following Farris 1970 and Farris et al. 1970). The                                                                                                                      morphous character. This species is restricted to
order of the taxa was "shuffled" to determine if                                                                                                                         the northwestern Pacific from Cambodia to Ja-
another equally parsimonious tree would be gen-                                                                                                                          pan. There is no genus-group name available for
erated. Another cladogram was produced with the                                                                                                                          this group.
same total length, 112 steps. The first cladogram                                                                                                                           The commerson group contains four species:
has a deviation ratio (sum of the homoplasies                                                                                                                            niphonius, queenslandicus, cavalla, and commer-
between all pairwise combinations of terminal                                                                                                                            son. This group is defined by the presence of an
taxa divided by the sum of the character changes                                                                                                                         intercalar spine of at least moderate length (char-
between all pairwise combinations of terminal                                                                                                                            acter 17, state 1). Three species (queenslandicus,
taxa) of 0.24, the second 0.21. The difference is due                                                                                                                     cavalla, and commerson) have a long (state 2)
to characters 3 and 17. We feel that the first                                                                                                                           intercalar spine. Scomberomorus cavalla and S.
cladogram (Fig. 70) more reasonably reflects our                                                                                                                         commerson share two additional specializations:
concepts of evolution within the genus. A sum-                                                                                                                           the pterosphenoid bones are close together (char-
mary ofthe character states with references to the                                                                                                                       acter 13, state 1) and there is an abrupt downward
relevant figures is presented as Appendix 1.                                                                                                                              curve in the lateral line under the second dorsal
   We recognize six species groups within Scom-                                                                                                                          fin (character 19). Three ofthese species are Indo-
beromorus (Fig. 70, Table 31):' sinensis from node                                                                                                                       West Pacific: niphonius from China, Korea, and
17; commerson from node 15; munroi from node 11;                                                                                                                         Japan; queenslandicus from off northern Austra-
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                                                                                                                                                                                                                                        671
                                                                                            FISHERY BULLETIN: VOL. 82, NO.4
TABLE 31.-Changes in character states based on the most             lia and southern Papua New Guinea; and com-
parsimonious cladogram in Figure 70. Numbers under acquisi.         merson widespread throughout the Indo-West Pa-
tion and reversal columns refer to nodes, three-letter mnemonics    cific. The fourth, cavalla, is restricted to the
refer to species of Scomberomorus, and four-letter mnemonics
refer to genera, i.e., ACAN = Acanthocybium. Two or more
                                                                    western Atlantic. The genus-group name Cybium
components per cell indicate independent acquisition or loss of a   Cuvier (type-species S. commerson) is available
character state. Two or more states of the same character ac-       for this group.
quired at a single node assume that the more primitive state was       Scomberomorus niphonius is the only species in
transitional during the acquisition of the more advanced state.
                                                                    the genus with a straight gut. This species has
Char-               Acqui-                Char-            Acqui-   very small scapular foramina (character 11, state
acter   State       sitian   Reversal     acter   State    sition
         0      19                         26
                                                                    2), a character state also found, evidently homo-
                                                    0     19
         1      18                                  1     18        plasiously, in S. guttatus and S. koreanus. It is re-
         2      ACAN,13       CAY                   2     17
  2      0      19                         27       0     19
                                                                    stricted to the northwestern Pacific from China,
         1      18            SEM                   1     18        Korea, and Japan. The genus-group name Sawara
         2      COM, 18       15                    2     ACAN
  3      0      8,17          11           28       0     ACAN      Jordan and Hubbs is available for S. niphonius.
         1      19                                  1     19           The munroi group is monotypic. It is defined by
         2      ACAN                                2     17
  4      0      19                         29       0     19        the loss ofthe anterior process on the outer surface
         1      13, 18        15                    1     17        of the head of the maxilla. It is restricted to
         2      13, ACAN      CAY          30       0     19
  5      0      19                                  1     17        northern Australia and southern Papua New
         1      17                         31       0     19
         2      15            MUL                   1     17
                                                                    Guinea. There is no genus-group name available
         3      10                         32       0     19        for this group.
  6      0      8             GUT                   1     17
         1      17            NIp, 16      33       0     19           The semifasciatus group contains three species:
         2      19                                  1     17        plurilineatus, lineolatus, and semifasciatus. This
         3      ACAN                       34       0     19
  7      0      19                                  1     17        group is defined by the presence of a greatly
         1      16,18         CAV,9        35       0     19        expanded posterior end of the maxilla (character
  8      0      19                                  1     17
         1      18            GUT          36       0     19        5, state 3). Two species, S. lineolatus and S.
         2      ACAN, LIN                           1     17
  9      0      CAV,GUT                    37       0     19
                                                                    semifasciatus, share an additional specialization,
         1      19                                  1     17        a wide parasphenoid (character 7, state 1). This
         2      18, LIN       15           38       0     19
 10      0      19                                  1     17        character state appears independently in several
         1      5             BRA          39       0     19        other lines. All are Indo-West Pacific species,
 11      0      ACAN                                1     17
         1      19                         40       0     19        plurilineatus along the coast of East Africa plus
         2      NIp, 7                              1     17        Madagascar, lineolatus along the continental
 12       Ii    19                         41       0     19
         1      17                                  1     18        coast from India to Indonesia, and semifasciatus
         2      17            14           42       0     19
 13      0      19                                  1     18
                                                                    in northern Australia and southern Papua New
         1      LIN, 14                    43       0     19        Guinea. The genus-group name Indocybium Mun-
 14      0      19                                  1     18
         1      6                          44       0     19        ro (type-species S. semifasciatus) is available for
 15      0      19                                  1     18        this group.
         1      3,9           LIN, 4       45       0     19
 16      0      19                                  1     18           The guttatus group contains three species: mul-
         l      1                          46       0     19
 17      0      19                                  1     18
                                                                    tiradiatus, guttatus, and koreanus. This group is
         1      5,12                       47       0     19        defined by a high supraoccipital crest (character
         2      13                                  1     18
 18      0      19                         48       0     19        14, state 1). Two species, guttatus and koreanus ,
         1~
                15                                  1     18        share the presence of auxiliary branches of the
 19      0      19                         49       0     19
         1      14,18         15                    1     18        lateral line (character 20, state 1). They also have
 20      0      19                         50       0     19        very small scapular foramina (character 11, state
         1      7                                   1     18
 21      0      19                         51       0     19        2), a character state shared homoplasiously with
         1      5                                   1     18
22       0      19                         52       0     19
                                                                    S. niphonius. All are Indo-West Pacific species,
         1      4                                   1     18        guttatus and koreanus along the coast of Asia and
         2      2                          53       0     19
23       0      19                                  1     18        multiradiatus confined to a small section of the
         1      17            MUL          54       0     19        Gulf of Papua off the mouth of the Fly River. The
         2      LIN                                 1     18
24       0      19                         55       0     19        genus-group name Pseudosawara Munro (type-
         1      18                                  1     18        species S. guttatus) is. available for this group.
         2      17                         56       0     19
25       0      19                                  1     18           The regalis group contains six Atlantic and
         1      18                         57       0     19
         2      17                                  1     18
                                                                    eastern Pacific species: tritor, maculatus, con-
                                           58       0     17        color, sierra, brasiliensis, and regalis. This group
                                                    1     19
                                                                    is defined by the presence of nasal denticles (char-
672
COLLETTE and RUSSO: SPANISH MACKERELS
acter 21, state 1), a synapomorphy unique to the        (formerly at DASF); Pearl Sonoda (CAS); Camm
group. All species also have a moderately long          Swift (LACM); Frank Talbot (CAS, formerly at
intercalar spine (character 17), but this is also       SAM and AMS); H. Wilkens (ZMH); Richard
present in S. niphonius. All species in the group       Winterbottom (ROM, formerly at RUSI); and Luis
have a vomerine ridge (character 10, state 1)           Alberto Zavalla-Camin (MPIP and MZUSP).
except for S. brasiliensis in which it has been           Frozen material, vital to this project, was ob-
secondarily lost. The five most advanced species        tained through the much appreciated efforts of
(all except S. tritor) have an artery arising from      Tokiharu Abe (University of Tokyo); Adam Ben-
the fourth left epibranchial artery (character 22,      Tuvia (Sea Fisheries Research Station, Haifa);
state 1). The four most advanced species (all except    Frederick H. Berry and Mark D. Lange (TABL);
S. tritor and S. maculatus) have developed a long       John Carleton (Queensland Fisheries Service); M.
posterior process on the pelvic girdle (character 16,   Devaraj (formerly at Central Marine Fisheries
state 1). The three most advanced species (sierra,      Research Institute, Mandapam Camp, India);
brasiliensis, and regalis) have a coeliaco-mesen-       Jeffrey B. Graham (formerly at Smithsonian
teric shunt connecting the fourth right epibran-        Tropical Research Institute, Balboa, Panama);
chial artery with the coeliaco-mesenteric artery        Elwood K. Harry (International Game Fish Asso-
(character 22, state 2). The two most advanced          ciation, Fort Lauderdale, Fla.); Barry Hutchins
species (brasiliensis and regalis ) have lost the       (WAM); S. A. Jaleel (Marine Fisheries Depart-
pterotic spine (character 15, state 1) but this spine   ment, Karachi, Pakistan); W. L. Klawe (Inter-
has also been independently lost in other lines.        American Tropical Tuna Commission, La Jolla,
The genus-group name Scomberomorus Lacepede             Calif.); Leslie W. Knapp (Smithsonian Oceano-
sensu stricto (type-species S. regalis ) applies to     graphic Sorting Center); A. D. Lewis (formerly at
this group.                                             DASF); Eugene L. Nakamura (NMFS, Panama
                                                        City, Fla.); the late Al Pflueger (Miami); Gary
           ACKNOWLEDGMENTS                              Sharp (FAO, formerly at Inter-American Tropi-
                                                        cal Tuna Commission); J. M. Stretta (Centre de
   For permission to examine specimens in their         Recherches Oceanographiques, Abidjan, Ivory
institutions, or for donating specimens to the          Coast); Camm Swift (LACM); Sen Min Tan (Ma-
USNM collections, we thank the following: Kunio         rine Fisheries Research Department, SEAFDEC,
Amaoka (HUMZ); Maria Luisa Azzaroli (MSUF);             Singapore); Rudy van der Elst (Oceanographic
Reeve M. Bailey (UMMZ); Marie-Louise Bauchot            Research Institute, Durban); and Charles Wen-
(MNHN); Adam Ben-Tuvia (Sea Fisheries Re-               ner (South Carolina Department of Marine
search Station, Haifa); M. Boeseman (RMNH); the         Resources).
late James E. Bohlke (ANSP); Ian W. Brown                 Work at the Australian Museum in 1969-70 was
(formerly Senior Fisheries Officer, Fiji); Dan          made possible through the National Marine Fish-
M. Carlsson (ZMK, formerly at Phuket Marine             eries Service and the Trustees of the Australian
Biological Center, Thailand); F. Cervigon M.            Museum, its Director at that time, Frank H.
(UDONECl); C. E. Dawson (GCRL); Alan R.                 Talbot and its Curator of Fishes, John R. Paxton.
Emery (ROM); William N. Eschmeyer (CAS);                   For assistance with computer processing we
William L. Fink (formerly at MCZ); Carter R.            thank K. K. Beach and E. M. Hamilton of the
Gilbert (UF); C. G. Gruchy (NMC); Karsten Hartel        George Washington University Center for Aca-
(MCZ); Philip C. Heemstra (RUSl); P. A. Hulley          demic and Administrative Computing. L. C.
(SAM); Robert K. Johnson (FMNH); Paul Kahs-             Hayek, Office of Computer Services, Smithsonian
bauer (formerly at NHMV); Robert J. Lavenberg           Institution, provided consultation and suggestions
(LACM); Don E. McAllister (NMC); R. J. McKay            regarding the statistical procedures used herein.
(formerly at WAM); Geoff McPherson (Queens-             Ruth E. Gibbons and Gary A. Pettit assisted with
land Fisheries Service); Naercio A. Menezes             data analysis.
 (MZUSP); A. G. K. Menon (ZSI); Ian S. R. Munro           The figures, which are an integral part of this
(CSIRO); Eugene L. Nakamura (NMFS, Panama               paper, were drawn by Keiko Hiratsuka Moore.
City, Fla.); Js;>rgen G. Nielsen (ZMK); Han Nijssen     Plates were prepared by Ruth E. Gibbons. Radio-
(ZMA); John R. Paxton (AMS); Thomas Potthoff            graphs were taken by George Clipper and Ruth E.
(TABL); William J. Richards (TABL); C. Richard          Gibbons. Jack Marquardt and his staff at the
Robins (University of Miami); Donn E. Rosen             Smithsonian library were most helpful in finding
(AMNH); Richard Rosenblatt (SIO); B. R. Smith           and obtaining early or obscure references. Typing,
                                                                                                       673
                                                                                                 FISHERY BULLETIN: VOL. 82, NO.4
674
COLLETTE and RUSSO: SPANISH MACKERELS
BEN-TuvIA, A.                                                           Akad. Kunst. J. Morino Comp., Ber!., Part 7, 144 p.
    1968. Report on the fisheries investigations of the Israel       1797. Ichtyologie, ou histoire naturelle, generale et par-
      South Red Sea Expedition, 1962. Bul!. Sea Fish. Res.              ticuliere, des poissons. Dixieme Partie, 120 p. Berlin.
      Stn. Haifa 52, p. 21-55.                                    BLOCH, M. E., AND J. G. SCHNEIDER.
    1971. Revised list of the Mediterranean fishes of Isra-          1801. Systema ichthyologiae. Berolini, 584 p.
      e!. Isr. J. Zoo!' 20:1-39.                                  BOESEMAN, M.
BEN-YAMI, M.                                                         1947. Revision of the fishes collected by Burger and Von
    1968. Observations on the distribution and behaviour of             Siebold in Japan. Zoo!. Meded. Rijksmus. Nat. Rist.
      pelagic schooling fish in the southern Red Sea. Bul!. Sea         Leiden 28:1-242.
      Fish. Res. Stn. Haifa 51, p. 31-46.                            1964. Scombroid types in the Leidim Museum collection.
BERRIEN, P., AND D. FINAN.                                              Proc. Symp. Scombroid Fishes, Mar. Bio!' Assoc. India,
    1977a. Biological and fisheries data on king mackerel,              Symp. Ser. I(Part 1):461-468.
       Scomberomorus cavalla (Cuvier). Sandy Hook Lab.            BOHLKE, J. E.
      Tech. Ser. Rep. 8, 40 p.                                       1953. A catalogue of the type specimens of Recent fishes
    1977b. Biological and fisheries data on Spanish mackerel,           in the Natural History Museum of Stanford University.
       Scomberomorus maculatus (Mitchill). Sandy Hook Lab.              Stanford Ichthyo!. Bul!. 5:1-168.
      Tech. Ser. Rep. 9, 52 p.                                    BOHLKE, J. E., AND C. C. G. CHAPLIN.
BIGELOW, H. B., AND W. C. SCHROEDER.                                 1968. Fishes of the Bahamas and adjacent tropical wa-
    1953. Fishes ofthe Gulf of Maine. U.S. Fish Wild!. Serv.,           ters. Livingstone Pub!. Co., Wynnewood, Pa., 771 p.
      Fish. Bul!. 53:1-577.                                       BOULENGER, G. A.
BINI, G., AND E. TORTONESE.                                          1899. Viaggio del Dott. Enrico Festa nel Darien e regioni
    1955. Missione sperimentale di pesca nel Cile e nel Peru -          vicine. Poissons de I'Amerique Centrale. Bol!. Mus.
      pesci marini Peruviani. Bol!. Pesca Pisco Idrobio!., New          Zoo!' Anat. Compo Torino 14(346):1-4.
      Ser.,9(2):1-39.                                             BREDER, C. M., JR.
BLACHE, J., J. CADENAT, AND A. STAUCH.                               1936. Scientific results of the second oceanographic expe-
    1970. Cles de determination des poissons de mer signales            dition of the ·Pawnee" 1926. Heterosomata to Pediculati
      dans l'atlantique oriental entre Ie 20e parallele Nord et         from Panama to lower California. Bul!. Bingham Ocean-
       Ie 15e paralleIe Sud. Faune Trop. XVIII, O.RS.T.O.M.,            ogr. Collect. Yale Univ. 2(3):1-56.
       Paris, 480 p.                                                 1948. Field book of marine fishes of the Atlantic coast from
BLANC, M., AND M. L. BAUCHOT.                                           Labrador to Texas; being a short description of their
    1964. Les Scombroidei (poissons tel{,osteens Perciformes)           characteristics and habits with keys for their identifica-
      du Museum National d'Histoire Naturelle de Paris.                 tion. G. P. Putnam's Sons, N.Y., 332 p.
       Proc. Symp. Scombroid Fishes, Mar. Bio!' Assoc. India,     BRIGGS,'J. C.
      Symp. Ser. HPart 1):443-458.                                   1958. A list of Florida fishes and their distribution. Bul!.
BLANC, M., F. D'AUBENTON, AND P. FOURMANOIR.                            Fla. State Mus., Bio!. Sci. 2:223-318.
    1965. A propos d'un Scombridae des eaux douces Cam-           BUEN, F. DE.
      bodgiennes: Scomberomorus sinensis (Lacepede, 1802).           1972. Clase V. Los peces tele6stomos (TeleostomiJ. In
      Bul!. Mus. Hist. Nat., Ser. 2, 37:121-123.                        Luis Cendrero (editor), Zoologia Hispanoamericana,
BLEEKER,P.                                                              Vertebrados, p. 55-332. Editorial Porrua, Mexico,
    1851a. Over eenige nieuwe geslachten en soorten van                  D.F.
       Makreelachtige visschen van der Indischen Archipel.        BULLIS, H. R, R B. ROE, AND J. C. GATLIN.
       Nat. Tijdschr. Ned.-Indie 1:341-372.                          1972. The Southeast Fisheries Center bionumeric code
    185lb. Visschen van Banka. Nat. Tijdschr. Ned.-Indie                 Part I: Fishes. U.S. Dep. Commer.; NOAA Tech. Rep.
      1:159-161.                                                         NMFS SSRF-659, 95 p.
    1852. Bijdrage tot de kennis der Makreelachtige visschen      BURNE, RH.
       van den Soenda-Molukschen Archipe!. Verh. Bat. Gen.           1909. The anatomy of the olfactory organ of teleostean
      24(5):1-93.                                                       fishes. Proc. Zoo!' Soc. Lond. 1909:610-663.
    1853. Nalezingen op de icthyologische fauna van Bengalen      BUTZ, G., AND R J. MANSUETI.
      en Hindostan. Verh. Bat. Gen. 25:1-164.                         1962. First record of the king mackerel, Scomberomorus
    1860. Dertiende bijdrage tot de kennis der vischfauna van           cavalLa, in northern Chesapeake Bay, Maryland. Chesa-
       Borneo. Act. Soc. Sci. Indo-Neerl. 8:1-64.                        peake Sci. 3:130-135.
    1861a. Mededeeling omtrent vischsoorten, nieuw voor de         CADENAT,J.
       kennis der fauna van Singapoera. Vers!. Akad. Arnst.           1937. Recherches systematiques sur les poissons littoraux
       12:28-63.                                                         de la Cote Occidental d'Afrique, recoltes par Ie navire
    1861b. lets over de vischfauna van het eiland Pinang.                President Theodore-Tissier, au cours de sa 5" croisiere
       Vers!. Akad. Arnst. 12:64-80.                                     (1936). Rev. Trav. Off. Sci. Tech. pech. Marit. 10:
    1873. Memoire sur la faune ichthyologique de Chine.                  423-562.
       Ned. Tijdschr. Dierk. 4:113-154.                               1947. Noms vernaculaires des principales formes d'ani-
    1874. Poissons de Madagascar et de l'Ile de la Reunion.              maux marins des cotes de l'Afrique Occidentale Fran-
       In Recherches sur la faune de Madagascar et de ses                9aise. Inst. Fr. Afr. Noire, Cat. II, 56 p.
       dependances d'apres les decouvertes de F. P. L. Pollen     CANTOR, T. E.
       et D. C. van Dam. 4 Partie. Leiden, 104 p.                     1849. Catalogue of Malayan fishes. J. Asiat. Soc., Ben-
    1879. Contribution ilIa faune ichthyologique de l'Ile Mau-           gal 18:983-1443.
       rice. Verh. Akad. Arnst. 18:1-23.                          CASTELNAU, F. DE.
BLOCH,M.E.                                                            1855. Poissons. In Animaux nouveaux ou rares recueillis
    1793. Naturgeschichte der ausliindischen Fische. Konig!.             pendant I'expedition dans les parties centrales de
                                                                                                                             675
                                                                                                 FISHERY BULLETIN: VOL. 82, NO.4
676
COLLETTE and RUSSO: SPANISH MACKERELS
CRAIG, J. A.                                                       DEVARAJ,M.
    1926. A new fishery in Mexico. Calif. Fish Game 12:                1976. Discovery ofthe scombrid Scomberomorus koreanus
      166-169.                                                           (Kishinouye) in India, with taxonomic discussion on the
CRESSEY, R. F., B. B. COLLETTE, AND J. L. RussO.                         species. Jpn. J. Ichthyol. 23(2):79-87.
    1983. Copepods and scombrid fishes: a study in host-               1977. Osteology and relationships of the Spanish macker-
      parasite relationships. Fish. Bull., U.S. 81:227-265.              els and seerfishes ofthe tribe Scomberomorini. IndianJ.
CRESSEY, R. F., AND H. B. CRESSEY.                                       Fish. 22:1-67.
    1980. The parasitic copepods of mackerel- and tuna-like            1982. Age and growth of three species of seerfishes
      fishes (Scombridae) of the world. Smithson. Contrib.                Scomberomorus commerson, S. guttatus and S. lineo-
      Zool. 311:1-186.                                                   latus. Indian J. Fish. 28:104-127.
CROKER, R. S.                                                      DE VIS, C. W.
    1933. The California mackerel fishery. Calif. Div. Fish            1884. New fishes in the Queensland Museum. No.3. Proc.
      Game, Fish Bull. 40,149 p.                                          Linn. Soc. N.S.W. 9:537-547.
    1937. Monterey Spanish mackerel taken at Long Beach.           DHAWAN, R. M., P. V. S. NAMBOOTHIRI, AND V. G. GOPINATHAN.
      Calif. Fish Game 23:245-246.                                     1972. Results of trolling line operations in Goa waters
CUVIER, G.                                                               during 1965-68. Indian J. Fish. 14:181-187.
    1829. Le regne animal. Nouv. ed. Tom. II. Deterville,          DOl, T., AND D. MENDIZABAL.
      Paris, 406 p.                                                    1979. Evaluacion preliminar de la poblacion de sierra,
CUVIER, G., AND A. VALENCIENNES.                                          Scomberomorus maculatus (Mitchill), frente a las costas
    1831. Histoire naturelle des poissons. Vol. 8,375 p. F. G.           de Veracruz. In E. L. Nakamura and H. R. Bullis, Jr.
      Levrault, Paris.                                                   (editors); Proceedings ofthe Mackerel Colloquium, p. 43-
DAGET, J., AND A. ILTIS.                                                 55. Gulf States Mar. Fish. Comm. No.4.
    1965. Poissons de Cote d'Ivoire, eaux douces et saumatres.     DOMANTAY, J. S.
      Mem. Inst. Fr. Afr. Noire 74, 385 p.                             1940. The fishing industry of Margosatubig. Philipp. J.
DAHL,G.                                                                  Sci. 72:371-382.
    1971. Los peces del norte de Colombia. INDERENA,               DRESSLAR, F. B., AND B. FESLER.
      Bogota, 391 p.                                                   1889. A review of the mackerels (Scombrinae) of America
D'AUBENTON, F., AND M. BLANC.                                            and Europe. Bull. U.S. Fish Comm. 7:429-446.
    1965. Etude systematique et biologique de Scomber-             DURAND,J.
      omorus sinensis (Lacepede, 1802), poisson des eaux douces        1940. Notes sur quelques poissons d'especes nouvelles ou
      du Cambodge. Bull. Mus. Natl. Hist. Nat., Ser. 2, 37:               peu connus des eaux douces cambodgiennes. Notes Inst.
      233-243.                                                            Oceanogr. Indochine 36:1-40.
DAY, F.                                                            DWINELL, S. E., AND C. R. FUTCH.
    1873. Report on the sea fish and fisheries of India and            1973. Spanish and king mackerel larvae and juveniles in
      Burma. Gov. Press, Calcutta, 86 + 332 p.                            the northeastern Gulf of Mexico, June through October
    1878. The fishes of India; being a natural history of the             1969. Fla. Dep. Nat. Resour., Mar. Res. Lab., Leaf!. Ser.
      fishes known to inhabit the seas and fresh waters ofIndia,          4, pt. 1, No. 24, p. 1-14.
      Burma, and Ceylon. Vol. 1, p.1-778. Bernard Quaritch,        EARLL, R. E.
      Lond.                                                            1883. The Spanish mackerel, Cybium maculatum (Mitch.)
DEARDORFF, T. L., AND R. M. OVERSTREET.                                   Ag.; its natural history and artificial propagation, with
    1981. Larval Hysterothylacium (= Thynnascaris) (Nema-                 an account of the origin and development of the fish-
      toda: Anisakidae) from fishes and invertebrates in the              ery. Rep. U.S. Comm. Fish Fish. 1880:395-426.
      Gulf of Mexico. Proc. Helminthol. Soc. Wash. 48:113-         ECKLES, H. H.
      126.                                                             1949. Observations on juvenile oceanic skipjack (Katsu-
DE BEAUFORT, L. F.                                                        wonus pelamis) from Hawaiian waters and sierra mack-
    1951. Percomorphi (concluded). The fishes of the Indo-                erel (Scomberomorus sierra) from the eastern Pacific.
     .Australian Archipelago. Vol. 9, p. 1-242. E. J. Brill,              U.S. Fish Wildl. Serv., Fish. Bull. 51:245-250.
      Leiden.                                                      ERDMAN, D. S.
DELSMAN, H. C.                                                         1949. Does the Spanish mackerel, Scomberomorus macu-
    1931. Fish eggs and larvae from the Java Sea. 18. The                latus (Mitchill), occur throughout the West Indies?
      genus Cybium, with remarks on a few other Scom-                     Copeia 1949:301.
      bridae. Treubia 13:401-410.                                      1956. Recent fish records from Puerto Rico. Bull. Mar.
DELSMAN, H. C., AND J. D. F. HARDENBERG.                                  Sci. Gulf Caribb. 6:315-340.
    1934. De· Indische Zeevisschen en Zeevisscherij. Bibl.             1971. Notes on fishes from the Gulf of Nicoya, Costa Rica.
       Ned.-Ind. Naturhist. Ver., VI, Batavia-Centrum, 338 p.             Rev. BioI. Trop. 19:59-71.
DE SYLVA, D. P.                                                        1977. Spawning patterns of fish from the northeastern
    1955. The osteology and phylogenetic relationships of the             Caribbean. In Cooperative Investigations of the Carib-
      blackfin tuna, Thunnus at/anticus (Lesson). Bull. Mar.              bean and adjacent regions II, p. 145-169. FAO Fish.
       Sci. Gulf Caribb. 5:1-41.                                          Rep. 200.
DEVANE, J. C., JR.                                                 EVERMANN, B. w., AND O. P. JENKINS.
    1978. Food of king mackerel, Scomberomorus caval/a, in             1891. Report upon a collection of fishes made at Guaymas,
       Onslow Bay, North Carolina. Trans. Am. Fish. Soc.                  Sonora, Mexico, with descriptions of new species. Proc.
       107:583-586.                                                       U.s. Natl. Mus. 14:121-165.
DEVANESEN, D. w., AND K. CHIDAMBARAM.                              EVERMANN, B. w., AND R. LEWIS.
    1953. The common food-fishes of the Madras State. Gov.             1917. The fishes of the west coast ·of Peru and the Titicaca
       Press, Madras, 79 p.                                               Basin. Bull. U.S. Natl. Mus. 95, 166 p.
                                                                                                                              677
                                                                                                 FISHERY BULLETIN: VOL. 82, NO.4
678
COLLE'ITE and RUSSO: SPANISH MACKERELS
                                                                                                                               679
                                                                                                  FISHERY BULLETIN: VOL. 82, NO.4
   1933. A check list of fishes from Dumaguete, Oriental               1964b. Olfactory organs of tunas with special reference to
     Negros, P. I., and its immediate vicinity. J. Pan-Pac.              their systematic significance. Bull. Misaki Mar. Bio!.
     Res. lnst. 8(4):6-11.                                               Inst., Kyoto Univ:, No.7, p. 1-8.
   1936. Fishes of the Crane Pacific Expedition. Field Mus.         JENKINS, G. P., N. E. MILWARD, AND R. F. HARTWICK.·
     Nat. Hist., Zoo!' Ser., 21:1-472.                                 1984. Identification· and description of larvae of Span-
   1953. Check list of Philippine fishes. U.S. Fish Wildl.               ish mackerels, genus Scomberomorus (Teleostei: Scom-
     Serv.,Res. Rep. 20, 977 p.                                          bridae), in shelf waters ofthe Great Barrier Reef. Aust.
HERRE, A. w., AND E. S. HERALD.                                          J. Mar. Freshw. Res. 35:341-353.
   1951. Noteworthy additions to the Philippine fish fauna          JOHNSON, A. G.
     with descriptions ofa new genus and species. Philipp. J.          1981. Electrophoretic patterns of proteins in Spanish
     Sci. 79:309-340.                                                    mackerel (Scomberomorus maculatus). U.S. Dep. Com-
HERRE, A. w., AND G. S. MYERS.                                           mer., NOAA Tech. Memo. NMFS-SEFC-76, 11 p.
   1937. A contribution to the ichthyology of the Malay             JOHNSON, A. G., W. A. FABLE, JR., M. L. WILLIAMS, AND L. E.
     Peninsula. Bull. Raffles Mus. 13:5-75.                           BARGER.
HERRE, A. w., AND A. F. UMALI.                                          1983. Age, growth, and mortality of king mackerel,
   1948. English and local common names of Philippine                     Scomberomorus cavalla, from the southeastern United
     fishes. U.S. Fish Wild!. Serv., Circ. 14, 128 p.                     States. Fish. Bull., U.S. 81:97-106.
HIGGINS, E.                                                         JOHNSON, G. D.
    1920. Mexican fishes in California ports.       Calif. Fish         1975. The procurrent spur: An undescribed perciform
      Game 6(1):33-34.                                                    caudal character and its phylogenetic implications. Oc-
HILDEBRAND, S. F.                                                         cas. Pap. Calif. Acad. Sci. 121, 23 p.
    1946. A descriptive catalog of the shore fishes of Peru.        JONES, S.
      U.s. Natl. Mus. Bull. 189, 530 p.                                 1962. Notes on eggs, larvae and juveniles of fishes from
HILDEBRAND, S. F., AND L. E. CABLE.                                       Indian waters. VIII. Scomberomorus guttatus (Bloch and
    1938. Further notes on the development and life history               Schneider), IX. Scomberomorus commerson (LacepMe)
      of some teleosts at Beaufort, N.C. Bull. U.S. Bur. Fish.            and X. Scomberomorus lineolatus (Cuvier). Indian J.
      48: 505-642.                                                        Fish. 8:107-120.
HILDEBRAND, S. F., AND W. C. SCHROEDER.                                 1968. The scombroid fishery of India-present and fu-
    1928. Fishes of Chesapeake Bay. Bull. U.S. Bur. Fish.                 ture. Proc. Symp. Scombroid Fishes, Mar. BioI. Assoc.
      43:1-388.                                                           India, Symp. Ser. l(Part 3):994-1000.
HOLBROOK, J. E.                                                     JONES, S., AND M. KUMARAN.
    1860. Ichthyology of South Carolina. 2d ed. Russell and             1964. Eggs, larvae and juveniles of Indian scombroid
      Jones, Charleston, S.C., 205 p.                                     fishes. Proc. Symp. Scombroid Fishes, Mar. BioI. Assoc.
HONMA,Y.                                                                  India, Symp. Ser. l(Part 1):343-378.
   1952. A list ofthe fishes collected in the Province ofEchigo,    JONES, S., AND E. G. SILAS.
     including Sado Island. [In Jpn.J Jpn. J. Ichthyol. 2:             1961. On fishes ofthe subfamily Scomberomorinae (family
     138-146.                                                            Scombridae) from Indian waters. Indian J. Fish. 8:
HORN, M. H., AND L. G. ALLEN.                                            189-206.
   1978. A distributional analysis of California coastal ma-           1964. A systematic review of the scombroid fishes of In-
     rine fishes. J. Biogeogr. 5:23-42.                                  dia. Proc. Symp. Scombroid Fishes, Mar. BioI. Assoc.
HUBBS, C. L.                                                             India, Symp. Ser. l(Part 1):1-105.
   1936. Fishes of the Yucatan Peninsula. Publ. Carnegie            JONES, S., E. G. SILAS, AND E. DAWSON.
      lnst. Wash. 457, p. 157-287.                                     1960. New records of scombroid fishes from the Andaman-
HUTCHINS, B.                                                             Nicobar waters. J. Mar. BioI. Assoc. India 2:136-137.
   1979. A guide to the marine fishes of Rottnest Island.           JORDAN, D. S.
      Creative Research, Perth, 103 p.                                  1884. List of fishes collected at Key West, Florida with
HUTTON, F. W.                                                             notes and descriptions. Proc. U.S. Natl. Mus. 7:103-150.
    1895. Notes on some New Zealand fishes, with description            1895. The fishes of Sinaloa. Proc. Calif. Acad. Sci., Ser. 2,
      of a new species. Trans. N. Z. Inst. 28:314-318.                    5:377-514.
HUTTON, F. W. (EDITOR).                                             JORDAN, D. S., AND M. C. DICKERSON.
    1904. Index faunae Novae Zealandiae. Philos. Inst. Can-            1908. On a collection of fishes from Fiji, with notes on
      terbury, N.Z., 372 p.                                              certain Hawaiian fishes. Proc. U.S. Nat!. Mus. 34:
IRVINE, F. R.                                                            603-617.
    1947. The fishes and fisheries of the Gold Coast. Crown         JORDAN, D. S., AND B. W. EVERMANN.
       Agents for the Colonies, Lond., 352 p.                          1896a. A check-list of the fishes and fish-like vertebrates
IVO,C. T. C.                                                             of North and Middle America. Rep. U.S. Comm. Fish
    1972. Epoca de desova e idade na primeira matura~iio                 Fish. 1895, 21:207-584.
       sexual da cavala, Scomberomorus cavalla (Cuvier), no            1896b. The fishes of North and Middle America. U.S.
       Estado do Ceara. Arq. Cienc. Mar 12:27-29.                        Natl. Mus. Bull. 47:1-1240.
   1974. Sabre a fecundidade da cavala, Scomberomorus                  1900. The fishes of North and Middle America. U.S.
       cavalla (Cuvier), em aguas costeiras do Estado do Ceara           Natl. Mus. Bull. 47:3137-3313,392 pIs.
       (Brasil). Arq. Cienc. Mar 14:87-89.                             1902. American food and game fishes. Doubleday, Page
IWAI, T., AND 1. NAKAMURA.                                               & Co., N.Y., 572 p.
    1964a. Branchial skeleton ofthe bluefin tuna, with special      JORDAN, D. S., B. W. EVERMANN, AND H. W. CLARK.
       reference to the gill rays. Bull. Misaki Mar. BioI. lnst.,      1930. Check list of the fishes and fishlike vertebrates of
       Kyoto Univ., No.6, p. 21-25.                                      North and Middle America north of the northern bound-
680
COLLE'ITE and RUSSO: SPANISH MACKERELS
                                                                                                                                   681
                                                                                                   FISHERY BULLETIN: VOL. 82, NO.4
      Rosario. An. Inst. Invest. Mar. Punta Betln 11:49-57.                 Hai and Bo Hai. [In Chin., Engl. abstr.] Trans. Chin.
KRISHNAMOORTHI, B.                                                          khthyol. Soc. 2:129-137.
    1957. Fishery resources of the Rameswaram Island. In-             LIU, C., X. ZHANG, AND K. YANG.
      dian J. Fish. 4:229-253. '                                          1982. Studies on the growth of Spanish mackerel, Scom-
    1958. Observations on the spawning season and the fish-                 beromorus niphoniw; in the Huanghai Sea and Bohai
      eries of the spotted seer, Scomberomorus guttatus (Bloch              Sea. [In Chin., Eng!. abstr.] Oceano!' Limnol. Sin.
      & Schneider). Indian J. Fish. 5:270-281.                              13(2):170-178.
KUMARAN,M.                                                            LoCKINGTON, W. N.
    1964. Observations on the food of juveniles of Scomber-               1879a. On a new genus and species of Scombridae. Proc.
      omorus commerSon (Lacep(!de) and S. guttatus (Bloch and               Acad. Nat. Sci. Phila. 31:133-136.
      Schneider) from Vizhingam, west coast of India. Proc.               1879b. Report upon the food fishes of San Francisco. Rep.
      Symp. Scombroid Fishes, Mar. Bio!' Assoc. India, Symp.                COl)llll. Fish., State of Calif. 1878-79:17-58.
      Ser. I(Part 2):586-590.                                         LoWE, R H. (MCCONNELL).
KURONUMA, K., AND Y. ABE.                                                 1962. The fishes of the British Guiana continental shelf,
    1972. Fishes of Kuwait. Kuwait Inst. Sci. Res., Kuwait                  Atlantic coast of South America, with notes on their
      City, 123 p.                                                          natural history. J. Linn. Soc. Lond. Zool. 44:669-700.
KUSAKA, T.                                                            LoZANO CABO, F.
    1974. The urohyal of fishes. Univ. Thkyo Press, Tokyo,                1970. Caracteristiques zoogeographiques de la faune ich-
      320p.                                                                 thyologique des cOtes des iIes Canaries, du Maroc, du
KYUSHIN, K., K. AMAOKA, K. NAKAYA, H. IDA, Y. TANINO,                       Sahara espagnol et de la Mauritanie avec une etude
  AND T. SENTA.                                                             speciale des poissons ci>tiers. Rapp. P.-v. Reun., Cons.
    1982. Fishes ofthe South China Sea. Jpn. Mar. Fish. Res.                Perm. Int. Explor. Mer 159:152-164.
      Cent., Thkyo, 333 p.                                            LUBBOCK, R, AND A. EDWARDS.
LACEPEDE, B. G. E.                                                        1981. The fishes of Saint Paul's Rocks. J. Fish BioI. 18:
    1800-1803. Histoire naturelle des poissons. Vo!. 2, 1800,               135-157.
      632 p.; Vol. 3,1801, 558 p. Plasson, Paris.                     LYLES,C. H.
LA MONTE,F.                                                               1969. The Spanish mackerel and king mackerel fish-
    1945. North American game fishes. Doubleday, Doran                      eries. U.S. Dep. Commer., NOAA, NMFS, Curro Fish.
      and Co., Inc., Garden City, N.Y., 202 p.                              Stat. 4936, 21 p.
    1952. Marine game fishes of the world. Doubleday and              MAcGREGOR, R, 1lI, J. J. DINDO, AND J. H. FINUCANE.
       Co., Inc., Garden City, N.Y., 190 p.                               1981. Changes in serum androgens and estrogens during
LATIFF,M.                                                                   spawning in bluefish, Pomatomus saltator, and king
    1971. A guide to trawl species in Penang waters. Minist.                mackerel, Scomberomorus cavalla. Can. J. Zoo!' 59:
      Agric. Lands, Malaysia, 150 p.                                        1749-1754.
LEON, P. E.                                                           MACLEAY, W
    1973. Ecologia de la ictiofauna del Golfo de Nicoya, Costa            1881. Descriptive catalogue ofthe fishes of Australia. Part
       Rica, un estuario tropical. Rev. Bio!. Trop. 21:5-30.                ll. Proc. Linn. Soc. N.S.w 5:510-629.
LEE, S., AND H. YANG.                                                     1884a. Notes on a collection of fishes from the Burdekin
    1983. Fishes ofthe suborder Scombroidei ofTaiwan. Bull.                 and Mary Rivers, Queensland. Proc. Linn. Soc. N.SW.
       Inst. Zool. Acad. Sin. 22:217-242.                                   8:199-213.
LEWIS, A. D.                                                              1884b. Supplement to the descriptive catalogue of the
    1981. Population genetics, ecology and systematics orInda-              fishes of Australia. Proc. Linn. Soc. N.S.W 9:2-64.
       Australian scombrid fishes, with particular reference          MAGNUSON, J. J.
       to skipjack tuna (Katsuwonus pelamis). Ph.D. Thesis,               1973. Comparative study of adaptations for continuous
       Australian National Univ., 314 p.                                    swimming and hydrostatic equilibrium of scombroid and
LEWIS, A. D., L. B. CHAPMAN, AND A. SESEWA.                                 xiphoid fishes. Fish. Bull., U.S. 71:337-356.
    1983. Biological notes on coastal pelagic fishes in Fiji.         MAGNUSON, J. J., AND J. G. HEITZ.
       Fish. Div. (MAF) Fiji Tech. Rep. 4, p. 1-68.                       1971. Gill raker apparatus and food selectivity among
LEWIS, A. D., B. R SMITH, AND R E. KEARNEY.                                 mackerels, tunas, and dolphins. Fish. Bull., U.S. 69:
    1974. Studies on tunas and baitfish in Papua New Guinea                 361-370.
        waters - II. Dep. Agric. Stock Fish., Res. Bul!. 11, 113 p.   MAGO LECCIA, F.
 LEWIS, R J., AND R ENDEAN.                                               1958. The comparative osteology of the scombroid fishes of
     1983. Occurrence of a ciguatoxin-like substance in the                 the genus &omberomorus from Florida. Bull. Mar. Sci.
       Spanish mackerel (&omberomorus commersoni). Thxi-                    Gulf Caribb. 8:299-34L
        con 21:19-24.                                                 MALPAS, A. H.
 LIMA, H. DE H., AND OLIVEIRA, A. M. E. DE.                               1926. The marine biological survey of the littoral waters of
     1978. Segunda contribui~o ao conhecimento dos nomes                    Ceylon. Bull. Ceylon Fish. 2:13-165.
        vulgares de peixes marinhos do nordeste Brasileiro. Bol.      MANOOCH, C. S., 1lI.
        CiEmc. Mar 29:1-26.                                              1979. Recreational and commercial fisheries for king
 LINDSEY, C. C.                                                            mackerel, Scomberomor.us cavalla, in the South Atlantic
     1968. Temperatures of red and white muscle in recently                Bight and Gulf of Mexico, U.S.A. In E. L. Nakamura
        caught marlin and other large tropical fish. J. Fish. Res.         and H. R Bullis, Jr. (editors), Proceedings ofthe Macker-
        Board Can. 25:1987-1992.                                           el Colloquium, p. 33-41. Gulf States Mar. Fish. Comm.
 LIU,C.                                                                    No.4.
     1981. Age determination of Spanish mackerel, Scomber-            MANOOCH, C. S., 1lI, E. L. NAKAMURA, AND A. B. HALL.
        omorus niphonius (Cuvier and Valenciennes) in Huang              1978. Annotated bibliography of four Atlantic scombrids:
682
COLLE'ITE and RUSSO: SPANISH MACKERELS
      Scomberomorus brasiliensis, S. cavalla, S. maculatus,              of Mexico (Pisces: Scombridae). Northeast Gulf Sci. 4
      and S. regalis. U.S. Dep. Commer., NOAA Tech. Rep.                 (1):1-16.
      NMFS Circ. 418, 166 p.                                        MCKAY, R. J.
MARCGRAVE, G.                                                          1970. Additions to the fish fauna of Western Australia -
    1648. Historiae rerum naturalium Brasiliae libri viii.               5. West. Aust. Fish. Bul!. 9:3-24.
      Leyden and Amsterdam, 303 p.                                  MCPHERSON, G. R.
MARCHAL,E.                                                             1981. Preliminary report: Investigations of Spanish mack-
   1961. Quelques observations complementaires sur les                   erel Scomberomorus commerson in Queensland wa-
     Scombridae peches par Ie "Pyrrhus." Bull. mst. Fr. Afr.             ters. In C. J. Grant and D. G. Walter (editors), Northern
     Noire 23A:102-107.                                                  pelagic fish seminar, p. 51-58. Aust. Gov. Pub!. Serv.,
MARQUEZ M., R.                                                           Canberra.
   1973. Informe sinoptico de la sierra, Scomberomorus mac-         MEABURN, G. M.
     ulatus (Mitchill), del Golfo de Mexico. Inst. Nac. Pesca,          1979. Heavy metal contamination of Spanish mackerel,
     INP/SI: i 14, 19 p.                                                  Scomberomorus maculatus and king mackerel, S. caval-
MARR, J. C., AND M. B. SCHAEFER.                                          lao In E. L. Nakamura and H. R. Bullis, Jr. (editors),
    1949. Definitions of body dimensions used in describing               Proceedings of the Mackerel Colloquium, p. 61-66. Gulf
      tunas. U.S. Fish Wild!. Serv., Fish. Bul!. 51:241-244.              States Mar. Fish. Comm. No.4.
MARSHALL, T. C.                                                     MEAD,G.W
    1964. Fishes of the Great Barrier Reef and coastal wa-             1951. Postlarval Neothunnus macropterus, Auxis thazard,
      ters of Queensland. Angus and Robertson, Sydney, 566               and Euthynnus lineatus from the Pacific coast of Cen-
      p. (Also 1965, Livingston Pub!. Co., Narbeth.)                     tral America. U.S. Fish Wild!. Serv., Fish. Bul!. 52:121-
    1966. Tropical fishes of the Great Barrier Reef. Angus               127.
      and Robertson, Sydney, 239 p.                                 MEEK, S. E., AND S. F. HILDEBRAND.
MASUDA, H., C. ARAGA, AND T. YOSHINO.                                  1923. The marine fishes of Panama. Field Mus. Nat.
   1975. Coastal fishes of southern Japan. Tokai Univ.                   Rist., Pub!. 215, Zoo!' Ser. 15, Part 1, 330 p.
     Press, Tokyo, 379 p.                                           MEEK, S. E., AND R. G. NEWLAND.
MATHER, F. J., III.                                                    1884. A review of the American species of Scomberomo-
   1954. Northerly occurrences of warmwater fishes in the                rus. Proc. Acad. Nat. Sci. Phila. 36:232-235.
     western Atlantic. Copeia 1954:292-293.                         MENDOZA N., A.
MATHER, F.J., III, AND C. G. DAY.                                       1968. Consideraciones sobre la biologia pesquera de la
   1954. Observations of pelagic fishes of the tropical Atlan-            sierra, Scomberomorus maculatus (Mitchil!), en el Estado
     tic. Copeia 1954:179-188.                                            de Veracruz. Bios 1(2):11-22.
MATHER, F. J., III, AND R. H. GIBBS, JR.                            MENEZES, M. FERREIRA DE.
   1957. Distributional records of fishes from waters off New          1969a. Alimenta~iio da cavala, Scomberomorus cavalla
     England and the middle Atlantic states. Copeia 1957:                (Cuvier), em aguas costeiras do Estado do Ceara. Arq.
     242-244.                                                            Cienc. Mar 9:15-20.
MATSUMOTO, W M.                                                        1969b. Algumas observa~oes osteologicas e merlsticas so-
  1968. Morphology and distribution of larval wahoo Acan-                bre a cavala, Scomberomorus cavalla (Cuvier), do nord-
    thocybium solandri (Cuvier) in the central Pacific Ocean.            este brasileiro. Arq. Cienc. Mar 9:175-178.
    U.S. Fish Wild!. Serv., Fish. Bull. 66:299-322.                    1970. Alimenta~iio da serra, Scomberomorus maculatus
MAUGE,L. A.                                                              (Mitchil!), em aguas costeiras do Estado do Ceara. Arq.
  1967. Contribution preliminaire a l'inventaire ichtyolo-               Ciimc. Mar 10:171-176.
    gique de la region de Tulear. Ann. Univ. Madagascar,               1972. Numero de rastros da serra, Scomberomorus macu-
    ser. Sci. Nat., Math. 5:215-246. (Also published in Re-              latus (MitchiH), das aguas costeiras do Estado do Ce-
    cueil Trav. Stn. Mar. Endoume-Marseille, Fasc. hors sar.             ara. Arq. Cienc. Mar 12:86-88.
    supp!. no. 7, p. 101-132.)                                         1976. Aspectos biol6gicos da serra, Scomberomorus macu-
MAURIN, C., F. LOZANO CABO, AND M. BONNET.                               latus (Mitchill), capturada por currais-de-pesca. Arq.
   1970. Inventaire faunistique des principales especes ich-             Cienc. Mar 16:45-48.
     thyologiques frequentant les cotes nord-ouest africaines.      MENON, A. G. K.
     Rapp. P.-v. Reun. Cons. Int. Explor. Mer 159:15-21.               1966. On a collection of fish from the Coromandel Coast of
MCALLISTER, D. E.                                                        India including Pondichery and Karaikkal areas. Rec.
   1968. The evolution of branchiostegals and associated                 Indian Mus. 59:369-404.
     opercular, gular, and hyoid bones, and the classification of   MERCERON, M.
     teleostome fishes, living and fossi!. Bul!. Nat. Mus. Can.        1970. Note sur les tazars (Scomberomorus spp.) des cotes
     221,239 p.                                                          cambodgiennes et leur peche. Univ. Rennes Trav. Fac.
MCCULLOCH, A. R.                                                         Sci. Ser. Oceanogr. Bio!' 3:69-90.
   1922. Check list of the fish and fish-like animals of New        MERRETT, N. R., AND C. H. THORP.
     South Wales. Part 3. Aust. Zoo!' 2(3):86-130.                     1966. A revised key to the scombroid fishes of East Africa
   1929. A check-list of the fishes recorded from Australia.             with new observations on their biology. Ann. Mag. Nat.
     Aust. Mus. Syd. Mem. 5(1):1-144.                                    Rist., Ser. 13, 8:367-384.
MCCULLOCH, A. R., AND G. P. WHITLEY.                                MILES, D. W, AND E. G. SIMMONS.
   1925. A list of the fishes recorded from Queensland wa-             1951. The menhaden fishery. 'lex. Game, Fish, Oyster
     ters. Mem. Queens!. Mus. 8(2):125-182.                              Comm., Bull. 39, 28 p.
McEACHRAN, J. D., J. H. FINUCANE, AND L. S. HALL.                   MILLER, D. J., AND R. N. LEA.
   1980. Distribution, seasonality and abundance of king               1972. Guide to the coastal marine fishes of California.
     and Spanish mackerel larvae in the northwestern Gulf                Calif. Dep. Fish Game, Fish Bul!. 157, 235 p.
                                                                                                                              683
                                                                                              FISHERV BULLETIN: VOL. 82, NO.4
684
COLLE'ITE and RUSSO: SPANISH MACKERELS
                                                                                                                             685
                                                                                                 FISHERY BULLETIN: VOL. 82, NO.4
686
COLLEITE and RUSSO: SPANISH MACKERELS
      Memo. NMF8-SEFC-128, 22 p.                                     1968. Tuna fishery of the Tinnevelly Coast, Gulf of Man-
SANCHES, J. G.                                                         nar. Proc. Symp. Scombroid Fishes, Mar. BioI. Assoc.
   1966. Peixes de Angola (teloosteos). Notas Mimeogr.                 India, Symp. Ser. 1(Part 3):1083-1118.
     Centro BioI. Piscat., Lisboa, No. 46, 227 p.                SIVASUBRAMANIAM, K., AND I. A. MOHAMED.
SANCHEZ T., J., AND R. LAM C.                                        1982. Common fishes of Qatar. Sci. Atlas Qatar 1:1-176.
   1970. Algunas caracteristicas fisicas y quimicas de las       SKOW, L. C., AND M. E. CHIITENDEN, JR.
     principales especies para consumo humano y sus rendimi-         1981. Differences in hemoglobin phenotypes among Span-
     entos en productos pesqueros, en el Peru. Inst. Mar               ish mackerel, Scomberomorus maculatus. Northeast
     Peru, Callao, Inf. 33, 92 p.                                      Gulf Sci. 5(1):67-70.
SANZ ECHEVERRIA, J.                                              SMILEY, C. W.
    1950. Notas sobre otolitos de peces proeedentes de las           1881. The Spanish mackerel, and its artificial propaga-
      costas del Sahara. Segunda parte. Bol. Inst. Espaii.             tion. Proc. Am. Assoc. Adv. Sci. 29(1880):575-583.
      Oceanogr. 27, 14 p.                                        SMiTH, C. L., AND R. M. BAILEY.
SCACCINI,A.                                                          1962. The subocular shelf of fishes. J. Morphol.110:1-17.
    1941. Primo elenco di pesci raccolti in Atlantico neUe       SMITH,H.M.
      acque della Mauritania, del Sahara spagnolo e delle            1907. The fishes of North Carolina. N.C. Geol. Econ.
      Canarie. Thalassia 4(10):1-49.                                   Survey, Raleigh 2, 453 p.
SCHROEDER, W. C.                                                 SMITH, J. L. B.
    1924. Fisheries of Key West and the clam industry of             1935. New and little known fishes from South Africa.
      Southern Florida. Rep. U.S. Comm. Fish., 1923, App.              Rec. Albany Mus. 5:169-235.
      12:1-74. (Doc. 962.)                                           1949[1953, 1961, 4th ed.]. The sea fishes of Southern
SCOIT,J.S.                                                             Mrica. Central News Agency, Ltd., South Africa, 550 p.
   1959. An introduction to the sea fishes of Malaya. Min-           1956. The fishes of Aldabra. Part V. Ann. Mag. Nat.
     istry of Agriculture, Kuala Lumpur, 180 p.                        Hist., Ser.12, 9(106):721-729.
SEALE, A.                                                            1964. Scombroid fishes of South Africa. Proc. Symp.
   1940. Report on the fishes from Allan Hancock expeditions           Scombroid Fishes, Mar. BioI. Assoc. India, Symp. Ser.
     in the California Academy of Sciences. Allan Hancock              l(Part 1):165-183.
     Pac. Exped. 9:1-46.                                         SMITH, J. L. B., AND M. M. SMITH.
SERET, B., AND P. OPIC.                                              1963. The fishes of Seychelles. Rhodes Univ., Dep. leh-
   1981. Poissons de mer de l'ouest Africain tropical.                 thyol., Grahamstown, S.A., 215 p.
     O.R.S.T.O.M., Collect. Initiat.-Doc. Tech. 49, 416 p.           1966. Fishes of the Tsitsikama Coastal National Park.
SERVENTY, D. L.                                                        Natl. Parks Board, S. Afr., 161 p.
    1950. Tuna survey ofnorth Australia. Aust. Fish. Newsl.      SNODGRASS, R. E., AND E. HELLER.
      9:18-20.                                                       1905. Papers from the Hopkins-Stanford Galapagos Expe-
SHA, X.-S., G.-F. HE, AND H.-W. CHANG.                                 dition, 1898-1899. XVII. Shore fishes ofthe Revillagigedo,
   1966. A description of the morphological characters of the          Clipperton, Cocos and Galapagos Islands. Proc. Wash.
     eggs and larvae of the blue spotted mackerel, Scom-               Acad. Sci. 6:333-427.
     beromorus niphonius (Cuvier and Valenciennes). [In          SOLDATOV, V. K.
     Chin., Engl. summ.] Oceanologia Limnol. Sin. 8(1):1-12.         1929. A check list of fishes recorded from Russian Pacific
SHARP, G. D.                                                           waters. J. Pan-Pac. Res. Inst. 4(1):3-7.
   1973. An electrophoretic study of hemoglobins of some         SOLDATOV, V. K., AND G. J. LINDBERG.
     scomhroid fishes and related forms. Compo Biochem.              1930. A review ofthe fishes of the seas of the Far East.
     Physiol. 44B:381-388.                                             [In Russ.] Bull. Pac. Sci. Fish. Inst. 5, 576 p.
SHAW,G.                                                          SPRINGER, V. G., AND J. PiRSON.
   1803. General zoology or systematic natural history. Pis-         1958. Fluctuations in the relative abundance of sport
     ces 4(Part 2):187-632. Kearsley, Lond.                            fishes as indicated by the catch at Port Aransas, Texas.
SHENOY, A. v., AND M. A. JAMES.                                         Publ.lnst. Mar. Sci., Univ. Tex. 5:169-185.
   1974. Spoilage of spotted seer (Scomberomorus guttatus)       STARKS, E. C.
     during ice storage. Fish. Technol. 11:67-72.                    1910. The osteology and mutual relationships of the fishes
SHIINO, S. M.                                                          belonging to'the family Scombridae. J. Morphol. 21:
    1972. List of English names of Japanese fishes with prop-           77-99.
      osition of new names. [In Jpn. and Engl.] Sci. Rep.            1918. The mackerel and mackerel-like fishes of Califor-
      Shima Marineland, No.1, 210 p.                                    nia. Calif. Fish Game 4:118-129.
    1976. List of common names of fishes of the world, those     STASSANO, E.
      prevailing among English-speaking nations. Sci. Rep.           1890. La pesca sulle spiagge atlantiche del Sahara. An.
      Shima Marineland, No.4, 252 p.                                    Agr. Roma 1890:7-59.
SILAS, E. G.                                                     STEAD, D. G.
    1963. Synopsis of biological data on double-lined mackerel       1906. Fishes ofAustralia: A popular and systematic guide
      Grammatorcynus bicarinatus (Quoy and Gaimard) (Indo-             to the study ofwealth within om: waters. Wm. Brooks &
      Pacific). FAO Fish. Rep. 6:811-833.                              Co., Sydney, 278 p.
    1964. Cybium croockewitii Bleeker (1850) and C. kore-            1908. The edible fishes of New South Wales: Their present
      anum Kishinouye (1915) considered synonyms of Scom-              importance and their potentialities. Gov. Printer, Syd-
      beromorus guttatus (Bloch and Schneider) with a rede-            ney, 123 p.
      scription and annotated bibliography of S. guttatus.       STEINDACHNER, F., AND L. OODERLEIN.
      Proc. Symp. Scombroid Fishes, Mar. BioI. Assoc. India,         1884. Beitriige zur Kenntniss der Fische Japan's [III].
      Symp. Ser. l<Part 1):309-342.                                    Denkschr. Akad. WISS. Wien 49:171-212.
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                                                                                                                              689
                                            APPENDIX L
1) Posterodorsal spine of hyomandibula (Fig.          11) Relative size of scapular foramen (Fig. 43).
27). Plesiomorphous condition: absent. Char-          Plesiomorphous condition: medium-sized. Char-
acter states: o(absent) , l(present and small), 2     acter states: O(large), l(medium), 2(small).
(large).
                                                      12) Pineal foramen (Figs. 11-13). Plesiomor-
2) Palatine tooth patch (Fig. 26). Plesiomor-         phous condition: present. Character states: 0
phous condition: wide. Character states: O(wide),     (present), l(reduced), 2(absent).
l(narrow), 2(very narrow).
                                                      13) Anterior ends of pterosphenoids (Figs. 17-
3) Inner process of palatine bone. Plesiomor-         19). Plesiomorphous condition: far apart. Char-
phous condition: short. Character states: O(very      acter states: O(far apart), l(close together).
short, distance from dorsal hook of palatine to end
of inner process 54-72% of length to end of outer     14) Height of supraoccipital crest (Figs. 14-16).
process), l(short, 70-84%), 2(long, 97-99%).          Plesiomorphous condition: low. Character states:
                                                      O(low), l(high).
4) Ventral process of angular (Fig. 25). Ple-
siomorphous condition: short. Character states:       15) Pterotic spine (Figs. 11-13). Plesiomorphous
O(short, 42-80% of length of dorsal process), 1       condition: well developed. Character states: 0
(moderate, 87-93%), 2(long, 117-126%).                (well developed), l(essentially absent).
5) Posterior expansion of maxilla (Fig. 23). Ple-     16) Pelvic girdle: relative length of posterior
siomorphous condition: no expansion. Character        process (Fig. 46). Plesiomorphous condition:
states: O(no posterior expansion of maxilla), 1       short to moderate-sized posterior process. Char-
(slight expansion), 2(moderate expansion), 3          acter states: O(short to moderate posterior process,
(marked expansion).                                   20-50% of length of anterior plate), l(long poste-
                                                      rior process, 62-90% of length of anterior plate).
6) Length of head of maxilla. Plesiomorphous
condition: long. Character states: O(short), 1        17) Spine on intercalar (Figs. 17-19). Plesiomor-
(medium), 2(long), 3(very long).                      phous condition: absent. Character states: O(ab-
                                                      sent), l(moderate length), 2(long).
7) Width of parasphenoid. Plesiomorphous
condition: narrow. Character states: O(narrow),       18) Swim bladder. Plesiomorphous condition:
l(wide).                                              present. Character states: O(present), l(absent).
8) Angle of margins of anterior end ofpremaxilla      19) Curvature of lateral line (Figs. 50, 52, 68).
(Fig. 22). Plesiomorphous condition: blunt.           Plesiomorphous condition: no abrupt curve.
Character states: O(blunt), l(intermediate), 2        Character states: O(no abrupt curve), l(abrupt
(acute).                                              downward curve).
9) Length of ascending process of premaxilla          20) Auxiliary branches offlateralli.ne (Figs. 54,
(Fig. 22). Plesiomorphous condition: moderately       56). Plesiomorphous condition: absent. Char-
long. Character states: O(short), l(moderately        acter states: O(absent), l(present).
long), 2(very long).
                                                      21) Nasal denticles (Fig. 1). Plesiomorphous
10) Vomerine ridge (Figs. 17-19). Plesiomor-          condition: nasal chamber without denticIes.
phous condition: absent. Character states: 0          Character states: O(denticles absent), l(nasal den-
(absent),I(present).                                  ticles present).
690
COLLE'ITE and RUSSO: SPANISH MACKERELS
22) Anterior epibranchial artery (Fig. 7). Ple-       ulate), l(spatulate, extending beyond anterior
siomorphous condition: unmodified. Character          margin of ethmoid complex).
states: O(unmodified), l(esophageal artery arises
from fourth epibranchial), 2(coeliaco-mesenteric      32) Width of lateral wall of cleithrum (Fig.
shunt arises from fourth epibranchial).               43). Plesiomorphous condition: lateral wall nar-
                                                      row. Character states: O(lateral wall narrow,
23) Relative size of foramen between last radial      space between cleithrum and coracoid visible in
and coracoid (Fig. 43). Plesiomorphous condi-         lateral view), l(lateral wall wide, space between
tion: small. Character states: o(small), l(large),    cleithrum and coracoid not visible in lateral view).
2(very large).
                                                      33) Epiotic crests (Figs. 11-13). Plesiomorphous
24) Length ofbranches ofpalatine bone (Fig. 26).      condition: originate behind midfrontal region.
Plesiomorphous condition: ventral branch much         Character states: O(originate behind midfrontal
shorter than dorsal branch. Character states:         region), l(originate on anterior part of frontals).
O(ventral branch much shorter than dorsal branch,
120-123%), l(ventral branch slightly shorter, 112-    34) Vertebrae with inferior foramina. Plesio-
121%), 2(ventral branch equal to or longer than       morphous condition: few. Character states: 0
dorsal branch, 87-107%).                              (few, < 11), l(many, more than 11).
25) Width of supratemporal (Fig. 42). Plesio-         35) Size of first basibranchial. Plesiomorphous
morphous condition: wider than deep. Character        (:ondition: elongate. Character states: O(elon-
states: O(wider than deep, 101-113%), l(deeper        gate),l(short).
than wide, 84-93%), 2(much deeper than wide,
49-79%).                                              36) Strut on fourth pharyngobranchial. Plesio-
                                                      morphous condition: not elongate. Character
26) Width of first postcleithrum (Fig. 44).           states: O(not elongate), l(elongate).
Plesiomorphous condition: wide. Character
states: O(wide, 55-62% of length), l(narrow, 47-      37) Length of symplectic (Fig. 27). Plesiomor-
48%), 2(very narrow, 24-41%).                         phous condition: long. Character states: O(long,
                                                      in contact with metapterygoid), l(short, not in
27) Total number of vertebrae (Table 8). Ple-         contact with metapterygoid).
siomorphous condition: few (31). Character
states: o(few, 31), l(moderate number, 41-56),        38) Size of dorsal and ventral hypohyals (Fig.
2(many, 62-64).                                       29). Plesiomorphous condition: ventral < 3 times
                                                      larger than dorsal. Character states: O(ventral
28) Depth ofurohyal (Fig. 31). Plesiomorphous         hypohyal < 3 times larger than dorsal hypohyal in
condition: moderately deep. Character states:         lateral view), l(ventral hypohyal > 3 times larger
O(shallow), l(moderately deep), 2(deep).              than dorsal).
29) Shape of metapterygoid (Fig. 27). Plesio-         39) Position of fifth branchiostegal ray (Fig.
morphous condition: anterior oblique edge longer      29). Plesiomorphous condition: located on epi-
than posterior horizontal edge. Character states:     hyal. Character states: O(completely on epihyal),
O(anterior oblique edge longer than posterior         l(on suture between epihyal and ceratohyal).
horizontal edge), l(posterior horizontal edge long-
er than anterior oblique edge).                       40) Posttemporal shelf (Fig. 40). Plesiomor-
                                                      phous condition: no shelf present. Character
30) Length of arms of ectopterygoid (Fig. 27).        states: O(no shelf present between dorsal and
Plesiomorphous condition: dorsal arm longer than      ventral arms of posttemporal), l(shelf present).
or equal to ventral arm. Character states: O(dor-
sal arm longer than or equal to ventral arm),         41) Width of supracleithrum (Fig. 41). Plesio-
l(dorsal arm shorter than ventral arm).               morphous condition: wide. Character states: 0
                                                      (wide, 72-75% oflength), l(narrow, 42-62%).
31) Vomer (Figs. 17-19). Plesiomorphous condi-
tion: not spatulate. Character states: O(not spat-    42)   Supratemporal pores (Fig. 42).     Plesiomor-
                                                                                                      691
                                                                             FISHE~Y   BULLETIN: VOL. 82, NO.4
phous condition: no pores. Character states: O(no     51) Anterior process on second postcleithrum
pores), l(pores present on dorsal arm).               (Fig. 45). Plesiomorphous condition: elongate
                                                      process present on anterior margin of second
43) Position of nasals (Figs. 11-13). Plesiomor-      postcleithrum. Character states: O(process pres-
phous condition: protrude beyond ethmoid region.      ent), l(process absent).
Character states: O(protrude far beyond ethmoid
region), l(do not protrude, located adjacent to       52) Anterior end of first postcleithrum (Fig.
ethmoid region).                                      44). Plesiomorphous condition: notched. Char-
                                                      acter states: O(notched), l(pointed).
44) Shape of posterior end of dorsal margin of
urohyal (Fig. 31). Plesiomorphous condition:          53) Position of third pectoral fin radial (Fig.
tripartite. Character states: O(tripartite), 1        43). Plesiomorphous condition: base of third
(forked).                                             radial completely on coracoid. Character states:
                                                      O(completely on coracoid), l(on suture between
45) Glossohyal teeth (Fig. 30). Plesiomorphous        coracoid and scapula).
condition: glossohyal teeth present. Character
states: O(patch of teeth fused to dorsal surface of   54) Tooth shape. Plesiomorphous condition:
glossohyal), l(no glossohyal teeth).                  conical. Character states: O(conical), l(triangu-
                                                      lar and compressed).                   .
46) Width of hyomandibula (Fig. 27). Plesio-
morphous condition: narrow. Character states:         55) Parasphenoid contour. Plesiomorphous
O(narrow, width 35-36% of length), l(wide, width      condition: concave ventrally. Character states:
36-52% oflength).                                     O(concave),l(convex).
47) Angle of lateral and medial arms of fourth        56) Relative length of arms of dentary (Fig.
epibranchial. Plesiomorphous condition: more          24). Plesiomorphous condition: lower arm long-
acute. Character states: O(more acute), l(less        est. Character states: O(lower arm longer than
acute).                                               upper arm), l(upper arm longer than lower arm).
48) Anterior process of second epibranchial.          57) Length of posterior edge of ectopterygoid
Plesiomorphous condition: elongate. Character         (Fig. 27). Plesiomorphous condition: posterior
states: O(elongate), l(not elongate).                 edge long. Character states: O(posterior edge
                                                      long, 64-68% of ventral distance), l(posterior edge
49) Preural centra 2-4 (Fig. 39). Plesio-             short, 41c 63%).
morpho us condition: not shortened and com-
pressed. Character states: O(not compressed),         58) Shape of epihyal (Fig. 29). Plesiomorphous
l(compressed).                                        condition: not much longer than deep. Character
                                                      states: O(depth 68-98% of length), l(much longer
50) Number of vertebrae supporting caudal             than deep, 58-62% oflength).
fin. Plesiomorphous condition: 3 vertebrae sup-
port caudal fin. Character states: 0(3 vertebrae
support caudal), 1(4 or 5 vertebrae).
692