Topic :
Blue revolution
Blue revolution
What is blue revolution?
• The term "blue revolution" refers to the
remarkable emergence of aquaculture as an
important and highly productive agricultural
activity.
history
• Aquaculture has long been practiced in China
and other places in eastern Asia, where
freshwater fish have been grown as food in
managed ponds for thousands of years. In
recent decades, however, the practice of
aquaculture has spread around the world. Blue
Revolution refers to the time of intense growth
in the worldwide aquaculture industry from
the mid-1960s to present.
• The aquaculture industry has been growing at
an average rate of 9% a year.
Blue revolution
• the water equivalent of the green
revolution
• This movement aimed at increasing
drastically the global food production
using aquaculture. • The world population
• Aquaculture refers to all forms of active hits the mark of 7.8
• culturing of aquatic animals and plants, billion people in 2020
• More population leads
• occurring in marine, brackish or
to more food
freshwaters. requirements .
• usage of fish hatcheries to supply farms
Main points: and enhance livestock is a more
traditional method.
• The world has now advance into the
second stage of the revolution :
• Splicing genes from one fish species to
• It is an attempt to protect marine another
life and to ensure • fish farming (hatchery) medicine and
sufficient seafood for the present vaccines are used to improve the
and future generation. health and nutrition of the fish
• It encourages fish farming and • It also introduced developed ways to
significant increase in the amount increase/improve
of fish . 1. Fertility of fish
• available prices of fish have fallen. 2. Growth rate
3. Resistance to diseases
Fish farming
Genetically engineered fish
Aqua culture
Fish
farming Alga
culture
Non fish
farming Pearl
farming
AquaAqua
cultureculture
goals
The principal goal of aquaculture
science is to develop systems by
which aquatic organisms can be
grown and harvested at high but
sustainable rates, while not
causing unacceptable
environmental damage.
Fish farming
• Commonly cultivated fish
include
• Trout , Salmon
• freshwater fish are most • Various species of fishes
commonly cultivated in are grown in agriculture,
North America and Europe using a variety of
• Most commonly cultivated cultivation systems
fish • Confinement in artificial
• Trout ,Catfish, Carp ponds.
• Fish grown under brackish- • In cages set into larger
water conditions are bodies of water (e.g.
much lesser located in sea)
Northern Europe, America • Fish are fed with a
and New Zealand. nutritious diet to
maximize growth rate.
• Carefully harvested and
processed when fish
become mature.
Fish farming in cages
Environmental impact
benefits
•Aquaculture provides many benefits to people,
mostly through access to a large production of
nutritious, high-quality foods.
•It is anticipated that the world would not have to
face shortage of fish supplies in the next 3 decades.
•Populations of fish can be very productive (fish
are cold-blooded they divert little energy to
maintain their body temperature, hence a large
proportion of their food can be converted into
their growing biomass.
• Oxygen concentrations may
be lowered to unacceptably small
Environmental impact concentrations because of the
consumption of this gas during the
decomposition of waste feed and
demerits animal feces.
• Other impacts are associated with
toxic chemicals that are applied to
• habitat destruction : aquaculture cages in order to prevent
• waste water from the pond pollutes the sea salt them from being colonized or eaten by
• water from the fish farms may seep into the ground, causing an marine organisms.
increased salinity which damages water supply and surrounding • Local waters and species may also
agriculture land. For example, the conversion of tropical become contaminated with antibiotics
mangrove forest into aqua cultural facilities for the raising of and other medicines that may be used
shrimp or prawns results in an extensive loss of natural habitat. to keep animal crops healthy.
This conversion has important consequences for native species, • In addition, non-native species may
and it may damage offshore ecosystems through increased rates escape from aquaculture and establish
of siltation and pollution. In addition, aquaculture operations themselves in new habitats, possibly
often degrade local water quality in various ways. competing with or degrading the habitat
of native species.
•Many farmers have been
displaced from their lands
to make way for
aquaculture
•flow of salt water to the
rice-fields reduces farm
output
•rural households located
near the fish farms face
severe water problems
Algae on Carters beach due to fish farming nearby
Blue revolution in pakistan
Aquaculture in Pakistan is a fast-emerging sector The major tangible outcome of this program was
that has developed over the last decade and has establishment of the first extruded aquafeed mill
gradually evolved from extensive culture to semi- (2013) and tilapia hatchery (2014), which were
intensive farming. Lack of awareness of modern milestones in the history of aquaculture industry
aquaculture techniques and floating aqua feeds of Pakistan. Since these historic breakthroughs,
had been the major impediments in the the aquaculture industry has revolutionized and
development of this sector. A baseline embraced modern technologies.
assessment of the Pakistani Aquaculture Industry
was conducted in early 2012
Progress
For most of aquaculture’s history, production was of a small-scale, artisan
nature. This would begin to change after World War II with the beginning of
the domestication of key species or groups of species that have become the
fundamentals of the modern global seafood market. Today, 50 percent of all
aquaculture production is finfish, 25 percent is aquatic plants, and 25 percent
are crustaceans (shrimp, prawns, crabs) and mollusks (clams, oysters, mussels,
etc.). most commonly farmed species are still carp. But in the last 40 years,
several new classes of species have been added that now greatly contribute to
aquaculture development and trade.
Summary
• Aqua culture can be used to remove hunger from the masses
but necessary measures should be taken such as:
• Deep sea fishing require large investment so government
should provide facilities to the aqua culture farmers
• New technique must be use to ensure better productivity‘
• Better adaptive methods must use to also conserve the
natural habitat.
Any
questions?
Thank you
