Paragonimus westermani, a lung fluke, lays eggs that are eaten by the first intermediate host, the Antemelania asperata snail. The snail sheds cercariae that infect the second intermediate host, the Sundathelpusa philippina crab, where the fluke develops into metacercariae in the crab's gills.
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LAB ACT 8 - Lung Fluke PDF
Paragonimus westermani, a lung fluke, lays eggs that are eaten by the first intermediate host, the Antemelania asperata snail. The snail sheds cercariae that infect the second intermediate host, the Sundathelpusa philippina crab, where the fluke develops into metacercariae in the crab's gills.