Parasitized Clam

A circular microscope view of a translucent, striated specimen with small brown internal spots. The specimen is surrounded by many small clear bubbles and fine sediment. Three horizontal pink light flares appear on the right side of the gray circular field.
Label
Parasitized Clam
Artist
Sarah-Kate Srivastava
Description
Shown in the image is the siphon tissue of a coquina clam. It’s a first and second intermediate host to the trematode species Lasiotocus trachinoti before it moves to its definitive host, the Florida Pompano. The clam becomes infected by filtering out the parasite’s eggs from the water column. Sporocysts then form in the clam’s gonads, and many free swimming cercariae emerge and settle in the clam’s siphon tissue as metacercariae. When the clam is ingested by a fish, the metacercariae emerge as adults in the gut of the fish and the life cycle is complete. This particular clam’s tissue is heavily infected by the mesocercariae of this trematode species. Unlike most trematodes, this species is able to encyst and excyst in its host’s tissue, taking on two possible forms.
Type
Microscope
Artist Affiliation
Undergraduate Student
Department
Department of Biological Science
Area of Research
Aquatic Disease Ecology
Research Group Site
The Stewart Merrill RAD Lab
Date
2024