Echinochasmus

Echinochasmus metacercariae are seen commonly in gills of many freshwater fish in Oregon – dace, chub, pikeminnow, whitefish etc. The immature trematode has a distinct ring of spikes around its oral sucker. Fish are one of the intermediate hosts; the final host is probably a bird.

Distribution: Globally distributed

Detection Methods: Microscopic exam – wet mount

Hosts: Many freshwater fish in Oregon

Target Tissue: Gills