The Eurasian monogenean Dactylogyrus amphibothrium Wagener, 1857 is reported from the gills of ruffe (Gymnocephalus cernuus) in western Lake Superior. The parasite must have arrived with fish discharged with ship ballast in the mid 1980s. It is the 12th species of monogenean known to have been introduced and established with its host in North America.
All Science Journal Classification (ASJC) codes
- Ecology, Evolution, Behavior and Systematics