Helminth fauna of Bering Sea pinnipeds from Karaginskiy Bay

The helminthological investigations were conducted from May 6 to May 28, 1972 in the Karaginsk Gulf of the Bering Sea. The helminths were collected from 124 specimens of Phoca vitulina largha, 9 specimens of Erignathus barbatus nauticus, 9 specimens of Pusa hispida krascheninnikovi and 9 specimens of Histriophoca fasciata. In all, 23 species, 2 immature and 1 larval form of helminths were recorded. The data are given on the localization of helminths, intensity and extensity of their invasion, pathogenic effect on the host. The age dynamics of the helminths from Phoca vitulina largha was studied. For the first time are reported the trematode Orthosplanchnus pygmaeus, the cestode Diplogonoporus tetrapterus and nematodes Aniskis simplex, Anisakis sp. and Parafilaroides krascheninnikovi in Phoca vitulina largha and the nematodes Anisakis sp. and Phocascaris cystophorae in Pusa hispida krascheninnikovi.