Artificial transmission to and susceptibility of Puget Sound fish to viral erythrocytic necrosis (VEN)
In Puget Sound, Wash., the incidence of viral erythrocytic necrosis (VEN) varied geographically from 0 to 17% in chum salmon ( Oncorhynchus keta ) and from 4 to 59% in Pacific herring ( Clupea harengus pallasi ). The disease was experimentally transmitted by intraperitoneal injection to chum, pink ( O . gorbuscha ), coho ( O . kisutch ), chinook ( O . tshawytscha ), sockeye ( O . nerka ), and Atlantic ( Salmo salar ) salmon, and rainbow ( S . gairdneri ), brown ( S . trutta ), and brook ( Salvelinus fontinalis ) trout. The disease was transmitted to chum salmon and brook trout by waterborne virus. Virus obtained from herring was experimentally transmitted into chum salmon by intraperitoneal injection. Key words : viral erythrocytic necrosis, fish disease, transmission