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Diseases of Aquatic Organisms

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DAO 76:169-172 (2007)  -  doi:10.3354/dao076169

First report of erythrocytic inclusion body syndrome (EIBS) in chinook salmon Oncorhynchus tshawytscha in Alaska, USA

Theodore R. Meyers*

Alaska Department of Fish and Game, Commercial Fisheries Division, Juneau Fish Pathology Laboratory, PO Box 25526, Juneau, Alaska 99802-5526, USA

ABSTRACT: Juvenile seawater-reared chinook salmon Oncorhynchus tshawytscha at a hatchery on Baranoff Island, Alaska, USA, sustained chronic mortality associated with anemia and mixed infections by various obligate and opportunistic pathogens including a cytoplasmic erythrocytic virus resembling the agent of erythrocytic inclusion body syndrome (EIBS). This is the first case report of EIBS in Alaska and is a range extension of the disease.

KEY WORDS: Erythrocytic inclusion body syndrome · EIBS · Anemia · Chinook salmon

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