An infectious hematopoietic necrosis epizootic in sockeye salmon Oncorhynchus nerka in Weaver Creek spawning channel, Fraser River system, B.C., Canada

An epizootic in sockeye salmon Oncorhynchus nerka fry caused by infectious hematopoietic necrosis (IHN) virus occurred in 1987 in the Weaver Creek spawning channel, British Columbia, Canada. The prevalence of IHN virus in a sockeye fry was highest during the early part of fry migration from the spaw...

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Bibliographic Details
Published in:Diseases of aquatic organisms 1991-01, Vol.6 (3), p.221-226
Main Authors: Traxler, G S, Rankin, J B
Format: Article
Language:English
Subjects:
Brackish
Freshwater
infectious hematopoietic necrosis virus
Marine
Oncorhynchus nerka
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Summary:An epizootic in sockeye salmon Oncorhynchus nerka fry caused by infectious hematopoietic necrosis (IHN) virus occurred in 1987 in the Weaver Creek spawning channel, British Columbia, Canada. The prevalence of IHN virus in a sockeye fry was highest during the early part of fry migration from the spawning channel. Losses of migrating fry were estimated by holding fry for 4 d periods sequentially throughout the migration and observing mortalities. Of the 16.8 million fry migrating from the channel, an estimated 8.3 million likely died of IHN within days of leaving the spawning channel.
ISSN:0177-5103