MASS MORTALITY IN CULTURED COHO SALMON (ONCORHYNCHUS KISUTCH) DUE TO SAPROLEGNIA PARASITICA COKER

1 October 1992

journal article
Published by Wildlife Disease Association in Journal of Wildlife Diseases

Vol. 28 (4) , 532-536
https://doi.org/10.7589/0090-3558-28.4.532

Abstract

Epizootics of saprolegniasis occurred in 20 to 60 g freshwater-cultured coho salmon (Oncorhynchus kisutch) in Miyagi Prefecture, Japan. Cotton-like mycelia occurred on the body surface of infected fish, especially around the head, the adipose fin and the caudal fin, and aseptate hyphae occurred in the lesions. The hyphae also penetrated into the muscle and blood vessels. The isolated fungus was identified by asexual morphological characteristics as Saprolegnia parasitica (syn. S. diclina Type 1), a known salmonid fish pathogen.

Keywords

HYPHAE
JAPAN
SALMON
FIN
ONCORHYNCHUS
KISUTCH
COHO
SAPROLEGNIA PARASITICA

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