An oxidase-negative Aeromonas salmonicida was isolated from coho salmon (Oncorhynchus kisutch) suffering from an epizootic of furunculosis at the state hatchery near Belfair, Washington. Typical, oxidase-positive A. salmonicida was isolated concurrently from the same population of fish. Mortality was controlled with medicated feed treatments. Evidence supporting the identification of the two types of A. salmonicida is presented. Methods for the proper identification of oxidase-negative A. salmonicida isolates are evaluated.
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1 January 1991
ISOLATION AND PHENOTYPIC CHARACTERIZATION OF AN OXIDASE-NEGATIVE AEROMONAS SALMONICIDA CAUSING FURUNCULOSIS IN COHO SALMON (ONCORHYNCHUS KISUTCH)
Patrick F. Chapman,
Rocco C. Cipriano,
Jeffrey D. Teska
Journal of Wildlife Diseases
Vol. 27 • No. 1
January 1991
Vol. 27 • No. 1
January 1991
Aeromonas salmonicida
coho salmon
Coomassie Brilliant Blue Agar
cytochrome oxidase
furunculosis
Oncorhynchus kisutch