Furunculosis in baitfish and its transmission to salmonids

Aeromonas salmonicida subsp. salmonicida was isolated from 4 species of freshwater minnows commonly used as baitfish. Some of the infected baitfish developed deep-seated muscle lesions (furuncles) similar to those seen in salmonids with furunculosis. In non-salmonids, furunculosis has previously bee...

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Bibliographic Details
Published inDiseases of aquatic organisms Vol. 2; no. 3; pp. 163 - 166
Main Authors Ostland, V E, Hicks, B D, Daly, J G
Format Journal Article
LanguageEnglish
Published 30.07.1987
Subjects
Freshwater
Salmonidae
Canada, Ontario
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Summary:Aeromonas salmonicida subsp. salmonicida was isolated from 4 species of freshwater minnows commonly used as baitfish. Some of the infected baitfish developed deep-seated muscle lesions (furuncles) similar to those seen in salmonids with furunculosis. In non-salmonids, furunculosis has previously been associated with superficial ulcerative lesions from which atypical A. salmonicida was usually isolated. This report illustrates the ability of A. salmonicida subsp. salmonicida to cause furunculosis in 4 species of baitfish. It was transmitted from one species of minnow, the common shiner Notropis cornutus , to coho salmon Oncorhynchus kisutch and brook trout Salvelinus fontinalis , demonstrating the potential for baitfish to serve as a reservoir for the horizontal transmission of typical A. salmonicida from non-salmonids to salmonids held in the same body of water.
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ISSN:0177-5103