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Epizootiology of Renibacterium salmoninarum , the causal agent of bacterial kidney disease in salmonid fish
Author(s) -
AUSTIN B.,
RAYMENT J. N.
Publication year - 1985
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/j.1365-2761.1985.tb00965.x
Subject(s) - biology , epizootiology , rainbow trout , feces , salmo , kidney , spleen , pathogen , microbiology and biotechnology , fish <actinopterygii> , veterinary medicine , zoology , fishery , virology , immunology , medicine , endocrinology
. By use of a selective medium, Renibacterium salmoninarum was recovered from rainbow trout, Salmo gairdneri Richardson. With asymptomatic animals, small numbers of Renibacterium colonies were recovered only from the anterior part of the kidney; whereas in clinically diseased fish, dense pure culture growth was obtained from kidney, spleen, heart, blood, ascitic fluid and faeces. There was no evidence for the presence of R. salmoninarum in the water or sediment of 56 freshwater fish farms in England and Wales. Nevertheless, laboratory–based experiments showed that the pathogen was excreted in the faeces of clinically diseased fish. Moreover, there was survival of the bacterial cells for up to 21 days in sediment/faecal material.