Incidence of pathogenic microorganisms in aquacultured rainbow trout (Oncorhynchus mykiss)

Quantitative levels of six known pathogens (Listeria monocytogenes, Clostridium botulinum, Salmonella species, Vibrio cholerae, Yersinia enterocolitica, and Y. pseudotuberculosis) and aerobic plate counts were measured at five aquaculture facilities. The farmed rainbow trout (Oncorhynchus mykiss) an...

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Bibliographic Details
Published in:Journal of aquatic food product technology 2005, Vol.14 (3), p.95-105
Main Authors: McAdams, T.J, Reinhart, R.G, Fernandes, C.F, Flick, G.J. Jr, Smith, S.A, Hackney, C.R, Libey, G.S, Granata, L.A
Format: Article
Language:English
Subjects:
aerobes
animal pathogenic bacteria
aquaculture
bacterial contamination
bacterial infections
Clostridium botulinum
farmed fish
fish culture
fish farms
food contamination
food pathogens
Freshwater
growing season
Listeria monocytogenes
Listeria spp
microbial detection
Oncorhynchus mykiss
pathogen
plate count
Salmonella
seasonal variation
Trout
Vibrio cholerae
water quality
Yersinia enterocolitica
Yersinia pseudotuberculosis
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Summary:Quantitative levels of six known pathogens (Listeria monocytogenes, Clostridium botulinum, Salmonella species, Vibrio cholerae, Yersinia enterocolitica, and Y. pseudotuberculosis) and aerobic plate counts were measured at five aquaculture facilities. The farmed rainbow trout (Oncorhynchus mykiss) and trout fillets were sampled at two different growing seasons to monitor for microbial hazards. Listeria spp. was identified in both whole trout and trout fillets from all five facilities sampled from both growing seasons. Presumptive Clostridium botulinum spores were also identified from all five facilities for both seasons. The growing season did not affect pathogen levels and there was no evidence that any one aquacultural system was superior to the others. Salmonella spp., Vibrio cholerae, and Yersinia spp. were not isolated from any of the trout samples analyzed.
ISSN:1049-8850
1547-0636
DOI:10.1300/J030v14n03_07