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Experimentally induced marine flexibacteriosis in Atlantic Salmon smolts Salmo salar. I.: Pathogenicity


van Gelderen, R and Carson, J and Nowak, BF, Experimentally induced marine flexibacteriosis in Atlantic Salmon smolts Salmo salar. I.: Pathogenicity, Diseases of Aquatic Organisms, 91, (2) pp. 121-128. ISSN 0177-5103 (2010) [Refereed Article]

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Copyright 2010 Inter-Research

DOI: doi:10.3354/dao02219


Tenacibaculum maritimum causes marine flexibacteriosis in many cultured fish species, including Atlantic salmon Salmo salar in Tasmania, Australia. Several aspects of the pathogenicity of this bacterium were investigated in naive Atlantic salmon smolts using different isolates, growth conditions and doses to produce a model of infection. We found that T. maritimum is pathogenic to Atlantic salmon using either marine Shieh’s or marine Ordal’s culture medium. The use of aeration in broth culture produced a dose effect in challenge due to a ‘clumping’ of the bacteria during culture. The virulence of a strain appears to be connected with this ‘clumping’; the more adherent the cells, the more pathogenic the strain. Differences in virulence between 3 strains was apparent, with 1 of the strains (89/4747) being non-pathogenic and unable to produce disease in the host. The 2 other strains (89/4762, 00/3280) were highly virulent, resulting in 100% mortalities within 3 d. A reproducible model of infection has been established in the present study using strain 89/4762. Results from the present study provide a better insight into the nature of the disease.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Fish pests and diseases
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Aquaculture fin fish (excl. tuna)
UTAS Author:van Gelderen, R (Ms Rebecca van Gelderen)
UTAS Author:Carson, J (Dr Jeremy Carson)
UTAS Author:Nowak, BF (Professor Barbara Nowak)
ID Code:65523
Year Published:2010
Web of Science® Times Cited:10
Deposited By:NC Marine Conservation and Resource Sustainability
Deposited On:2010-11-22
Last Modified:2015-10-01
Downloads:3 View Download Statistics

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