Journal
JOURNAL OF FISH DISEASES
Volume 37, Issue 4, Pages 341-348Publisher
WILEY-BLACKWELL
DOI: 10.1111/jfd.12108
Keywords
recirculation; mycobacteriosis; Atlantic salmon; Mycobacterium salmoniphilum; fresh water; Chile
Funding
- 'Insercion de Capital Humano Avanzado en el Sector Productivo' from CONICYT, Chilean Government [78110108]
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Thirty Atlantic salmon, Salmo salar L., with low corporal condition relative to other fish present in the culture system, were sampled from a freshwater recirculation pisciculture located in Chile. The most characteristic signs and lesions were cachexia and presence of multiple greyish-white granulomas within internal organs. The external and internal lesions, along with the microscopic, histologic and biochemical findings, were consistent with mycobacteriosis. The identification of Mycobacterium salmoniphilum as the causal agent of the lesions was possible through the use of molecular analyses. This study represents the first report of Mycobacterium salmoniphilum in a freshwater recirculation system and the first case of fish mycobacteriosis described in Chile.
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