title: Characterization of Mycobacterium salmoniphilum as causal agent of mycobacteriosis in Atlantic salmon, Salmo salar L., from a freshwater recirculation system.
abstract: 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.
authors: Aquainnovo S.A., Puerto Montt, Chile.
authors: L
authors: L
authors: Aro
authors: K
authors: K
authors: Correa
authors: A
authors: A
authors: Martínez
authors: R
authors: R
authors: Ildefonso
authors: J M
authors: JM
authors: Yáñez
mesh_terms: D000818:Animals; D017756:Aquaculture; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism; D002677:Chile / Q000453:epidemiology; D021901:DNA, Intergenic / Q000235:genetics / Q000378:metabolism; D005393:Fish Diseases / Q000453:epidemiology / Q000382:microbiology*; D005618:Fresh Water; D006099:Granuloma / Q000453:epidemiology / Q000382:microbiology / Q000662:veterinary*; D015994:Incidence; D008969:Molecular Sequence Data; D009161:Mycobacterium / Q000235:genetics / Q000302:isolation & purification*; D009164:Mycobacterium Infections / Q000453:epidemiology / Q000382:microbiology / Q000662:veterinary*; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics / Q000378:metabolism; D012336:RNA, Ribosomal, 16S / Q000235:genetics / Q000378:metabolism; D020317:Salmo salar; D017422:Sequence Analysis, DNA / Q000662:veterinary
chemical_list: D001426:Bacterial Proteins; D021901:DNA, Intergenic; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S
keywords: Atlantic salmon; Chile; Mycobacterium salmoniphilum; fresh water; mycobacteriosis; recirculation