Vibrio viscosus in farmed Atlantic salmon Salmo salar in Scotland: field and experimental observations

Diseases of Aquatic Organisms

D. W. Bruno¹  J. Griffiths¹  T. S. Hastings¹  J. Petrie¹ 

关键词: Atlantic salmon;    Salmo salar;    Vibrio viscosus;    Pathology;    Experimental infection;   

DOI  :  10.3354/dao034161

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: Winter mortality occurred in market-sized (2 to 3 kg) Atlantic salmon Salmo salar reared in sea cages in Scottish waters. Many of the fish had skin ulcers. Internally prominent dark-brown petechiae or ecchymotic haemorrhage was observed. Splenomegaly was associated with congestion and widespread necrosis. A Vibrio sp. was isolated from internal organs. Biochemically isolates of the bacterium were similar to a previously described bacterium, Vibrio viscosus, recorded in a phenotypic study from farmed salmon in Norway. This work examines the occurrence of V. viscosus in marine-reared Atlantic salmon for the first time in Scottish waters. An experimental study reproduced the field observations and Koch's postulates were fulfilled. The histopathology associated with natural infection was compared with that in laboratory-infected fish.

【 授权许可】

Unknown