Experimental infection of rainbow trout Oncorhynchus mykiss with viral haemorrhagic septicaemia virus isolates from European marine and farmed fishes

Diseases of Aquatic Organisms

Helle Frank Skall¹  Wilhelmina J. Slierendrecht¹  Julie A. King¹  Niels Jørgen Olesen¹ 

关键词: VHSV;    Infection trials;    Rainbow trout;    Pathogenicity;   

DOI  :  10.3354/dao058099

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: The susceptibility of rainbow trout Oncorhynchus mykiss to infection with various isolates of viral haemorrhagic septicaemia virus (VHSV) was examined. A total of 8 experiments with rainbow trout ranging from 0.6 to 6.2 g wasconducted for 139 isolates originating from wild marine fishes in European waters (115 isolates), farmed turbot from Scotland and Ireland (2 isolates), and farmed rainbow trout (22 isolates). The isolates were tested by immersion and/or intraperitonealinjection either as pooled or single isolates. The isolates from wild marine fishes did not cause mortality by immersion while some of the isolates caused mortality when injected. All VHSV isolates from farmed rainbow trout caused significant mortality byimmersion. Currently, pathogenicity trials are the only way to differentiate VHSV isolates from wild marine fishes and farmed rainbow trout. The 2 farmed turbot isolates did not cause mortality by immersion, supporting the view that they originated fromthe marine environment.

【 授权许可】

Unknown