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

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 was conducted for 139 isolates originating from wild marine fishes in European...

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Bibliographic Details
Published in:Diseases of aquatic organisms 2004-03, Vol.58 (2-3), p.99-110
Main Authors: HELLE FRANK SKALL, SLIERENDRECHT, Wilhelmina J, KING, Julie A, OLESEN, Niels Jørgen
Format: Article
Language:English
Subjects:
Animal aquaculture
Animal productions
Animals
Aquaculture
Biological and medical sciences
Disease Susceptibility - veterinary
Disease Susceptibility - virology
Enzyme-Linked Immunosorbent Assay
Europe
Fundamental and applied biological sciences. Psychology
Hemorrhagic Septicemia, Viral - mortality
Hemorrhagic Septicemia, Viral - virology
Immersion
Injections, Intraperitoneal - veterinary
Novirhabdovirus - isolation & purification
Novirhabdovirus - pathogenicity
Oncorhynchus mykiss
Oncorhynchus mykiss - virology
Pisciculture
Seawater
Vertebrate aquaculture
Viral hemorrhagic septicemia virus
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Summary: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 was conducted 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 intraperitoneal injection 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 by immersion. 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 from the marine environment.
ISSN:0177-5103
1616-1580
DOI:10.3354/dao058099