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
Main Authors: Skall, Helle Frank, Slierendrecht, W.J., King, J.A., Olesen, Niels Jørgen
Format: Article in Journal/Newspaper
Language:English
Published: 2004
Subjects:
VHSV
infection trials
pathogenicity
rainbow trout
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water
SDG 14 - Life Below Water
Turbot
Online Access:https://orbit.dtu.dk/en/publications/0c2ab3d0-5a43-4b5d-b85e-8780e70de83e
https://doi.org/10.3354/dao058099
Description
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.

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