Nodavirus in farmed Atlantic cod Gadus morhua in Norway
Peer reviewed, Journal article
Published version
Permanent lenke
https://hdl.handle.net/1956/3448Utgivelsesdato
2007-09-14Metadata
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Originalversjon
https://doi.org/10.3354/dao01842Sammendrag
Viral encephalopathy and retinopathy (VER) was diagnosed in 5 to 24 g sized farmed Atlantic cod Gadus morhua kept in sea cages at Parisvatn, Hordaland county, on the west coast of Norway. Moderate mortality (10 to 15%) was observed, along with anorexia and abnormal swimming behaviour, such as looping or spiral swimming and reduced coordination. Nodavirus was detected by 2 different real-time RT-PCR assays, and this was later confirmed by immunohistochemistry. This is the first report of an outbreak of VER in farmed cod in Norway, and the first report that VER affect cod exceeding 5 g in size.