Aquatic birnaviruses, such as infectious pancreatic necrosis virus (IPNV), cause serious diseases in a variety of fish species used worldwide in aquaculture and have also been isolated from a variety of healthy fish and shellfish species. These viruses exhibit a high degree of antigenic heterogeneity and variation in biological properties such as pathogenicity, host range, and temperature of re...

Cell culture for amplification and the techniques most used for identification of salmonid viruses neutralization, immunofluorescence and, to a lesser extent, immunoperoxldase, complen~ent fixation, agglutination, electron microscopy, immunodifussion or radioimmunoassay may soon be replaced by other techniques such as enzyme immunoassays (immunodot and enzyme-linked immunosorbent assay, ELISA) ...

To assess the risk posed by vertical transmission of viral haemorrhagic septicaemia virus, VHSV, in rainbow trout ova, an experimental challenge study was conducted. Prior to the fertilisation process samples of milt and/or ova were infected with VHSV. Virus was not detected from either the fertilised ova or hatched fry. These results indicate that the risk associated with VHSV vertical transmi...

The susceptibility of Atlantic cod (Gadus morhua) and Atlantic Halibut (Hippoglossus hippoglossus) to an Atlantic salmon (Salmo salar) pathogenic isolate of infectious salmon anaemia was investigated. No mortality or clinical signs of infectious salmon anaemia disease were recorded in either species following experimental challenge via intra-peritoneal (i.p.) injection or cohabitation with i.p....