| isolation and partial characterization of a novel paramyxovirus from the gills of diseased seawater-reared atlantic salmon (salmo salar l). | a formerly undescribed virus has been isolated from the gills of farmed atlantic salmon post-smolts in norway suffering from gill disease. cytopathic effects appeared in rtgill-w1 cells 9 weeks post-inoculation with gill tissue material. virus production continued for an extended period thereafter. light and electron microscopic examination revealed inclusions and replication in the cytoplasm. the viral nucleocapsid consisted of approximately 17 nm thick filaments in a herringbone pattern. certa ... | 2003 | 12867650 |
| phylogenetic position of a paramyxovirus from atlantic salmon salmo salar. | a paramyxovirus has been isolated from atlantic salmon salmo salar suffering from epitheliocystis. this virus does not cause any mortality when used to challenge disease-free salmon, but has been associated with 2 cases of mortality in salmon farms in norway. atlantic salmon paramyxovirus (aspv) has been suggested as a name for the virus. the asp virus is a slow-growing virus in cell cultures (rainbow trout gill cells: rtgill-w1). little is known about its importance and its phylogenetic positio ... | 2004 | 15212287 |
| atlantic salmon paramyxovirus (aspv) infection contributes to proliferative gill inflammation (pgi) in seawater-reared salmo salar. | proliferative gill inflammation (pgi) causes significant losses in farmed atlantic salmon salmo salar l. in norway, especially during the first months following seawater transfer. the aetiology is apparently multifactorial, including infection with chlamydia-like bacteria and atlantic salmon paramyxovirus (aspv). in the present study, gills from diseased fish from 3 farms on the western coast of norway were sampled. the pathological changes were briefly described and the aetiological significanc ... | 2005 | 16385807 |
| the complete genome sequence of the atlantic salmon paramyxovirus (aspv). | the complete rna genome of the atlantic salmon paramyxovirus (aspv), isolated from atlantic salmon suffering from proliferative gill inflammation (pgi), has been determined. the genome is 16,965 nucleotides in length and consists of six nonoverlapping genes in the order 3'- n - p/c/v - m - f - hn - l -5', coding for the nucleocapsid, phospho-, matrix, fusion, hemagglutinin-neuraminidase and large polymerase proteins, respectively. the gene junctions contain highly conserved transcription start a ... | 2008 | 18155122 |
| microbial and pathological findings in farmed atlantic salmon salmo salar with proliferative gill inflammation. | proliferative gill inflammation (pgi) is an important cause of loss in seawater-farmed atlantic salmon in norway. several microbes have been associated with pgi, including the commonly but not exclusively observed inclusions (epitheliocysts) within the gill lamellae related to infection with 'candidatus piscichlamydia salmonis'. atlantic salmon transferred in the spring of 2004 to 12 seawater farms situated in mid- and southwest norway were sampled throughout that year. outbreaks of pgi, as eval ... | 2010 | 21133320 |
| a review of infectious gill disease in marine salmonid fish. | infectious gill diseases of marine salmonid fish present a significant challenge in salmon-farming regions. infectious syndromes or disease conditions affecting marine-farmed salmonids include amoebic gill disease (agd), proliferative gill inflammation (pgi) and tenacibaculosis. pathogens involved include parasites, such as neoparamoeba perurans, bacteria, such as piscichlamydia salmonis and tenacibaculum maritimum, and viruses, such as the atlantic salmon paramyxovirus (aspv). the present level ... | 2011 | 21401646 |
| genetic analysis of paramyxovirus isolates from pacific salmon reveals two independently co-circulating lineages. | viruses with the morphological and biochemical characteristics of the family paramyxoviridae (paramyxoviruses) have been isolated from adult salmon returning to rivers along the pacific coast of north america since 1982. these pacific salmon paramyxoviruses (pspv), which have mainly been isolated from chinook salmon oncorhynchus tshawytscha, grow slowly in established fish cell lines and have not been associated with disease. genetic analysis of a 505-base-pair region of the polymerase gene from ... | 2008 | 19306611 |
| molecular characterisation of atlantic salmon paramyxovirus (aspv): a novel paramyxovirus associated with proliferative gill inflammation. | atlantic salmon paramyxovirus (aspv) was isolated in 1995 from gills of farmed atlantic salmon suffering from proliferative gill inflammation. the complete genome sequence of aspv was determined, revealing a genome 16,968 nucleotides in length consisting of six non-overlapping genes coding for the nucleo- (n), phospho- (p), matrix- (m), fusion- (f), haemagglutinin-neuraminidase- (hn) and large polymerase (l) proteins in the order 3'-n-p-m-f-hn-l-5'. the various conserved features related to viru ... | 2008 | 18304670 |