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Sökning: WFRF:(Jelmert T.) > (2016) > Summer mortalities ...

Summer mortalities and detection of ostreid herpesvirus microvariant in Pacific oysterCrassostrea gigasin Sweden and Norway

S, Mortensen (författare)
Strand, Åsa (författare)
Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
T, Bodvin (författare)
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A, Alfjorden (författare)
CK, Skår (författare)
A, Jelmert (författare)
A, Aspán (författare)
L, Sælemyr (författare)
LJ, Naustvoll (författare)
J, Albretsen (författare)
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 (creator_code:org_t)
Inter-Research Science Center, 2016
2016
Engelska.
Ingår i: Diseases of Aquatic Organisms. - : Inter-Research Science Center. - 0177-5103 .- 1616-1580. ; 117:3, s. 171-176
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • The Pacific oyster Crassostrea gigas has recently expanded its range in Scandinavia. The expansion is presumably a result of northwards larval drift. Massive settlements were recorded in many areas along the Swedish west coast and southern Norway in 2013 and 2014. After the spawning season in 2014, the temperature of the surface water peaked at 24−26°C. After this period, high and sudden mortalities occurred in a Swedish hatchery and in wild populations along the Swedish west coast and south coast of Norway. Surveys and collected data showed that mortalities mainly occurred during 3 wk in September. All size classes were affected, and affected populations displayed a patchy distribution with heavily affected and unaffected populations in close proximity. Flat oysters Ostrea edulis and blue mussels Mytilus edulis were unaffected. Ostreid herpesvirus (OsHV) was detected in moribund Pacific oyster spat as well as in surviving adults. The virus was identified as OsHV-1 μvar. This is the first detection of this variant in Scandinavia, showing that OsHV-1 μvar is present in areas with recent establishments of Pacific oysters, and where there is no aquaculture of this species.

Ämnesord

NATURVETENSKAP  -- Biologi -- Ekologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Ecology (hsv//eng)

Nyckelord

Pacific oysters · Crassostrea gigas · Summer mortalities · Scandinavia · Ostreid herpesvirus · OsHV-1 μvar

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