Show simple item record

dc.contributor.authorGlover, Kevin
dc.contributor.authorSolberg, Monica Favnebøe
dc.contributor.authorMcGinnity, Phil
dc.contributor.authorHindar, Kjetil
dc.contributor.authorVerspoor, Eric
dc.contributor.authorCoulson, Mark W.
dc.contributor.authorHansen, Michael Möller
dc.contributor.authorAraki, Hitoshi
dc.contributor.authorSkaala, Øystein
dc.contributor.authorSvåsand, Terje
dc.description.abstractAtlantic salmon (Salmo salar) is one of the best researched fishes, and its aquaculture plays a global role in the blue revolution. However, since the 1970s, tens of millions of farmed salmon have escaped into the wild. We review current knowledge of genetic interactions and identify the unanswered questions. Native salmon populations are typically genetically distinct from each other and potentially locally adapted. Farmed salmon represent a limited number of wild source populations that have been exposed to ≥12 generations of domestication. Consequently, farmed and wild salmon differ in many traits including molecular-genetic polymorphisms, growth, morphology, life history, behaviour, physiology and gene transcription. Field experiments have demonstrated that the offspring of farmed salmon display lower lifetime fitness in the wild than wild salmon and that following introgression, there is a reduced production of genetically wild salmon and, potentially, of total salmon production. It is a formidable task to estimate introgression of farmed salmon in wild populations where they are not exotic. New methods have revealed introgression in half of ~150 Norwegian populations, with point estimates as high as 47%, and an unweighted average of 6.4% across 109 populations. Outside Norway, introgression remains unquantified, and in all regions, biological changes and the mechanisms driving population-specific impacts remain poorly documented. Nevertheless, existing knowledge shows that the long-term consequences of introgression is expected to lead to changes in life-history traits, reduced population productivity and decreased resilience to future challenges. Only a major reduction in the number of escapees and/or sterility of farmed salmon can eliminate further impacts.nb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjectfish farmingnb_NO
dc.titleHalf a century of genetic interaction between farmed and wild Atlantic salmon: Status of knowledge and unanswered questionsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.subject.nsiVDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920::Akvakultur: 922nb_NO
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480nb_NO
dc.source.journalFish and Fisheriesnb_NO
dc.relation.projectNorges forskningsråd: 216105nb_NO
dc.relation.projectNorwegian Ministry for Trade and Fisheriesnb_NO
dc.relation.projectNorges forskningsråd: 200510nb_NO
dc.relation.projectJSPS KAKENHI: JP26292102nb_NO
dc.relation.projectDanish Council for Independent Researchnb_NO
dc.relation.projectNatural Sciences: 1323-00158Anb_NO
dc.relation.projectBeaufort Marine Research Awardnb_NO
dc.relation.projectIrish Governmentnb_NO
cristin.unitnameAvdeling for akvatisk økologi

Files in this item


This item appears in the following Collection(s)

Show simple item record

Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal