Half a century of genetic interaction between farmed and wild Atlantic salmon: status of knowledge and unanswered questions

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dc.contributor.author Glover, Kevin A.
dc.contributor.author Solberg, Monica F.
dc.contributor.author McGinnity, Philip
dc.contributor.author Hindar, Kjetil
dc.contributor.author Verspoor, Eric
dc.contributor.author Coulson, Mark W.
dc.contributor.author Hansen, Michael M.
dc.contributor.author Araki, Hitoshi
dc.contributor.author Skaala, Øystein
dc.contributor.author Svåsand, Terje
dc.date.accessioned 2017-03-27T08:49:47Z
dc.date.available 2017-03-27T08:49:47Z
dc.date.issued 2017-03
dc.identifier.citation Glover, K. A., Solberg, M. F., McGinnity, P., Hindar, K., Verspoor, E., Coulson, M. W., Hansen, M. M., Araki, H., Skaala, Ø and Svåsand, T. (2017) ‘Half a century of genetic interaction between farmed and wild Atlantic salmon: status of knowledge and unanswered questions’, Fish and Fisheries, 2017, pp. 1-38. doi:10.1111/faf.12214 en
dc.identifier.startpage 1 en
dc.identifier.endpage 38 en
dc.identifier.issn 1467-2979
dc.identifier.uri http://hdl.handle.net/10468/3834
dc.identifier.doi 10.1111/faf.12214
dc.description.abstract Atlantic 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. en
dc.description.sponsorship Norges Forskningsråd (Grant Numbers 200510 and 216105); Japan Society for the Promotion of Science (KAKENHI Grant Number JP262921020); Det Frie Forskningsråd (Natural Sciences Grant Number: 1323-00158A); Department of Agriculture, Food and the Marine (Beaufort Marine Research Award) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher John Wiley & Sons Ltd en
dc.rights © 2017, the Authors. Fish and Fisheries published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. en
dc.rights.uri https://creativecommons.org/licenses/by/4.0/ en
dc.subject Aquaculture en
dc.subject Evolution en
dc.subject Fish farming en
dc.subject Fitness en
dc.subject Genetic en
dc.subject Hybrid en
dc.title Half a century of genetic interaction between farmed and wild Atlantic salmon: status of knowledge and unanswered questions en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Philip Mcginnity, Biological, Earth & Environmental Sciences, University College Cork, Cork, Ireland. +353-21-490-3000 Email: p.mcginnity@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2017-03-24T13:40:30Z
dc.description.version Published Version en
dc.internal.rssid 388381180
dc.contributor.funder Norges Forskningsråd en
dc.contributor.funder Nærings- og Fiskeridepartementet en
dc.contributor.funder Japan Society for the Promotion of Science en
dc.contributor.funder Det Frie Forskningsråd en
dc.contributor.funder Department of Agriculture, Food and the Marine en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Fish And Fisheries en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress p.mcginnity@ucc.ie en


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© 2017, the Authors. Fish and Fisheries published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. Except where otherwise noted, this item's license is described as © 2017, the Authors. Fish and Fisheries published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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