Selection against individuals from genetic introgression of escaped farmed salmon in a natural population of Atlantic salmon
The viability of wild Atlantic salmon populations is threatened by genetic introgression from escaped farmed salmon. Farmed Atlantic salmon are genetically improved for important commercial traits and a life in captivity but are poorly adapted to the natural environment. The rate of gene flow from e...
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Online Access: | https://hdl.handle.net/11250/2756567 https://doi.org/10.1111/eva.13213 |
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ftninstnf:oai:brage.nina.no:11250/2756567 2023-05-15T15:28:31+02:00 Selection against individuals from genetic introgression of escaped farmed salmon in a natural population of Atlantic salmon Wacker, Sebastian Aronsen, Tonje Karlsson, Sten Ugedal, Ola Diserud, Ola Håvard Ulvan, Eva Marita Hindar, Kjetil Næsje, Tor Atlantic, northern Norway 2021 application/pdf https://hdl.handle.net/11250/2756567 https://doi.org/10.1111/eva.13213 eng eng Andre: Grieg Seafood Finnmark AS Andre: Statkraft AS Andre: Alta Salmon Fishery Partnership (ALI) Egen institusjon: Norwegian institute for nature research (NINA) Andre: Norwegian Directorate of Fisheries Andre: NRS Farming AS Region Finnmark Andre: Cermaq Norway AS Region Finnmark Andre: Norwegian Environment Agency Evolutionary Applications. 2021, 14 1450-1460. urn:issn:1752-4571 https://hdl.handle.net/11250/2756567 https://doi.org/10.1111/eva.13213 cristin:1911683 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2021 The Authors. CC-BY 1450-1460 14 Evolutionary Applications Rømt oppdrettslaks Escaped farmed salmon Atlantisk laks Atlantic salmon aquaculture farmed salmon genetic introgression Salmo salar survival VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Peer reviewed Journal article 2021 ftninstnf https://doi.org/10.1111/eva.13213 2021-12-23T07:16:53Z The viability of wild Atlantic salmon populations is threatened by genetic introgression from escaped farmed salmon. Farmed Atlantic salmon are genetically improved for important commercial traits and a life in captivity but are poorly adapted to the natural environment. The rate of gene flow from escaped farmed to wild salmon depends on their spawning success and on offspring survival at various life stages. We here investigate relative survival of introgressed juvenile Atlantic salmon (parr) in a river in northern Norway. The studied population has experienced genetic introgression from farmed salmon for about four generations (20 years). We followed two cohorts of parr from the year of hatching (0+) to the age of 2 years (2+). Farmed genetic introgression was quantified at the individual level and on a continuous scale using diagnostic SNPs. Population-level genetic introgression decreased from 0+ to 2+ by 64% (2011 cohort) and 37% (2013 cohort). This change was driven by a 70% (2011 cohort) and 49% (2013 cohort) lower survival from age 0+ to 2+ in introgressed parr compared to parr of wild origin. Our observations show that there is natural selection against genetic introgression with a potential cost of lower productivity. aquaculture, Atlantic salmon, farmed salmon, genetic introgression, Salmo salar, survival publishedVersion Article in Journal/Newspaper Atlantic salmon Northern Norway Salmo salar Norwegian Institute for Nature Research: Brage NINA Norway Evolutionary Applications 14 5 1450 1460 |
institution |
Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
op_collection_id |
ftninstnf |
language |
English |
topic |
Rømt oppdrettslaks Escaped farmed salmon Atlantisk laks Atlantic salmon aquaculture farmed salmon genetic introgression Salmo salar survival VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
spellingShingle |
Rømt oppdrettslaks Escaped farmed salmon Atlantisk laks Atlantic salmon aquaculture farmed salmon genetic introgression Salmo salar survival VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Wacker, Sebastian Aronsen, Tonje Karlsson, Sten Ugedal, Ola Diserud, Ola Håvard Ulvan, Eva Marita Hindar, Kjetil Næsje, Tor Selection against individuals from genetic introgression of escaped farmed salmon in a natural population of Atlantic salmon |
topic_facet |
Rømt oppdrettslaks Escaped farmed salmon Atlantisk laks Atlantic salmon aquaculture farmed salmon genetic introgression Salmo salar survival VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
description |
The viability of wild Atlantic salmon populations is threatened by genetic introgression from escaped farmed salmon. Farmed Atlantic salmon are genetically improved for important commercial traits and a life in captivity but are poorly adapted to the natural environment. The rate of gene flow from escaped farmed to wild salmon depends on their spawning success and on offspring survival at various life stages. We here investigate relative survival of introgressed juvenile Atlantic salmon (parr) in a river in northern Norway. The studied population has experienced genetic introgression from farmed salmon for about four generations (20 years). We followed two cohorts of parr from the year of hatching (0+) to the age of 2 years (2+). Farmed genetic introgression was quantified at the individual level and on a continuous scale using diagnostic SNPs. Population-level genetic introgression decreased from 0+ to 2+ by 64% (2011 cohort) and 37% (2013 cohort). This change was driven by a 70% (2011 cohort) and 49% (2013 cohort) lower survival from age 0+ to 2+ in introgressed parr compared to parr of wild origin. Our observations show that there is natural selection against genetic introgression with a potential cost of lower productivity. aquaculture, Atlantic salmon, farmed salmon, genetic introgression, Salmo salar, survival publishedVersion |
format |
Article in Journal/Newspaper |
author |
Wacker, Sebastian Aronsen, Tonje Karlsson, Sten Ugedal, Ola Diserud, Ola Håvard Ulvan, Eva Marita Hindar, Kjetil Næsje, Tor |
author_facet |
Wacker, Sebastian Aronsen, Tonje Karlsson, Sten Ugedal, Ola Diserud, Ola Håvard Ulvan, Eva Marita Hindar, Kjetil Næsje, Tor |
author_sort |
Wacker, Sebastian |
title |
Selection against individuals from genetic introgression of escaped farmed salmon in a natural population of Atlantic salmon |
title_short |
Selection against individuals from genetic introgression of escaped farmed salmon in a natural population of Atlantic salmon |
title_full |
Selection against individuals from genetic introgression of escaped farmed salmon in a natural population of Atlantic salmon |
title_fullStr |
Selection against individuals from genetic introgression of escaped farmed salmon in a natural population of Atlantic salmon |
title_full_unstemmed |
Selection against individuals from genetic introgression of escaped farmed salmon in a natural population of Atlantic salmon |
title_sort |
selection against individuals from genetic introgression of escaped farmed salmon in a natural population of atlantic salmon |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2756567 https://doi.org/10.1111/eva.13213 |
op_coverage |
Atlantic, northern Norway |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Northern Norway Salmo salar |
genre_facet |
Atlantic salmon Northern Norway Salmo salar |
op_source |
1450-1460 14 Evolutionary Applications |
op_relation |
Andre: Grieg Seafood Finnmark AS Andre: Statkraft AS Andre: Alta Salmon Fishery Partnership (ALI) Egen institusjon: Norwegian institute for nature research (NINA) Andre: Norwegian Directorate of Fisheries Andre: NRS Farming AS Region Finnmark Andre: Cermaq Norway AS Region Finnmark Andre: Norwegian Environment Agency Evolutionary Applications. 2021, 14 1450-1460. urn:issn:1752-4571 https://hdl.handle.net/11250/2756567 https://doi.org/10.1111/eva.13213 cristin:1911683 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2021 The Authors. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1111/eva.13213 |
container_title |
Evolutionary Applications |
container_volume |
14 |
container_issue |
5 |
container_start_page |
1450 |
op_container_end_page |
1460 |
_version_ |
1766358877016686592 |