Genomic evidence of recent European introgression into North American farmed and wild Atlantic salmon
Gene flow between wild and domestic populations has been repeatedly demonstrated across a diverse range of taxa. Ultimately, the genetic impacts of gene flow from domestic into wild populations depend both on the degree of domestication and the original source of the domesticated population. Atlanti...
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Online Access: | https://hdl.handle.net/11250/3028902 https://doi.org/10.1111/eva.13454 |
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ftunivbergen:oai:bora.uib.no:11250/3028902 2023-05-15T15:31:49+02:00 Genomic evidence of recent European introgression into North American farmed and wild Atlantic salmon Bradbury, Ian R. Lehnert, Sarah Jean Kess, Tony Van Wyngaarden, Mallory Duffy, Steven Messmer, Amber M. Wringe, Brendan Karoliussen, Silje Dempson, J. Brian Fleming, Ian A. Solberg, Monica Favnebøe Glover, Kevin Alan Bentzen, Paul 2022 application/pdf https://hdl.handle.net/11250/3028902 https://doi.org/10.1111/eva.13454 eng eng Wiley Norges forskningsråd: 200510 urn:issn:1752-4571 https://hdl.handle.net/11250/3028902 https://doi.org/10.1111/eva.13454 cristin:2063137 Evolutionary Applications. 2022, 15 (9), 1436-1448. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2022 Her Majesty the Queen in Right of Canada and the Authors Evolutionary Applications 1436-1448 15 9 Journal article Peer reviewed 2022 ftunivbergen https://doi.org/10.1111/eva.13454 2023-03-14T17:38:45Z Gene flow between wild and domestic populations has been repeatedly demonstrated across a diverse range of taxa. Ultimately, the genetic impacts of gene flow from domestic into wild populations depend both on the degree of domestication and the original source of the domesticated population. Atlantic salmon, Salmo salar, used in North American aquaculture are ostensibly of North American origin. However, evidence of European introgression into North American aquaculture salmon has accumulated in recent decades, even though the use of diploid European salmon has never been approved in Canada. The full extent of such introgression as well as the potential impacts on wild salmon in the Northwest Atlantic remains uncertain. Here, we extend previous work comparing North American and European wild salmon (n = 5799) using a 220 K SNP array to quantify levels of recent European introgression into samples of domestic salmon, aquaculture escapees, and wild salmon collected throughout Atlantic Canada. Analysis of North American farmed salmon (n = 403) and escapees (n = 289) displayed significantly elevated levels of European ancestry by comparison with wild individuals (p < 0.001). Of North American farmed salmon sampled between 2011 and 2018, ~17% had more than 10% European ancestry and several individuals exceeded 40% European ancestry. Samples of escaped farmed salmon similarly displayed elevated levels of European ancestry, with two individuals classified as 100% European. Analysis of juvenile salmon collected in rivers proximate to aquaculture locations also revealed evidence of elevated European ancestry and larger admixture tract in comparison to individuals collected at distance from aquaculture. Overall, our results demonstrate that even though diploid European salmon have never been approved for use in Canada, individuals of full and partial European ancestry have been in use over the last decade, and that some of these individuals have escaped and hybridized in the wild. publishedVersion Article in Journal/Newspaper Atlantic salmon Northwest Atlantic Salmo salar University of Bergen: Bergen Open Research Archive (BORA-UiB) Canada Evolutionary Applications 15 9 1436 1448 |
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Open Polar |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
description |
Gene flow between wild and domestic populations has been repeatedly demonstrated across a diverse range of taxa. Ultimately, the genetic impacts of gene flow from domestic into wild populations depend both on the degree of domestication and the original source of the domesticated population. Atlantic salmon, Salmo salar, used in North American aquaculture are ostensibly of North American origin. However, evidence of European introgression into North American aquaculture salmon has accumulated in recent decades, even though the use of diploid European salmon has never been approved in Canada. The full extent of such introgression as well as the potential impacts on wild salmon in the Northwest Atlantic remains uncertain. Here, we extend previous work comparing North American and European wild salmon (n = 5799) using a 220 K SNP array to quantify levels of recent European introgression into samples of domestic salmon, aquaculture escapees, and wild salmon collected throughout Atlantic Canada. Analysis of North American farmed salmon (n = 403) and escapees (n = 289) displayed significantly elevated levels of European ancestry by comparison with wild individuals (p < 0.001). Of North American farmed salmon sampled between 2011 and 2018, ~17% had more than 10% European ancestry and several individuals exceeded 40% European ancestry. Samples of escaped farmed salmon similarly displayed elevated levels of European ancestry, with two individuals classified as 100% European. Analysis of juvenile salmon collected in rivers proximate to aquaculture locations also revealed evidence of elevated European ancestry and larger admixture tract in comparison to individuals collected at distance from aquaculture. Overall, our results demonstrate that even though diploid European salmon have never been approved for use in Canada, individuals of full and partial European ancestry have been in use over the last decade, and that some of these individuals have escaped and hybridized in the wild. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Bradbury, Ian R. Lehnert, Sarah Jean Kess, Tony Van Wyngaarden, Mallory Duffy, Steven Messmer, Amber M. Wringe, Brendan Karoliussen, Silje Dempson, J. Brian Fleming, Ian A. Solberg, Monica Favnebøe Glover, Kevin Alan Bentzen, Paul |
spellingShingle |
Bradbury, Ian R. Lehnert, Sarah Jean Kess, Tony Van Wyngaarden, Mallory Duffy, Steven Messmer, Amber M. Wringe, Brendan Karoliussen, Silje Dempson, J. Brian Fleming, Ian A. Solberg, Monica Favnebøe Glover, Kevin Alan Bentzen, Paul Genomic evidence of recent European introgression into North American farmed and wild Atlantic salmon |
author_facet |
Bradbury, Ian R. Lehnert, Sarah Jean Kess, Tony Van Wyngaarden, Mallory Duffy, Steven Messmer, Amber M. Wringe, Brendan Karoliussen, Silje Dempson, J. Brian Fleming, Ian A. Solberg, Monica Favnebøe Glover, Kevin Alan Bentzen, Paul |
author_sort |
Bradbury, Ian R. |
title |
Genomic evidence of recent European introgression into North American farmed and wild Atlantic salmon |
title_short |
Genomic evidence of recent European introgression into North American farmed and wild Atlantic salmon |
title_full |
Genomic evidence of recent European introgression into North American farmed and wild Atlantic salmon |
title_fullStr |
Genomic evidence of recent European introgression into North American farmed and wild Atlantic salmon |
title_full_unstemmed |
Genomic evidence of recent European introgression into North American farmed and wild Atlantic salmon |
title_sort |
genomic evidence of recent european introgression into north american farmed and wild atlantic salmon |
publisher |
Wiley |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3028902 https://doi.org/10.1111/eva.13454 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Northwest Atlantic Salmo salar |
genre_facet |
Atlantic salmon Northwest Atlantic Salmo salar |
op_source |
Evolutionary Applications 1436-1448 15 9 |
op_relation |
Norges forskningsråd: 200510 urn:issn:1752-4571 https://hdl.handle.net/11250/3028902 https://doi.org/10.1111/eva.13454 cristin:2063137 Evolutionary Applications. 2022, 15 (9), 1436-1448. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2022 Her Majesty the Queen in Right of Canada and the Authors |
op_doi |
https://doi.org/10.1111/eva.13454 |
container_title |
Evolutionary Applications |
container_volume |
15 |
container_issue |
9 |
container_start_page |
1436 |
op_container_end_page |
1448 |
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1766362327404249088 |