The future looks like the past: Introgression of domesticated Atlantic salmon escapees in a risk assessment framework
Escapes of domesticated fish from aquaculture, followed by interbreeding with wild conspecifics, represent a threat to the genetic integrity and evolutionary trajectory of natural populations. Approximately fifty years of Atlantic salmon production has left an unprecedented legacy of widespread intr...
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Online Access: | https://hdl.handle.net/11250/2684589 https://doi.org/10.1111/faf.12478 |
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ftimr:oai:imr.brage.unit.no:11250/2684589 2023-05-15T15:31:23+02:00 The future looks like the past: Introgression of domesticated Atlantic salmon escapees in a risk assessment framework Glover, Kevin Wennevik, Vidar Hindar, Kjetil Skaala, Øystein Fiske, Peder Solberg, Monica Favnebøe Diserud, Ola Håvard Svåsand, Terje Karlsson, Sten Berg Andersen, Lasse Grefsrud, Ellen Sofie 2020 application/pdf https://hdl.handle.net/11250/2684589 https://doi.org/10.1111/faf.12478 eng eng Fish and Fisheries. 2020, . urn:issn:1467-2960 https://hdl.handle.net/11250/2684589 https://doi.org/10.1111/faf.12478 cristin:1771066 15 Fish and Fisheries Peer reviewed Journal article 2020 ftimr https://doi.org/10.1111/faf.12478 2021-09-23T20:16:05Z Escapes of domesticated fish from aquaculture, followed by interbreeding with wild conspecifics, represent a threat to the genetic integrity and evolutionary trajectory of natural populations. Approximately fifty years of Atlantic salmon production has left an unprecedented legacy of widespread introgression of domesticated escapees in wild Norwegian populations. A major question, however, is whether current aquaculture practice will lead to additional introgression in the near future. As part of the updated Norwegian risk assessment of fish farming, we conducted a risk assessment for further introgression of domesticated escapees in wild populations in Norway. Extensive data of reported numbers of escapees, observed proportions of escapees in rivers, removal of escapees pre‐spawning, and the resilience of wild populations through demographic and genetic status informed the risk assessment. The analysis revealed that rivers in 10 of the 13 aquaculture production zones covering Norway display a moderate or high risk of further introgression of domesticated escapees. This comes in addition to widespread introgression that is already documented. We therefore conclude that so long as aquaculture production continues at its present level and form, there is a moderate‐to‐high risk of further introgression of domesticated salmon in many native populations throughout much of Norway. publishedVersion Article in Journal/Newspaper Atlantic salmon Institute for Marine Research: Brage IMR Norway Fish and Fisheries 21 6 1077 1091 |
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Institute for Marine Research: Brage IMR |
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language |
English |
description |
Escapes of domesticated fish from aquaculture, followed by interbreeding with wild conspecifics, represent a threat to the genetic integrity and evolutionary trajectory of natural populations. Approximately fifty years of Atlantic salmon production has left an unprecedented legacy of widespread introgression of domesticated escapees in wild Norwegian populations. A major question, however, is whether current aquaculture practice will lead to additional introgression in the near future. As part of the updated Norwegian risk assessment of fish farming, we conducted a risk assessment for further introgression of domesticated escapees in wild populations in Norway. Extensive data of reported numbers of escapees, observed proportions of escapees in rivers, removal of escapees pre‐spawning, and the resilience of wild populations through demographic and genetic status informed the risk assessment. The analysis revealed that rivers in 10 of the 13 aquaculture production zones covering Norway display a moderate or high risk of further introgression of domesticated escapees. This comes in addition to widespread introgression that is already documented. We therefore conclude that so long as aquaculture production continues at its present level and form, there is a moderate‐to‐high risk of further introgression of domesticated salmon in many native populations throughout much of Norway. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Glover, Kevin Wennevik, Vidar Hindar, Kjetil Skaala, Øystein Fiske, Peder Solberg, Monica Favnebøe Diserud, Ola Håvard Svåsand, Terje Karlsson, Sten Berg Andersen, Lasse Grefsrud, Ellen Sofie |
spellingShingle |
Glover, Kevin Wennevik, Vidar Hindar, Kjetil Skaala, Øystein Fiske, Peder Solberg, Monica Favnebøe Diserud, Ola Håvard Svåsand, Terje Karlsson, Sten Berg Andersen, Lasse Grefsrud, Ellen Sofie The future looks like the past: Introgression of domesticated Atlantic salmon escapees in a risk assessment framework |
author_facet |
Glover, Kevin Wennevik, Vidar Hindar, Kjetil Skaala, Øystein Fiske, Peder Solberg, Monica Favnebøe Diserud, Ola Håvard Svåsand, Terje Karlsson, Sten Berg Andersen, Lasse Grefsrud, Ellen Sofie |
author_sort |
Glover, Kevin |
title |
The future looks like the past: Introgression of domesticated Atlantic salmon escapees in a risk assessment framework |
title_short |
The future looks like the past: Introgression of domesticated Atlantic salmon escapees in a risk assessment framework |
title_full |
The future looks like the past: Introgression of domesticated Atlantic salmon escapees in a risk assessment framework |
title_fullStr |
The future looks like the past: Introgression of domesticated Atlantic salmon escapees in a risk assessment framework |
title_full_unstemmed |
The future looks like the past: Introgression of domesticated Atlantic salmon escapees in a risk assessment framework |
title_sort |
future looks like the past: introgression of domesticated atlantic salmon escapees in a risk assessment framework |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2684589 https://doi.org/10.1111/faf.12478 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
15 Fish and Fisheries |
op_relation |
Fish and Fisheries. 2020, . urn:issn:1467-2960 https://hdl.handle.net/11250/2684589 https://doi.org/10.1111/faf.12478 cristin:1771066 |
op_doi |
https://doi.org/10.1111/faf.12478 |
container_title |
Fish and Fisheries |
container_volume |
21 |
container_issue |
6 |
container_start_page |
1077 |
op_container_end_page |
1091 |
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1766361886672027648 |