Domesticated escapees on the run: The second-generation monitoring programme reports the numbers and proportions of farmed Atlantic salmon in >200 Norwegian rivers annually
Norway is the world’s largest producer of farmed Atlantic salmon and is home to ∼400 rivers containing wild salmon populations. Farmed escapees, a reoccurring challenge of all cage-based marine aquaculture, pose a threat to the genetic integrity, productivity, and evolutionary trajectories of wild p...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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Oxford University Press
2019
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Online Access: | https://hdl.handle.net/1956/23103 https://doi.org/10.1093/icesjms/fsy207 |
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ftunivbergen:oai:bora.uib.no:1956/23103 2023-05-15T15:31:35+02:00 Domesticated escapees on the run: The second-generation monitoring programme reports the numbers and proportions of farmed Atlantic salmon in >200 Norwegian rivers annually Glover, Kevin Urdal, Kurt Næsje, Tor Skoglund, Helge Florø-Larsen, Bjørn Otterå, Håkon Magne Fiske, Peder Heino, Mikko Petteri Aronsen, Tonje Sægrov, Harald Diserud, Ola Håvard Barlaup, Bjørn Torgeir Hindar, Kjetil Bakke, Gunnar O Solberg, Ingrid Lo, Håvard Solberg, Monica Favnebøe Karlsson, Sten Skaala, Øystein Lamberg, Anders Kanstad-Hanssen, Øyvind Muladal, Rune Skilbrei, Ove Tommy Wennevik, Vidar 2019-11-07T12:21:50Z application/pdf https://hdl.handle.net/1956/23103 https://doi.org/10.1093/icesjms/fsy207 eng eng Oxford University Press urn:issn:1054-3139 urn:issn:1095-9289 https://hdl.handle.net/1956/23103 https://doi.org/10.1093/icesjms/fsy207 cristin:1744328 Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright International Council for the Exploration of the Sea 2019 ICES Journal of Marine Science Peer reviewed Journal article 2019 ftunivbergen https://doi.org/10.1093/icesjms/fsy207 2023-03-14T17:43:12Z Norway is the world’s largest producer of farmed Atlantic salmon and is home to ∼400 rivers containing wild salmon populations. Farmed escapees, a reoccurring challenge of all cage-based marine aquaculture, pose a threat to the genetic integrity, productivity, and evolutionary trajectories of wild populations. Escapees have been monitored in Norwegian rivers since 1989, and, a second-generation programme was established in 2014. The new programme includes data from summer angling, autumn angling, broodstock sampling, and snorkelling surveys in >200 rivers, and >25 000 scale samples are analysed annually. In 2014–2017, escapees were observed in two-thirds of rivers surveyed each year, and between 15 and 30 of the rivers had >10% recorded escapees annually. In the period 1989–2017, a reduction in the proportion of escapees in rivers was observed, despite a >6-fold increase in aquaculture production. This reflected improved escape prevention, and possibly changes in production methods that influence post-escape behaviour. On average, populations estimated to experience the greatest genetic introgression from farmed salmon up to 2014 also had the largest proportions of escapees in 2014–2017. Thus, populations already most affected are those at greatest risk of further impacts. These data feed into the annual risk-assessment of Norwegian aquaculture and form the basis for directing mitigation efforts. publishedVersion Article in Journal/Newspaper Atlantic salmon University of Bergen: Bergen Open Research Archive (BORA-UiB) Norway ICES Journal of Marine Science 76 4 1151 1161 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
Norway is the world’s largest producer of farmed Atlantic salmon and is home to ∼400 rivers containing wild salmon populations. Farmed escapees, a reoccurring challenge of all cage-based marine aquaculture, pose a threat to the genetic integrity, productivity, and evolutionary trajectories of wild populations. Escapees have been monitored in Norwegian rivers since 1989, and, a second-generation programme was established in 2014. The new programme includes data from summer angling, autumn angling, broodstock sampling, and snorkelling surveys in >200 rivers, and >25 000 scale samples are analysed annually. In 2014–2017, escapees were observed in two-thirds of rivers surveyed each year, and between 15 and 30 of the rivers had >10% recorded escapees annually. In the period 1989–2017, a reduction in the proportion of escapees in rivers was observed, despite a >6-fold increase in aquaculture production. This reflected improved escape prevention, and possibly changes in production methods that influence post-escape behaviour. On average, populations estimated to experience the greatest genetic introgression from farmed salmon up to 2014 also had the largest proportions of escapees in 2014–2017. Thus, populations already most affected are those at greatest risk of further impacts. These data feed into the annual risk-assessment of Norwegian aquaculture and form the basis for directing mitigation efforts. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Glover, Kevin Urdal, Kurt Næsje, Tor Skoglund, Helge Florø-Larsen, Bjørn Otterå, Håkon Magne Fiske, Peder Heino, Mikko Petteri Aronsen, Tonje Sægrov, Harald Diserud, Ola Håvard Barlaup, Bjørn Torgeir Hindar, Kjetil Bakke, Gunnar O Solberg, Ingrid Lo, Håvard Solberg, Monica Favnebøe Karlsson, Sten Skaala, Øystein Lamberg, Anders Kanstad-Hanssen, Øyvind Muladal, Rune Skilbrei, Ove Tommy Wennevik, Vidar |
spellingShingle |
Glover, Kevin Urdal, Kurt Næsje, Tor Skoglund, Helge Florø-Larsen, Bjørn Otterå, Håkon Magne Fiske, Peder Heino, Mikko Petteri Aronsen, Tonje Sægrov, Harald Diserud, Ola Håvard Barlaup, Bjørn Torgeir Hindar, Kjetil Bakke, Gunnar O Solberg, Ingrid Lo, Håvard Solberg, Monica Favnebøe Karlsson, Sten Skaala, Øystein Lamberg, Anders Kanstad-Hanssen, Øyvind Muladal, Rune Skilbrei, Ove Tommy Wennevik, Vidar Domesticated escapees on the run: The second-generation monitoring programme reports the numbers and proportions of farmed Atlantic salmon in >200 Norwegian rivers annually |
author_facet |
Glover, Kevin Urdal, Kurt Næsje, Tor Skoglund, Helge Florø-Larsen, Bjørn Otterå, Håkon Magne Fiske, Peder Heino, Mikko Petteri Aronsen, Tonje Sægrov, Harald Diserud, Ola Håvard Barlaup, Bjørn Torgeir Hindar, Kjetil Bakke, Gunnar O Solberg, Ingrid Lo, Håvard Solberg, Monica Favnebøe Karlsson, Sten Skaala, Øystein Lamberg, Anders Kanstad-Hanssen, Øyvind Muladal, Rune Skilbrei, Ove Tommy Wennevik, Vidar |
author_sort |
Glover, Kevin |
title |
Domesticated escapees on the run: The second-generation monitoring programme reports the numbers and proportions of farmed Atlantic salmon in >200 Norwegian rivers annually |
title_short |
Domesticated escapees on the run: The second-generation monitoring programme reports the numbers and proportions of farmed Atlantic salmon in >200 Norwegian rivers annually |
title_full |
Domesticated escapees on the run: The second-generation monitoring programme reports the numbers and proportions of farmed Atlantic salmon in >200 Norwegian rivers annually |
title_fullStr |
Domesticated escapees on the run: The second-generation monitoring programme reports the numbers and proportions of farmed Atlantic salmon in >200 Norwegian rivers annually |
title_full_unstemmed |
Domesticated escapees on the run: The second-generation monitoring programme reports the numbers and proportions of farmed Atlantic salmon in >200 Norwegian rivers annually |
title_sort |
domesticated escapees on the run: the second-generation monitoring programme reports the numbers and proportions of farmed atlantic salmon in >200 norwegian rivers annually |
publisher |
Oxford University Press |
publishDate |
2019 |
url |
https://hdl.handle.net/1956/23103 https://doi.org/10.1093/icesjms/fsy207 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
ICES Journal of Marine Science |
op_relation |
urn:issn:1054-3139 urn:issn:1095-9289 https://hdl.handle.net/1956/23103 https://doi.org/10.1093/icesjms/fsy207 cristin:1744328 |
op_rights |
Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright International Council for the Exploration of the Sea 2019 |
op_doi |
https://doi.org/10.1093/icesjms/fsy207 |
container_title |
ICES Journal of Marine Science |
container_volume |
76 |
container_issue |
4 |
container_start_page |
1151 |
op_container_end_page |
1161 |
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1766362111094554624 |