The early marine distribution of Atlantic salmon in the North-east Atlantic: A genetically informed stock-specific synthesis
The survival of Atlantic salmon (Salmo salar), an increasingly rare anadromous species, has declined dramatically during its marine phase, with disproportionate impacts on the poorly understood early post-smolt period. Logistical constraints on collecting oceanic data to inform this issue pose a for...
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Online Access: | https://hdl.handle.net/11250/2823791 https://doi.org/10.1111/faf.12587 |
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ftimr:oai:imr.brage.unit.no:11250/2823791 2023-05-15T15:31:45+02:00 The early marine distribution of Atlantic salmon in the North-east Atlantic: A genetically informed stock-specific synthesis Gilbey, John Utne, Kjell Rong Wennevik, Vidar Beck, Alexander Christian Kausrud, Kyrre Linné Hindar, Kjetil de Leaniz, Carlos Garcia Cherbonnel, Corrine Coughlan, Jamie Cross, Tom F. Dillane, Eileen Ensing, Dennis García-Vázquez, Eva Hole, Lars Robert Holm, Marianne Holst, Jens Christian Jacobsen, Jan Arge Jensen, Arne Johan Karlsson, Sten Ó Maoiléidigh, Niall Mork, Kjell Arne Nielsen, Einar Eg Nøttestad, Leif Primmer, Craig R. Prodöhl, Paulo Prusov, Sergey Stevens, Jamie R. Thomas, Katie Whelan, Ken McGinnity, Philip Verspoor, Eric 2021 application/pdf https://hdl.handle.net/11250/2823791 https://doi.org/10.1111/faf.12587 eng eng EC/FP7/212529 Norges forskningsråd: 280308 Meteorologisk institutt: 181090 Fish and Fisheries. 2021, . urn:issn:1467-2960 https://hdl.handle.net/11250/2823791 https://doi.org/10.1111/faf.12587 cristin:1923304 33 Fish and Fisheries Peer reviewed Journal article 2021 ftimr https://doi.org/10.1111/faf.12587 2021-10-20T22:36:23Z The survival of Atlantic salmon (Salmo salar), an increasingly rare anadromous species, has declined dramatically during its marine phase, with disproportionate impacts on the poorly understood early post-smolt period. Logistical constraints on collecting oceanic data to inform this issue pose a formidable obstacle. To advance understanding of post-smolt distributional ecology in the North-east Atlantic, a comprehensive analysis of existing information was undertaken. Data were synthesized from 385 marine cruises, 10,202 individual trawls, and 9,269 captured post-smolts, spanning three decades and ~4.75 million km2 of ocean, with 3,423 individuals genetically assigned to regional phylogeographic origin. The findings confirm major migrational post-smolt aggregations on the continental shelf-edge off Ireland, Scotland and Norway, and an important marine foraging area in the Norwegian Sea. Genetic analysis shows that aggregational stock composition does not simply reflect distance to natal rivers, with northern phylogeographic stock groups significantly under-represented in sampled high-seas aggregations. It identifies a key foraging habitat for southern European post-smolts located in international waters immediately west of the Vøring Plateau escarpment, potentially exposing them to a high by-catch mortality from extra-territorial pelagic fisheries. Evidence of the differential distribution of regional stocks points to fundamental differences in their migration behaviours and may lead to inter-stock variation in responses to environmental change and marine survival. The study shows that understanding of post-smolt marine ecology, as regards to stock-specific variations in habitat utilization, biological performance and exposure to mortality factors, can be significantly advanced by data integration across studies and exploiting genetic approaches. publishedVersion Article in Journal/Newspaper Atlantic salmon North East Atlantic Norwegian Sea Salmo salar Institute for Marine Research: Brage IMR Norway Norwegian Sea Vøring Plateau ENVELOPE(4.000,4.000,67.000,67.000) Fish and Fisheries 22 6 1274 1306 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
The survival of Atlantic salmon (Salmo salar), an increasingly rare anadromous species, has declined dramatically during its marine phase, with disproportionate impacts on the poorly understood early post-smolt period. Logistical constraints on collecting oceanic data to inform this issue pose a formidable obstacle. To advance understanding of post-smolt distributional ecology in the North-east Atlantic, a comprehensive analysis of existing information was undertaken. Data were synthesized from 385 marine cruises, 10,202 individual trawls, and 9,269 captured post-smolts, spanning three decades and ~4.75 million km2 of ocean, with 3,423 individuals genetically assigned to regional phylogeographic origin. The findings confirm major migrational post-smolt aggregations on the continental shelf-edge off Ireland, Scotland and Norway, and an important marine foraging area in the Norwegian Sea. Genetic analysis shows that aggregational stock composition does not simply reflect distance to natal rivers, with northern phylogeographic stock groups significantly under-represented in sampled high-seas aggregations. It identifies a key foraging habitat for southern European post-smolts located in international waters immediately west of the Vøring Plateau escarpment, potentially exposing them to a high by-catch mortality from extra-territorial pelagic fisheries. Evidence of the differential distribution of regional stocks points to fundamental differences in their migration behaviours and may lead to inter-stock variation in responses to environmental change and marine survival. The study shows that understanding of post-smolt marine ecology, as regards to stock-specific variations in habitat utilization, biological performance and exposure to mortality factors, can be significantly advanced by data integration across studies and exploiting genetic approaches. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Gilbey, John Utne, Kjell Rong Wennevik, Vidar Beck, Alexander Christian Kausrud, Kyrre Linné Hindar, Kjetil de Leaniz, Carlos Garcia Cherbonnel, Corrine Coughlan, Jamie Cross, Tom F. Dillane, Eileen Ensing, Dennis García-Vázquez, Eva Hole, Lars Robert Holm, Marianne Holst, Jens Christian Jacobsen, Jan Arge Jensen, Arne Johan Karlsson, Sten Ó Maoiléidigh, Niall Mork, Kjell Arne Nielsen, Einar Eg Nøttestad, Leif Primmer, Craig R. Prodöhl, Paulo Prusov, Sergey Stevens, Jamie R. Thomas, Katie Whelan, Ken McGinnity, Philip Verspoor, Eric |
spellingShingle |
Gilbey, John Utne, Kjell Rong Wennevik, Vidar Beck, Alexander Christian Kausrud, Kyrre Linné Hindar, Kjetil de Leaniz, Carlos Garcia Cherbonnel, Corrine Coughlan, Jamie Cross, Tom F. Dillane, Eileen Ensing, Dennis García-Vázquez, Eva Hole, Lars Robert Holm, Marianne Holst, Jens Christian Jacobsen, Jan Arge Jensen, Arne Johan Karlsson, Sten Ó Maoiléidigh, Niall Mork, Kjell Arne Nielsen, Einar Eg Nøttestad, Leif Primmer, Craig R. Prodöhl, Paulo Prusov, Sergey Stevens, Jamie R. Thomas, Katie Whelan, Ken McGinnity, Philip Verspoor, Eric The early marine distribution of Atlantic salmon in the North-east Atlantic: A genetically informed stock-specific synthesis |
author_facet |
Gilbey, John Utne, Kjell Rong Wennevik, Vidar Beck, Alexander Christian Kausrud, Kyrre Linné Hindar, Kjetil de Leaniz, Carlos Garcia Cherbonnel, Corrine Coughlan, Jamie Cross, Tom F. Dillane, Eileen Ensing, Dennis García-Vázquez, Eva Hole, Lars Robert Holm, Marianne Holst, Jens Christian Jacobsen, Jan Arge Jensen, Arne Johan Karlsson, Sten Ó Maoiléidigh, Niall Mork, Kjell Arne Nielsen, Einar Eg Nøttestad, Leif Primmer, Craig R. Prodöhl, Paulo Prusov, Sergey Stevens, Jamie R. Thomas, Katie Whelan, Ken McGinnity, Philip Verspoor, Eric |
author_sort |
Gilbey, John |
title |
The early marine distribution of Atlantic salmon in the North-east Atlantic: A genetically informed stock-specific synthesis |
title_short |
The early marine distribution of Atlantic salmon in the North-east Atlantic: A genetically informed stock-specific synthesis |
title_full |
The early marine distribution of Atlantic salmon in the North-east Atlantic: A genetically informed stock-specific synthesis |
title_fullStr |
The early marine distribution of Atlantic salmon in the North-east Atlantic: A genetically informed stock-specific synthesis |
title_full_unstemmed |
The early marine distribution of Atlantic salmon in the North-east Atlantic: A genetically informed stock-specific synthesis |
title_sort |
early marine distribution of atlantic salmon in the north-east atlantic: a genetically informed stock-specific synthesis |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2823791 https://doi.org/10.1111/faf.12587 |
long_lat |
ENVELOPE(4.000,4.000,67.000,67.000) |
geographic |
Norway Norwegian Sea Vøring Plateau |
geographic_facet |
Norway Norwegian Sea Vøring Plateau |
genre |
Atlantic salmon North East Atlantic Norwegian Sea Salmo salar |
genre_facet |
Atlantic salmon North East Atlantic Norwegian Sea Salmo salar |
op_source |
33 Fish and Fisheries |
op_relation |
EC/FP7/212529 Norges forskningsråd: 280308 Meteorologisk institutt: 181090 Fish and Fisheries. 2021, . urn:issn:1467-2960 https://hdl.handle.net/11250/2823791 https://doi.org/10.1111/faf.12587 cristin:1923304 |
op_doi |
https://doi.org/10.1111/faf.12587 |
container_title |
Fish and Fisheries |
container_volume |
22 |
container_issue |
6 |
container_start_page |
1274 |
op_container_end_page |
1306 |
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1766362271349473280 |