Movement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudes
Movement diversity within species represent an important but often neglected, component of biodiversity that affects ecological and genetic interactions, as well as the productivity of exploited systems. By combining individual tracking data from acoustic telemetry with novel genetic analyses, we de...
Published in: | Journal of Animal Ecology |
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Online Access: | https://hdl.handle.net/11250/3097424 https://doi.org/10.1111/1365-2656.13989 |
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ftimr:oai:imr.brage.unit.no:11250/3097424 2023-11-12T04:10:25+01:00 Movement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudes Strøm, John Fredrik Bøhn, Thomas Skjæraasen, Jon Egil Gjelland, Karl Øystein Karlsen, Ørjan Johansen, Torild Hanebrekke, Tanja Lexau Bjørn, Pål Arne Olsen, Esben Moland 2023 application/pdf https://hdl.handle.net/11250/3097424 https://doi.org/10.1111/1365-2656.13989 eng eng Journal of Animal Ecology. 2023, 92 (10), 1966-1978. urn:issn:0021-8790 https://hdl.handle.net/11250/3097424 https://doi.org/10.1111/1365-2656.13989 cristin:2171532 1966-1978 92 Journal of Animal Ecology 10 Peer reviewed Journal article 2023 ftimr https://doi.org/10.1111/1365-2656.13989 2023-10-25T22:47:27Z Movement diversity within species represent an important but often neglected, component of biodiversity that affects ecological and genetic interactions, as well as the productivity of exploited systems. By combining individual tracking data from acoustic telemetry with novel genetic analyses, we describe the movement diversity of two Atlantic cod Gadus morhua ecotypes in two high-latitude fjord systems: the highly migratory Northeast Arctic cod (NEA cod) that supports the largest cod fishery in the world, and the more sedentary Norwegian coastal cod, which is currently in a depleted state. As predicted, coastal cod displayed a higher level of fjord residency than NEA cod. Of the cod tagged during the spawning season, NEA cod left the fjords permanently to a greater extent and earlier compared to coastal cod, which to a greater extent remained resident and left the fjords temporarily. Despite this overall pattern, horizontal movements atypical for the ecotypes were common with some NEA cod remaining within the fjords year-round and some coastal cod displaying a low fjord fidelity. Fjord residency and exit timing also differed with spawning status and body size, with spawning cod and large individuals tagged during the feeding season more prone to leave the fjords and earlier than non-spawning and smaller individuals. While our results confirm a lower fjord dependency for NEA cod, they highlight a movement diversity within each ecotype and sympatric residency between ecotypes, previously undetected by population-level monitoring. This new knowledge is relevant for the management, which should base their fisheries advice for these interacting ecotypes on their habitat use and seasonal movements. publishedVersion Article in Journal/Newspaper Arctic cod Arctic atlantic cod Gadus morhua Northeast Arctic cod Institute for Marine Research: Brage IMR Arctic Journal of Animal Ecology 92 10 1966 1978 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
Movement diversity within species represent an important but often neglected, component of biodiversity that affects ecological and genetic interactions, as well as the productivity of exploited systems. By combining individual tracking data from acoustic telemetry with novel genetic analyses, we describe the movement diversity of two Atlantic cod Gadus morhua ecotypes in two high-latitude fjord systems: the highly migratory Northeast Arctic cod (NEA cod) that supports the largest cod fishery in the world, and the more sedentary Norwegian coastal cod, which is currently in a depleted state. As predicted, coastal cod displayed a higher level of fjord residency than NEA cod. Of the cod tagged during the spawning season, NEA cod left the fjords permanently to a greater extent and earlier compared to coastal cod, which to a greater extent remained resident and left the fjords temporarily. Despite this overall pattern, horizontal movements atypical for the ecotypes were common with some NEA cod remaining within the fjords year-round and some coastal cod displaying a low fjord fidelity. Fjord residency and exit timing also differed with spawning status and body size, with spawning cod and large individuals tagged during the feeding season more prone to leave the fjords and earlier than non-spawning and smaller individuals. While our results confirm a lower fjord dependency for NEA cod, they highlight a movement diversity within each ecotype and sympatric residency between ecotypes, previously undetected by population-level monitoring. This new knowledge is relevant for the management, which should base their fisheries advice for these interacting ecotypes on their habitat use and seasonal movements. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Strøm, John Fredrik Bøhn, Thomas Skjæraasen, Jon Egil Gjelland, Karl Øystein Karlsen, Ørjan Johansen, Torild Hanebrekke, Tanja Lexau Bjørn, Pål Arne Olsen, Esben Moland |
spellingShingle |
Strøm, John Fredrik Bøhn, Thomas Skjæraasen, Jon Egil Gjelland, Karl Øystein Karlsen, Ørjan Johansen, Torild Hanebrekke, Tanja Lexau Bjørn, Pål Arne Olsen, Esben Moland Movement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudes |
author_facet |
Strøm, John Fredrik Bøhn, Thomas Skjæraasen, Jon Egil Gjelland, Karl Øystein Karlsen, Ørjan Johansen, Torild Hanebrekke, Tanja Lexau Bjørn, Pål Arne Olsen, Esben Moland |
author_sort |
Strøm, John Fredrik |
title |
Movement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudes |
title_short |
Movement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudes |
title_full |
Movement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudes |
title_fullStr |
Movement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudes |
title_full_unstemmed |
Movement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudes |
title_sort |
movement diversity and partial sympatry of coastal and northeast arctic cod ecotypes at high latitudes |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3097424 https://doi.org/10.1111/1365-2656.13989 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic atlantic cod Gadus morhua Northeast Arctic cod |
genre_facet |
Arctic cod Arctic atlantic cod Gadus morhua Northeast Arctic cod |
op_source |
1966-1978 92 Journal of Animal Ecology 10 |
op_relation |
Journal of Animal Ecology. 2023, 92 (10), 1966-1978. urn:issn:0021-8790 https://hdl.handle.net/11250/3097424 https://doi.org/10.1111/1365-2656.13989 cristin:2171532 |
op_doi |
https://doi.org/10.1111/1365-2656.13989 |
container_title |
Journal of Animal Ecology |
container_volume |
92 |
container_issue |
10 |
container_start_page |
1966 |
op_container_end_page |
1978 |
_version_ |
1782329892665294848 |