Migration patterns of Greenland halibut in the North Atlantic revealed by a compiled mark–recapture dataset
Abstract Marine fisheries are often allocated to stocks that reflect pragmatic considerations and may not represent the species’ spatial population structure, increasing the risk of mismanagement and unsustainable harvesting. Here we compile mark–recapture data collected across the North Atlantic to...
Published in: | ICES Journal of Marine Science |
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Oxford University Press (OUP)
2022
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsac127 https://academic.oup.com/icesjms/article-pdf/79/6/1902/45294539/fsac127.pdf |
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croxfordunivpr:10.1093/icesjms/fsac127 2023-12-31T10:03:32+01:00 Migration patterns of Greenland halibut in the North Atlantic revealed by a compiled mark–recapture dataset Vihtakari, Mikko Elvarsson, Bjarki Þór Treble, Margaret Nogueira, Adriana Hedges, Kevin Hussey, Nigel E Wheeland, Laura Roy, Denis Ofstad, Lise Helen Hallfredsson, Elvar H Barkley, Amanda Estévez-Barcia, Daniel Nygaard, Rasmus Healey, Brian Steingrund, Petur Johansen, Torild Albert, Ole Thomas Boje, Jesper Secor, David NORSUSTAIN Joint Danish Greenlandic Nordic Council of Ministers 2022 http://dx.doi.org/10.1093/icesjms/fsac127 https://academic.oup.com/icesjms/article-pdf/79/6/1902/45294539/fsac127.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ ICES Journal of Marine Science volume 79, issue 6, page 1902-1917 ISSN 1054-3139 1095-9289 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2022 croxfordunivpr https://doi.org/10.1093/icesjms/fsac127 2023-12-06T09:07:21Z Abstract Marine fisheries are often allocated to stocks that reflect pragmatic considerations and may not represent the species’ spatial population structure, increasing the risk of mismanagement and unsustainable harvesting. Here we compile mark–recapture data collected across the North Atlantic to gain insight into the spatial population structure of Greenland halibut (Reinhardtius hippoglossoides), an issue that has been unresolved for decades. The dataset contains 168130 fish tagged from 1952 to 2021, with 5466 (3.3%) recaptured individuals. Our results indicate that fish tagged at <50 cm body length migrate at higher rates, suggesting that mark–recapture studies on adult individuals underestimate population-level migration rates. We find evidence for migrations across management units in the North Atlantic indicating two regional offshore populations: one in the Northeast Atlantic, where the West Nordic and Northeast Arctic stocks, currently managed separately, likely belong to a single population that spans from the Kara Sea to Southeast Greenland; and one in the Northwest Atlantic where migration was observed between the Newfoundland and Labrador stock and the Northwest Arctic stock in Davis Strait and Baffin Bay. Our findings indicate complex population structure with implications for international and domestic fisheries management of this long-lived species. Article in Journal/Newspaper Arctic Baffin Bay Baffin Bay Baffin Davis Strait Greenland Kara Sea Newfoundland North Atlantic Northeast Atlantic Northwest Atlantic Oxford University Press (via Crossref) ICES Journal of Marine Science |
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Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Vihtakari, Mikko Elvarsson, Bjarki Þór Treble, Margaret Nogueira, Adriana Hedges, Kevin Hussey, Nigel E Wheeland, Laura Roy, Denis Ofstad, Lise Helen Hallfredsson, Elvar H Barkley, Amanda Estévez-Barcia, Daniel Nygaard, Rasmus Healey, Brian Steingrund, Petur Johansen, Torild Albert, Ole Thomas Boje, Jesper Migration patterns of Greenland halibut in the North Atlantic revealed by a compiled mark–recapture dataset |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Marine fisheries are often allocated to stocks that reflect pragmatic considerations and may not represent the species’ spatial population structure, increasing the risk of mismanagement and unsustainable harvesting. Here we compile mark–recapture data collected across the North Atlantic to gain insight into the spatial population structure of Greenland halibut (Reinhardtius hippoglossoides), an issue that has been unresolved for decades. The dataset contains 168130 fish tagged from 1952 to 2021, with 5466 (3.3%) recaptured individuals. Our results indicate that fish tagged at <50 cm body length migrate at higher rates, suggesting that mark–recapture studies on adult individuals underestimate population-level migration rates. We find evidence for migrations across management units in the North Atlantic indicating two regional offshore populations: one in the Northeast Atlantic, where the West Nordic and Northeast Arctic stocks, currently managed separately, likely belong to a single population that spans from the Kara Sea to Southeast Greenland; and one in the Northwest Atlantic where migration was observed between the Newfoundland and Labrador stock and the Northwest Arctic stock in Davis Strait and Baffin Bay. Our findings indicate complex population structure with implications for international and domestic fisheries management of this long-lived species. |
author2 |
Secor, David NORSUSTAIN Joint Danish Greenlandic Nordic Council of Ministers |
format |
Article in Journal/Newspaper |
author |
Vihtakari, Mikko Elvarsson, Bjarki Þór Treble, Margaret Nogueira, Adriana Hedges, Kevin Hussey, Nigel E Wheeland, Laura Roy, Denis Ofstad, Lise Helen Hallfredsson, Elvar H Barkley, Amanda Estévez-Barcia, Daniel Nygaard, Rasmus Healey, Brian Steingrund, Petur Johansen, Torild Albert, Ole Thomas Boje, Jesper |
author_facet |
Vihtakari, Mikko Elvarsson, Bjarki Þór Treble, Margaret Nogueira, Adriana Hedges, Kevin Hussey, Nigel E Wheeland, Laura Roy, Denis Ofstad, Lise Helen Hallfredsson, Elvar H Barkley, Amanda Estévez-Barcia, Daniel Nygaard, Rasmus Healey, Brian Steingrund, Petur Johansen, Torild Albert, Ole Thomas Boje, Jesper |
author_sort |
Vihtakari, Mikko |
title |
Migration patterns of Greenland halibut in the North Atlantic revealed by a compiled mark–recapture dataset |
title_short |
Migration patterns of Greenland halibut in the North Atlantic revealed by a compiled mark–recapture dataset |
title_full |
Migration patterns of Greenland halibut in the North Atlantic revealed by a compiled mark–recapture dataset |
title_fullStr |
Migration patterns of Greenland halibut in the North Atlantic revealed by a compiled mark–recapture dataset |
title_full_unstemmed |
Migration patterns of Greenland halibut in the North Atlantic revealed by a compiled mark–recapture dataset |
title_sort |
migration patterns of greenland halibut in the north atlantic revealed by a compiled mark–recapture dataset |
publisher |
Oxford University Press (OUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1093/icesjms/fsac127 https://academic.oup.com/icesjms/article-pdf/79/6/1902/45294539/fsac127.pdf |
genre |
Arctic Baffin Bay Baffin Bay Baffin Davis Strait Greenland Kara Sea Newfoundland North Atlantic Northeast Atlantic Northwest Atlantic |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Davis Strait Greenland Kara Sea Newfoundland North Atlantic Northeast Atlantic Northwest Atlantic |
op_source |
ICES Journal of Marine Science volume 79, issue 6, page 1902-1917 ISSN 1054-3139 1095-9289 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/icesjms/fsac127 |
container_title |
ICES Journal of Marine Science |
_version_ |
1786822869908455424 |