Connectivity of Greenland halibut in the northwestern Atlantic Ocean inferred from otolith chemistry
Greenland Halibut ( Reinhardtius hippoglossoides ) is a deepwater flatfish having a circumpolar distribution. Understanding the spatial connectivity and migratory patterns of this commercially valuable species is essential for ensuring a sustainable fishery; nonetheless, this information remains rel...
Published in: | Frontiers in Marine Science |
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Online Access: | http://dx.doi.org/10.3389/fmars.2023.1282264 https://www.frontiersin.org/articles/10.3389/fmars.2023.1282264/full |
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crfrontiers:10.3389/fmars.2023.1282264 2024-02-11T10:03:21+01:00 Connectivity of Greenland halibut in the northwestern Atlantic Ocean inferred from otolith chemistry Bassi, Laélien Tremblay, Rejean Morissette, Olivier Sirois, Pascal 2024 http://dx.doi.org/10.3389/fmars.2023.1282264 https://www.frontiersin.org/articles/10.3389/fmars.2023.1282264/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 10 ISSN 2296-7745 Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography journal-article 2024 crfrontiers https://doi.org/10.3389/fmars.2023.1282264 2024-01-26T10:08:34Z Greenland Halibut ( Reinhardtius hippoglossoides ) is a deepwater flatfish having a circumpolar distribution. Understanding the spatial connectivity and migratory patterns of this commercially valuable species is essential for ensuring a sustainable fishery; nonetheless, this information remains relatively scarce for many Greenland Halibut populations. Here we evaluate the connectivity and the population structure of halibut along coastal Greenland and Canada to better characterize the contribution of each production zone to the various stocks found in the northwestern Atlantic Ocean. In 2014 and 2016, we sampled 411 large Greenland Halibut from coastal Nunavut, Labrador, and Greenland. We used the elemental fingerprint (magnesium, strontium, and barium) from the otolith core and margin of the sampled fish to determine spatial differentiation of the source areas of the collected halibut. From the 17 sample sites, margin elemental fingerprint delineated four “elemental sectors”, representing pooled adjacent sites having similar chemistry. Overall, 62% of Greenland Halibut were correctly assigned to their sampled coast. Elemental fingerprint of the otolith cores indicated three chemically distinct natal sources for the captured halibut. The chemical record in the otolith cores suggested a high connectivity of Greenland Halibut in the northwestern Atlantic and a main natal source located potentially along the west coast of Greenland. Given that our results suggest the presence of a large nursery around Disko Bay–Hellefiske Bank, protection measures should be considered for this area. Article in Journal/Newspaper Disko Bay Greenland Nunavut Frontiers (Publisher) Canada Greenland Nunavut Frontiers in Marine Science 10 |
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Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography |
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Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography Bassi, Laélien Tremblay, Rejean Morissette, Olivier Sirois, Pascal Connectivity of Greenland halibut in the northwestern Atlantic Ocean inferred from otolith chemistry |
topic_facet |
Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography |
description |
Greenland Halibut ( Reinhardtius hippoglossoides ) is a deepwater flatfish having a circumpolar distribution. Understanding the spatial connectivity and migratory patterns of this commercially valuable species is essential for ensuring a sustainable fishery; nonetheless, this information remains relatively scarce for many Greenland Halibut populations. Here we evaluate the connectivity and the population structure of halibut along coastal Greenland and Canada to better characterize the contribution of each production zone to the various stocks found in the northwestern Atlantic Ocean. In 2014 and 2016, we sampled 411 large Greenland Halibut from coastal Nunavut, Labrador, and Greenland. We used the elemental fingerprint (magnesium, strontium, and barium) from the otolith core and margin of the sampled fish to determine spatial differentiation of the source areas of the collected halibut. From the 17 sample sites, margin elemental fingerprint delineated four “elemental sectors”, representing pooled adjacent sites having similar chemistry. Overall, 62% of Greenland Halibut were correctly assigned to their sampled coast. Elemental fingerprint of the otolith cores indicated three chemically distinct natal sources for the captured halibut. The chemical record in the otolith cores suggested a high connectivity of Greenland Halibut in the northwestern Atlantic and a main natal source located potentially along the west coast of Greenland. Given that our results suggest the presence of a large nursery around Disko Bay–Hellefiske Bank, protection measures should be considered for this area. |
format |
Article in Journal/Newspaper |
author |
Bassi, Laélien Tremblay, Rejean Morissette, Olivier Sirois, Pascal |
author_facet |
Bassi, Laélien Tremblay, Rejean Morissette, Olivier Sirois, Pascal |
author_sort |
Bassi, Laélien |
title |
Connectivity of Greenland halibut in the northwestern Atlantic Ocean inferred from otolith chemistry |
title_short |
Connectivity of Greenland halibut in the northwestern Atlantic Ocean inferred from otolith chemistry |
title_full |
Connectivity of Greenland halibut in the northwestern Atlantic Ocean inferred from otolith chemistry |
title_fullStr |
Connectivity of Greenland halibut in the northwestern Atlantic Ocean inferred from otolith chemistry |
title_full_unstemmed |
Connectivity of Greenland halibut in the northwestern Atlantic Ocean inferred from otolith chemistry |
title_sort |
connectivity of greenland halibut in the northwestern atlantic ocean inferred from otolith chemistry |
publisher |
Frontiers Media SA |
publishDate |
2024 |
url |
http://dx.doi.org/10.3389/fmars.2023.1282264 https://www.frontiersin.org/articles/10.3389/fmars.2023.1282264/full |
geographic |
Canada Greenland Nunavut |
geographic_facet |
Canada Greenland Nunavut |
genre |
Disko Bay Greenland Nunavut |
genre_facet |
Disko Bay Greenland Nunavut |
op_source |
Frontiers in Marine Science volume 10 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2023.1282264 |
container_title |
Frontiers in Marine Science |
container_volume |
10 |
_version_ |
1790599570524209152 |