A review of the importance of various areas for northern contingent West-Atlantic mackerel spawning
Abstract The southern Gulf of St. Lawrence (sGSL) is considered to be the dominant spawning area of northern contingent West-Atlantic mackerel (Scomber scombrus). This premise underlies our basic understanding of the stock and its assessment. Because there are however indications of spawning outside...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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Oxford University Press (OUP)
2022
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsac211 https://academic.oup.com/icesjms/article-pdf/80/1/1/48860186/fsac211.pdf |
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croxfordunivpr:10.1093/icesjms/fsac211 2024-10-06T13:50:48+00:00 A review of the importance of various areas for northern contingent West-Atlantic mackerel spawning Van Beveren, Elisabeth Plourde, Stéphane Pepin, Pierre Cogliati, Karen Castonguay, Martin Godø, Olav Rune 2022 http://dx.doi.org/10.1093/icesjms/fsac211 https://academic.oup.com/icesjms/article-pdf/80/1/1/48860186/fsac211.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 80, issue 1, page 1-15 ISSN 1054-3139 1095-9289 journal-article 2022 croxfordunivpr https://doi.org/10.1093/icesjms/fsac211 2024-09-10T04:15:43Z Abstract The southern Gulf of St. Lawrence (sGSL) is considered to be the dominant spawning area of northern contingent West-Atlantic mackerel (Scomber scombrus). This premise underlies our basic understanding of the stock and its assessment. Because there are however indications of spawning outside the sGSL, we aimed to review the potential importance of various external regions for spawning, based on a weight of evidence approach. Fundamentally, important spawning areas can only exist where there is evidence of a considerable spawning stock biomass being present when environmental conditions are suitable for spawning. This should lead to direct observations of significant egg and larval densities. Based on an ensemble of evidence (migration patterns, environmental conditions, and ichthyoplankton observations), we investigated the dominance of the sGSL for northern contingent mackerel spawning. Elsewhere, such as on the Scotian Shelf, where mackerel starts its spring migration, there is evidence of minor but relatively consistent egg production. Spawning off Newfoundland, where mackerel can migrate to later in the year, appears sporadic and highly variable in intensity. This review should alleviate some of the uncertainty associated with the mackerel stock assessments and be a baseline to further our knowledge on mackerel spatial spawning dynamics. Article in Journal/Newspaper Newfoundland Oxford University Press ICES Journal of Marine Science |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract The southern Gulf of St. Lawrence (sGSL) is considered to be the dominant spawning area of northern contingent West-Atlantic mackerel (Scomber scombrus). This premise underlies our basic understanding of the stock and its assessment. Because there are however indications of spawning outside the sGSL, we aimed to review the potential importance of various external regions for spawning, based on a weight of evidence approach. Fundamentally, important spawning areas can only exist where there is evidence of a considerable spawning stock biomass being present when environmental conditions are suitable for spawning. This should lead to direct observations of significant egg and larval densities. Based on an ensemble of evidence (migration patterns, environmental conditions, and ichthyoplankton observations), we investigated the dominance of the sGSL for northern contingent mackerel spawning. Elsewhere, such as on the Scotian Shelf, where mackerel starts its spring migration, there is evidence of minor but relatively consistent egg production. Spawning off Newfoundland, where mackerel can migrate to later in the year, appears sporadic and highly variable in intensity. This review should alleviate some of the uncertainty associated with the mackerel stock assessments and be a baseline to further our knowledge on mackerel spatial spawning dynamics. |
author2 |
Godø, Olav Rune |
format |
Article in Journal/Newspaper |
author |
Van Beveren, Elisabeth Plourde, Stéphane Pepin, Pierre Cogliati, Karen Castonguay, Martin |
spellingShingle |
Van Beveren, Elisabeth Plourde, Stéphane Pepin, Pierre Cogliati, Karen Castonguay, Martin A review of the importance of various areas for northern contingent West-Atlantic mackerel spawning |
author_facet |
Van Beveren, Elisabeth Plourde, Stéphane Pepin, Pierre Cogliati, Karen Castonguay, Martin |
author_sort |
Van Beveren, Elisabeth |
title |
A review of the importance of various areas for northern contingent West-Atlantic mackerel spawning |
title_short |
A review of the importance of various areas for northern contingent West-Atlantic mackerel spawning |
title_full |
A review of the importance of various areas for northern contingent West-Atlantic mackerel spawning |
title_fullStr |
A review of the importance of various areas for northern contingent West-Atlantic mackerel spawning |
title_full_unstemmed |
A review of the importance of various areas for northern contingent West-Atlantic mackerel spawning |
title_sort |
review of the importance of various areas for northern contingent west-atlantic mackerel spawning |
publisher |
Oxford University Press (OUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1093/icesjms/fsac211 https://academic.oup.com/icesjms/article-pdf/80/1/1/48860186/fsac211.pdf |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
ICES Journal of Marine Science volume 80, issue 1, page 1-15 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsac211 |
container_title |
ICES Journal of Marine Science |
_version_ |
1812178939464908800 |