Connectivity among offshore feeding areas and nearshore spawning grounds; implications for management of migratory fish
Abstract Knowing movement and structure of fish populations is a prerequisite for effective spatial fisheries management. The study evaluates migration patterns and connectivity of two groups of cod (Gadus morhua) associated with offshore feeding and nursery grounds. This was achieved by investigati...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsx103 http://academic.oup.com/icesjms/article-pdf/75/1/148/31236196/fsx103.pdf |
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croxfordunivpr:10.1093/icesjms/fsx103 2023-05-15T16:19:10+02:00 Connectivity among offshore feeding areas and nearshore spawning grounds; implications for management of migratory fish Sólmundsson, Jón Jónsdóttir, Ingibjörg G Ragnarsson, Stefán Á Björnsson, Björn Kaplan, David 2017 http://dx.doi.org/10.1093/icesjms/fsx103 http://academic.oup.com/icesjms/article-pdf/75/1/148/31236196/fsx103.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 75, issue 1, page 148-157 ISSN 1054-3139 1095-9289 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2017 croxfordunivpr https://doi.org/10.1093/icesjms/fsx103 2022-12-29T15:34:29Z Abstract Knowing movement and structure of fish populations is a prerequisite for effective spatial fisheries management. The study evaluates migration patterns and connectivity of two groups of cod (Gadus morhua) associated with offshore feeding and nursery grounds. This was achieved by investigating (i) migration pathways of cod tagged at the feeding areas, (ii) immigration of cod to the areas based on mark-recapture data covering a period of two decades, and (iii) depth and temperature data from data storage tags (DSTs). Despite undertaking long-distance migrations after attaining sexual maturity, the cod aggregations in the two study areas appear to be largely separated from each other. This conclusion is supported by DSTs, indicating that mature fish associated with the two areas occupy different thermal-bathymetric niches. Low levels of connectivity suggest that effective spatial management in the two study areas would preserve fish of different origin. For the highly migratory adults, however, spatial management would need to focus on migration pathways and the areas where the fish are particularly vulnerable to fishing. Article in Journal/Newspaper Gadus morhua Oxford University Press (via Crossref) ICES Journal of Marine Science 75 1 148 157 |
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Open Polar |
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Oxford University Press (via Crossref) |
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croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
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Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Sólmundsson, Jón Jónsdóttir, Ingibjörg G Ragnarsson, Stefán Á Björnsson, Björn Connectivity among offshore feeding areas and nearshore spawning grounds; implications for management of migratory fish |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Knowing movement and structure of fish populations is a prerequisite for effective spatial fisheries management. The study evaluates migration patterns and connectivity of two groups of cod (Gadus morhua) associated with offshore feeding and nursery grounds. This was achieved by investigating (i) migration pathways of cod tagged at the feeding areas, (ii) immigration of cod to the areas based on mark-recapture data covering a period of two decades, and (iii) depth and temperature data from data storage tags (DSTs). Despite undertaking long-distance migrations after attaining sexual maturity, the cod aggregations in the two study areas appear to be largely separated from each other. This conclusion is supported by DSTs, indicating that mature fish associated with the two areas occupy different thermal-bathymetric niches. Low levels of connectivity suggest that effective spatial management in the two study areas would preserve fish of different origin. For the highly migratory adults, however, spatial management would need to focus on migration pathways and the areas where the fish are particularly vulnerable to fishing. |
author2 |
Kaplan, David |
format |
Article in Journal/Newspaper |
author |
Sólmundsson, Jón Jónsdóttir, Ingibjörg G Ragnarsson, Stefán Á Björnsson, Björn |
author_facet |
Sólmundsson, Jón Jónsdóttir, Ingibjörg G Ragnarsson, Stefán Á Björnsson, Björn |
author_sort |
Sólmundsson, Jón |
title |
Connectivity among offshore feeding areas and nearshore spawning grounds; implications for management of migratory fish |
title_short |
Connectivity among offshore feeding areas and nearshore spawning grounds; implications for management of migratory fish |
title_full |
Connectivity among offshore feeding areas and nearshore spawning grounds; implications for management of migratory fish |
title_fullStr |
Connectivity among offshore feeding areas and nearshore spawning grounds; implications for management of migratory fish |
title_full_unstemmed |
Connectivity among offshore feeding areas and nearshore spawning grounds; implications for management of migratory fish |
title_sort |
connectivity among offshore feeding areas and nearshore spawning grounds; implications for management of migratory fish |
publisher |
Oxford University Press (OUP) |
publishDate |
2017 |
url |
http://dx.doi.org/10.1093/icesjms/fsx103 http://academic.oup.com/icesjms/article-pdf/75/1/148/31236196/fsx103.pdf |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
ICES Journal of Marine Science volume 75, issue 1, page 148-157 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/fsx103 |
container_title |
ICES Journal of Marine Science |
container_volume |
75 |
container_issue |
1 |
container_start_page |
148 |
op_container_end_page |
157 |
_version_ |
1766005496483938304 |