Genetic analyses of ling (Molva molva) in the Northeast Atlantic reveal patterns relevant to stock assessments and management advice
Abstract The ling, Molva molva, is a commercially exploited demersal gadid fish distributed throughout the Northeast Atlantic. Here, we provide the first study of population genetic structure by genotyping 6 geographically distinct samples with 11 microsatellite DNA markers. The results rejected the...
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croxfordunivpr:10.1093/icesjms/fsu135 2024-06-23T07:54:01+00:00 Genetic analyses of ling (Molva molva) in the Northeast Atlantic reveal patterns relevant to stock assessments and management advice Blanco Gonzalez, Enrique Knutsen, Halvor Jorde, Per Erik Glover, Kevin Alan Bergstad, Odd Aksel 2014 http://dx.doi.org/10.1093/icesjms/fsu135 http://academic.oup.com/icesjms/article-pdf/72/2/635/31230156/fsu135.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 72, issue 2, page 635-641 ISSN 1054-3139 1095-9289 journal-article 2014 croxfordunivpr https://doi.org/10.1093/icesjms/fsu135 2024-06-04T06:15:15Z Abstract The ling, Molva molva, is a commercially exploited demersal gadid fish distributed throughout the Northeast Atlantic. Here, we provide the first study of population genetic structure by genotyping 6 geographically distinct samples with 11 microsatellite DNA markers. The results rejected the hypothesis of a single ling stock in the Northeast Atlantic, and rather suggested the existence of two or more groups, with the main grouping represented by a western (comprising Rockall and Iceland) and an eastern group (Faroe Bank, Norway). Significant genetic differences coincide with an expanse of deep water that probably limits connectivity facilitated by migration. Retention in gyres and directional oceanic circulation may also prevent drift and admixture during planktonic life stages. On the other hand, the apparent absence of genetic differentiation within the eastern part of the distribution range indicates gene flow, perhaps by larval drift and migration, over considerable distances. Our findings should contribute to improving stock assessments and monitoring and thus fisheries management advice for the ling. Article in Journal/Newspaper Iceland Northeast Atlantic Oxford University Press Norway Faroe Bank ENVELOPE(-8.667,-8.667,60.917,60.917) ICES Journal of Marine Science 72 2 635 641 |
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Open Polar |
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Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
description |
Abstract The ling, Molva molva, is a commercially exploited demersal gadid fish distributed throughout the Northeast Atlantic. Here, we provide the first study of population genetic structure by genotyping 6 geographically distinct samples with 11 microsatellite DNA markers. The results rejected the hypothesis of a single ling stock in the Northeast Atlantic, and rather suggested the existence of two or more groups, with the main grouping represented by a western (comprising Rockall and Iceland) and an eastern group (Faroe Bank, Norway). Significant genetic differences coincide with an expanse of deep water that probably limits connectivity facilitated by migration. Retention in gyres and directional oceanic circulation may also prevent drift and admixture during planktonic life stages. On the other hand, the apparent absence of genetic differentiation within the eastern part of the distribution range indicates gene flow, perhaps by larval drift and migration, over considerable distances. Our findings should contribute to improving stock assessments and monitoring and thus fisheries management advice for the ling. |
format |
Article in Journal/Newspaper |
author |
Blanco Gonzalez, Enrique Knutsen, Halvor Jorde, Per Erik Glover, Kevin Alan Bergstad, Odd Aksel |
spellingShingle |
Blanco Gonzalez, Enrique Knutsen, Halvor Jorde, Per Erik Glover, Kevin Alan Bergstad, Odd Aksel Genetic analyses of ling (Molva molva) in the Northeast Atlantic reveal patterns relevant to stock assessments and management advice |
author_facet |
Blanco Gonzalez, Enrique Knutsen, Halvor Jorde, Per Erik Glover, Kevin Alan Bergstad, Odd Aksel |
author_sort |
Blanco Gonzalez, Enrique |
title |
Genetic analyses of ling (Molva molva) in the Northeast Atlantic reveal patterns relevant to stock assessments and management advice |
title_short |
Genetic analyses of ling (Molva molva) in the Northeast Atlantic reveal patterns relevant to stock assessments and management advice |
title_full |
Genetic analyses of ling (Molva molva) in the Northeast Atlantic reveal patterns relevant to stock assessments and management advice |
title_fullStr |
Genetic analyses of ling (Molva molva) in the Northeast Atlantic reveal patterns relevant to stock assessments and management advice |
title_full_unstemmed |
Genetic analyses of ling (Molva molva) in the Northeast Atlantic reveal patterns relevant to stock assessments and management advice |
title_sort |
genetic analyses of ling (molva molva) in the northeast atlantic reveal patterns relevant to stock assessments and management advice |
publisher |
Oxford University Press (OUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1093/icesjms/fsu135 http://academic.oup.com/icesjms/article-pdf/72/2/635/31230156/fsu135.pdf |
long_lat |
ENVELOPE(-8.667,-8.667,60.917,60.917) |
geographic |
Norway Faroe Bank |
geographic_facet |
Norway Faroe Bank |
genre |
Iceland Northeast Atlantic |
genre_facet |
Iceland Northeast Atlantic |
op_source |
ICES Journal of Marine Science volume 72, issue 2, page 635-641 ISSN 1054-3139 1095-9289 |
op_doi |
https://doi.org/10.1093/icesjms/fsu135 |
container_title |
ICES Journal of Marine Science |
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72 |
container_issue |
2 |
container_start_page |
635 |
op_container_end_page |
641 |
_version_ |
1802645955513679872 |