Ocean-scale connectivity and life cycle reconstruction in a deep-sea fish
As human exploration and harvesting moves to the high seas, ecological understanding of the deep sea has become a priority, especially in those commercially exploited species whose life cycle, habitat use, and demographic structure remain poorly understood. Here we combine otolith trace element and...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | http://dx.doi.org/10.1139/cjfas-2013-0343 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2013-0343 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2013-0343 |
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crcansciencepubl:10.1139/cjfas-2013-0343 2024-05-19T07:45:07+00:00 Ocean-scale connectivity and life cycle reconstruction in a deep-sea fish Longmore, Craig Trueman, Clive N. Neat, Francis Jorde, Per Erik Knutsen, Halvor Stefanni, Sergio Catarino, Diana Milton, James A. Mariani, Stefano Gillanders, Bronwyn 2014 http://dx.doi.org/10.1139/cjfas-2013-0343 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2013-0343 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2013-0343 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 71, issue 9, page 1312-1323 ISSN 0706-652X 1205-7533 journal-article 2014 crcansciencepubl https://doi.org/10.1139/cjfas-2013-0343 2024-05-02T06:51:25Z As human exploration and harvesting moves to the high seas, ecological understanding of the deep sea has become a priority, especially in those commercially exploited species whose life cycle, habitat use, and demographic structure remain poorly understood. Here we combine otolith trace element and stable isotope analyses with microsatellite data to investigate population structure and connectivity in the migratory deep-sea black scabbardfish (Aphanopus carbo), sampled along a latitudinal gradient spanning much of the known species range in the Northeast Atlantic. In each sampled life stage, otolith trace element and oxygen isotope compositions are similar among fish from different capture locations, but otolith compositions vary greatly between life stages. Oxygen isotope compositions indicate ontogenetic migrations from relatively warm water conditions during larval growth to cooler waters with increasing age. Analysis of microsatellite DNA also suggests lack of genetic structure among the areas sampled. The multidisciplinary approach employed collectively suggests that A. carbo individuals undergo an ocean-scale ontogenetic migration, beginning with spawning in southern, warm-water Macaronesian areas (potentially dominated by Madeira), followed by a large proportion of immature fish moving to and feeding on the continental slope in northern areas. The results lend the first conclusive evidence for defining the life-history circuit of this species and the perception of its stock structure across the North Atlantic. Article in Journal/Newspaper North Atlantic Northeast Atlantic Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 71 9 1312 1323 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
As human exploration and harvesting moves to the high seas, ecological understanding of the deep sea has become a priority, especially in those commercially exploited species whose life cycle, habitat use, and demographic structure remain poorly understood. Here we combine otolith trace element and stable isotope analyses with microsatellite data to investigate population structure and connectivity in the migratory deep-sea black scabbardfish (Aphanopus carbo), sampled along a latitudinal gradient spanning much of the known species range in the Northeast Atlantic. In each sampled life stage, otolith trace element and oxygen isotope compositions are similar among fish from different capture locations, but otolith compositions vary greatly between life stages. Oxygen isotope compositions indicate ontogenetic migrations from relatively warm water conditions during larval growth to cooler waters with increasing age. Analysis of microsatellite DNA also suggests lack of genetic structure among the areas sampled. The multidisciplinary approach employed collectively suggests that A. carbo individuals undergo an ocean-scale ontogenetic migration, beginning with spawning in southern, warm-water Macaronesian areas (potentially dominated by Madeira), followed by a large proportion of immature fish moving to and feeding on the continental slope in northern areas. The results lend the first conclusive evidence for defining the life-history circuit of this species and the perception of its stock structure across the North Atlantic. |
author2 |
Gillanders, Bronwyn |
format |
Article in Journal/Newspaper |
author |
Longmore, Craig Trueman, Clive N. Neat, Francis Jorde, Per Erik Knutsen, Halvor Stefanni, Sergio Catarino, Diana Milton, James A. Mariani, Stefano |
spellingShingle |
Longmore, Craig Trueman, Clive N. Neat, Francis Jorde, Per Erik Knutsen, Halvor Stefanni, Sergio Catarino, Diana Milton, James A. Mariani, Stefano Ocean-scale connectivity and life cycle reconstruction in a deep-sea fish |
author_facet |
Longmore, Craig Trueman, Clive N. Neat, Francis Jorde, Per Erik Knutsen, Halvor Stefanni, Sergio Catarino, Diana Milton, James A. Mariani, Stefano |
author_sort |
Longmore, Craig |
title |
Ocean-scale connectivity and life cycle reconstruction in a deep-sea fish |
title_short |
Ocean-scale connectivity and life cycle reconstruction in a deep-sea fish |
title_full |
Ocean-scale connectivity and life cycle reconstruction in a deep-sea fish |
title_fullStr |
Ocean-scale connectivity and life cycle reconstruction in a deep-sea fish |
title_full_unstemmed |
Ocean-scale connectivity and life cycle reconstruction in a deep-sea fish |
title_sort |
ocean-scale connectivity and life cycle reconstruction in a deep-sea fish |
publisher |
Canadian Science Publishing |
publishDate |
2014 |
url |
http://dx.doi.org/10.1139/cjfas-2013-0343 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2013-0343 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2013-0343 |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 71, issue 9, page 1312-1323 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2013-0343 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
71 |
container_issue |
9 |
container_start_page |
1312 |
op_container_end_page |
1323 |
_version_ |
1799485073646419968 |