Otolith chemistry indicates population structuring by the Antarctic Circumpolar Current
International audience Large-scale transport of seawater in ocean currents may generate spatially complex population structure through the advection of life stages of marine fish species. To test this, we compared the chemistry of otolith nuclei from Patagonian toothfish (Dissostichus eleginoides),...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | https://hal.archives-ouvertes.fr/hal-00218193 https://doi.org/10.1139/F07-158 |
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ftccsdartic:oai:HAL:hal-00218193v1 2023-05-15T13:58:14+02:00 Otolith chemistry indicates population structuring by the Antarctic Circumpolar Current Ashford, Julian, Jones, Cynthia, Hofmann, Eileen, Everson, Inigo Moreno, Carlos, Williams, Richard Duhamel, Guy Biologie des organismes marins et écosystèmes (BOME) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN) 2008 https://hal.archives-ouvertes.fr/hal-00218193 https://doi.org/10.1139/F07-158 en eng HAL CCSD NRC Research Press info:eu-repo/semantics/altIdentifier/doi/10.1139/F07-158 hal-00218193 https://hal.archives-ouvertes.fr/hal-00218193 doi:10.1139/F07-158 ISSN: 0706-652X EISSN: 1205-7533 Canadian Journal of Fisheries and Aquatic Sciences https://hal.archives-ouvertes.fr/hal-00218193 Canadian Journal of Fisheries and Aquatic Sciences, NRC Research Press, 2008, 65 (2), pp.135-146. ⟨10.1139/F07-158⟩ Antarctic Circumpolar Current ACC Otolith chemistry indicates population Dissostichus [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biomolecules [q-bio.BM] [SDV.BID]Life Sciences [q-bio]/Biodiversity info:eu-repo/semantics/article Journal articles 2008 ftccsdartic https://doi.org/10.1139/F07-158 2020-12-26T15:59:45Z International audience Large-scale transport of seawater in ocean currents may generate spatially complex population structure through the advection of life stages of marine fish species. To test this, we compared the chemistry of otolith nuclei from Patagonian toothfish (Dissostichus eleginoides), presently managed as spatially discrete populations corresponding to fishing management areas along the Antarctic Circumpolar Current (ACC), which transports water eastward around the Southern Ocean. The chemistry of otolith nuclei, laid down during early life, differed significantly between fishing areas off South America and the Antarctic and between some Antarctic areas. However, we found significant discrepancies from expectation for a population structure corresponding to fishing areas. We also found evidence of four groups of fish with different early life chemistry: one associated with South America and three Antarctic groups showing mixing consistent with advective transport along the ACC. These results suggest that toothfish populations are structured by their physical environment; population abundance and persistence may rely on a restricted number of breeding members with access to spawning grounds, whereas fisheries may rely substantially on nonbreeding vagrants transported from fishing areas upstream Article in Journal/Newspaper Antarc* Antarctic Patagonian Toothfish Southern Ocean Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Southern Ocean The Antarctic Canadian Journal of Fisheries and Aquatic Sciences 65 2 135 146 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Antarctic Circumpolar Current ACC Otolith chemistry indicates population Dissostichus [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biomolecules [q-bio.BM] [SDV.BID]Life Sciences [q-bio]/Biodiversity |
spellingShingle |
Antarctic Circumpolar Current ACC Otolith chemistry indicates population Dissostichus [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biomolecules [q-bio.BM] [SDV.BID]Life Sciences [q-bio]/Biodiversity Ashford, Julian, Jones, Cynthia, Hofmann, Eileen, Everson, Inigo Moreno, Carlos, Williams, Richard Duhamel, Guy Otolith chemistry indicates population structuring by the Antarctic Circumpolar Current |
topic_facet |
Antarctic Circumpolar Current ACC Otolith chemistry indicates population Dissostichus [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biomolecules [q-bio.BM] [SDV.BID]Life Sciences [q-bio]/Biodiversity |
description |
International audience Large-scale transport of seawater in ocean currents may generate spatially complex population structure through the advection of life stages of marine fish species. To test this, we compared the chemistry of otolith nuclei from Patagonian toothfish (Dissostichus eleginoides), presently managed as spatially discrete populations corresponding to fishing management areas along the Antarctic Circumpolar Current (ACC), which transports water eastward around the Southern Ocean. The chemistry of otolith nuclei, laid down during early life, differed significantly between fishing areas off South America and the Antarctic and between some Antarctic areas. However, we found significant discrepancies from expectation for a population structure corresponding to fishing areas. We also found evidence of four groups of fish with different early life chemistry: one associated with South America and three Antarctic groups showing mixing consistent with advective transport along the ACC. These results suggest that toothfish populations are structured by their physical environment; population abundance and persistence may rely on a restricted number of breeding members with access to spawning grounds, whereas fisheries may rely substantially on nonbreeding vagrants transported from fishing areas upstream |
author2 |
Biologie des organismes marins et écosystèmes (BOME) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN) |
format |
Article in Journal/Newspaper |
author |
Ashford, Julian, Jones, Cynthia, Hofmann, Eileen, Everson, Inigo Moreno, Carlos, Williams, Richard Duhamel, Guy |
author_facet |
Ashford, Julian, Jones, Cynthia, Hofmann, Eileen, Everson, Inigo Moreno, Carlos, Williams, Richard Duhamel, Guy |
author_sort |
Ashford, Julian, |
title |
Otolith chemistry indicates population structuring by the Antarctic Circumpolar Current |
title_short |
Otolith chemistry indicates population structuring by the Antarctic Circumpolar Current |
title_full |
Otolith chemistry indicates population structuring by the Antarctic Circumpolar Current |
title_fullStr |
Otolith chemistry indicates population structuring by the Antarctic Circumpolar Current |
title_full_unstemmed |
Otolith chemistry indicates population structuring by the Antarctic Circumpolar Current |
title_sort |
otolith chemistry indicates population structuring by the antarctic circumpolar current |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.archives-ouvertes.fr/hal-00218193 https://doi.org/10.1139/F07-158 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Patagonian Toothfish Southern Ocean |
genre_facet |
Antarc* Antarctic Patagonian Toothfish Southern Ocean |
op_source |
ISSN: 0706-652X EISSN: 1205-7533 Canadian Journal of Fisheries and Aquatic Sciences https://hal.archives-ouvertes.fr/hal-00218193 Canadian Journal of Fisheries and Aquatic Sciences, NRC Research Press, 2008, 65 (2), pp.135-146. ⟨10.1139/F07-158⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1139/F07-158 hal-00218193 https://hal.archives-ouvertes.fr/hal-00218193 doi:10.1139/F07-158 |
op_doi |
https://doi.org/10.1139/F07-158 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
65 |
container_issue |
2 |
container_start_page |
135 |
op_container_end_page |
146 |
_version_ |
1766266414861123584 |