Subtropical pupping ground for a cold-water shark
Porbeagle sharks ( Lamna nasus ) are large pelagic sharks apparently restricted to the cold temperate waters of the northern and southern hemispheres. Despite considerable knowledge of their biology, their pupping (birthing) grounds have never been identified. Pop-up archival transmission tags appli...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing
2010
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Online Access: | http://dx.doi.org/10.1139/f10-020 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-020 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-020 |
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crcansciencepubl:10.1139/f10-020 2024-09-30T14:38:13+00:00 Subtropical pupping ground for a cold-water shark Campana, Steven E. Joyce, Warren Fowler, Mark 2010 http://dx.doi.org/10.1139/f10-020 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-020 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-020 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 5, page 769-773 ISSN 0706-652X 1205-7533 journal-article 2010 crcansciencepubl https://doi.org/10.1139/f10-020 2024-09-05T04:11:14Z Porbeagle sharks ( Lamna nasus ) are large pelagic sharks apparently restricted to the cold temperate waters of the northern and southern hemispheres. Despite considerable knowledge of their biology, their pupping (birthing) grounds have never been identified. Pop-up archival transmission tags applied to 21 sharks off eastern Canada indicated that males and immature sharks of both sexes remained primarily on the continental shelf for periods of up to 348 days after tagging. However, mature female porbeagles migrated up to 2356 km through the winter, at depths down to 1360 m beneath the Gulf Stream, to a subtropical pupping ground in the Sargasso Sea. In addition to this pupping ground being well south of their documented range, the placement of such a key life history stage in international, largely unregulated waters poses problems for the conservation and management of a species that is largely fished in Canadian waters. Article in Journal/Newspaper Lamna nasus Porbeagle Canadian Science Publishing Canada Canadian Journal of Fisheries and Aquatic Sciences 67 5 769 773 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Porbeagle sharks ( Lamna nasus ) are large pelagic sharks apparently restricted to the cold temperate waters of the northern and southern hemispheres. Despite considerable knowledge of their biology, their pupping (birthing) grounds have never been identified. Pop-up archival transmission tags applied to 21 sharks off eastern Canada indicated that males and immature sharks of both sexes remained primarily on the continental shelf for periods of up to 348 days after tagging. However, mature female porbeagles migrated up to 2356 km through the winter, at depths down to 1360 m beneath the Gulf Stream, to a subtropical pupping ground in the Sargasso Sea. In addition to this pupping ground being well south of their documented range, the placement of such a key life history stage in international, largely unregulated waters poses problems for the conservation and management of a species that is largely fished in Canadian waters. |
format |
Article in Journal/Newspaper |
author |
Campana, Steven E. Joyce, Warren Fowler, Mark |
spellingShingle |
Campana, Steven E. Joyce, Warren Fowler, Mark Subtropical pupping ground for a cold-water shark |
author_facet |
Campana, Steven E. Joyce, Warren Fowler, Mark |
author_sort |
Campana, Steven E. |
title |
Subtropical pupping ground for a cold-water shark |
title_short |
Subtropical pupping ground for a cold-water shark |
title_full |
Subtropical pupping ground for a cold-water shark |
title_fullStr |
Subtropical pupping ground for a cold-water shark |
title_full_unstemmed |
Subtropical pupping ground for a cold-water shark |
title_sort |
subtropical pupping ground for a cold-water shark |
publisher |
Canadian Science Publishing |
publishDate |
2010 |
url |
http://dx.doi.org/10.1139/f10-020 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-020 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-020 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Lamna nasus Porbeagle |
genre_facet |
Lamna nasus Porbeagle |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 5, page 769-773 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f10-020 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
67 |
container_issue |
5 |
container_start_page |
769 |
op_container_end_page |
773 |
_version_ |
1811640917340192768 |