Identity, Abundance, and Present Status of Populations of White Whales, Delphinapterus leucas , in North America
White whales, Delphinapterus leucas, in the North American arctic number at least 30,000 animals. Largest herds identified are about 10,000 animals in western Hudson Bay, at least as many in Lancaster Sound, and at least 5000 summering in the Beaufort Sea. Hunting in the Canadian arctic has decrease...
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1975
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crcansciencepubl:10.1139/f75-123 2023-12-17T10:24:55+01:00 Identity, Abundance, and Present Status of Populations of White Whales, Delphinapterus leucas , in North America Sergeant, D. E. Brodie, P. F. 1975 http://dx.doi.org/10.1139/f75-123 http://www.nrcresearchpress.com/doi/pdf/10.1139/f75-123 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 32, issue 7, page 1047-1054 ISSN 0015-296X General Medicine journal-article 1975 crcansciencepubl https://doi.org/10.1139/f75-123 2023-11-19T13:39:23Z White whales, Delphinapterus leucas, in the North American arctic number at least 30,000 animals. Largest herds identified are about 10,000 animals in western Hudson Bay, at least as many in Lancaster Sound, and at least 5000 summering in the Beaufort Sea. Hunting in the Canadian arctic has decreased in the last decade from 1000 or more to about 500 annually and is clearly well below sustainable yields except in one locality, Cumberland Sound, where the local population of white whales has never recovered from historic depletion. The species is most vulnerable when concentrated in river estuaries in summer, probably for reproduction. The species’ range has shrunk in the St. Lawrence estuary, a change that can be associated with hydroelectric developments in the last decade. The effects of oil exploration, drilling, and island building in shallow water in the Mackenzie Delta are under study, and developments in oil and gas could have an influence on other populations in the Canadian arctic. Tourism related to this species is increasing, without undue disturbance to date. Article in Journal/Newspaper Arctic Beaufort Sea Cumberland Sound Delphinapterus leucas Hudson Bay Lancaster Sound Mackenzie Delta Canadian Science Publishing (via Crossref) Arctic Hudson Bay Hudson Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Lancaster Sound ENVELOPE(-83.999,-83.999,74.218,74.218) Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) Journal of the Fisheries Research Board of Canada 32 7 1047 1054 |
institution |
Open Polar |
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Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Sergeant, D. E. Brodie, P. F. Identity, Abundance, and Present Status of Populations of White Whales, Delphinapterus leucas , in North America |
topic_facet |
General Medicine |
description |
White whales, Delphinapterus leucas, in the North American arctic number at least 30,000 animals. Largest herds identified are about 10,000 animals in western Hudson Bay, at least as many in Lancaster Sound, and at least 5000 summering in the Beaufort Sea. Hunting in the Canadian arctic has decreased in the last decade from 1000 or more to about 500 annually and is clearly well below sustainable yields except in one locality, Cumberland Sound, where the local population of white whales has never recovered from historic depletion. The species is most vulnerable when concentrated in river estuaries in summer, probably for reproduction. The species’ range has shrunk in the St. Lawrence estuary, a change that can be associated with hydroelectric developments in the last decade. The effects of oil exploration, drilling, and island building in shallow water in the Mackenzie Delta are under study, and developments in oil and gas could have an influence on other populations in the Canadian arctic. Tourism related to this species is increasing, without undue disturbance to date. |
format |
Article in Journal/Newspaper |
author |
Sergeant, D. E. Brodie, P. F. |
author_facet |
Sergeant, D. E. Brodie, P. F. |
author_sort |
Sergeant, D. E. |
title |
Identity, Abundance, and Present Status of Populations of White Whales, Delphinapterus leucas , in North America |
title_short |
Identity, Abundance, and Present Status of Populations of White Whales, Delphinapterus leucas , in North America |
title_full |
Identity, Abundance, and Present Status of Populations of White Whales, Delphinapterus leucas , in North America |
title_fullStr |
Identity, Abundance, and Present Status of Populations of White Whales, Delphinapterus leucas , in North America |
title_full_unstemmed |
Identity, Abundance, and Present Status of Populations of White Whales, Delphinapterus leucas , in North America |
title_sort |
identity, abundance, and present status of populations of white whales, delphinapterus leucas , in north america |
publisher |
Canadian Science Publishing |
publishDate |
1975 |
url |
http://dx.doi.org/10.1139/f75-123 http://www.nrcresearchpress.com/doi/pdf/10.1139/f75-123 |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) ENVELOPE(-83.999,-83.999,74.218,74.218) ENVELOPE(-66.014,-66.014,65.334,65.334) |
geographic |
Arctic Hudson Bay Hudson Mackenzie Delta Lancaster Sound Cumberland Sound |
geographic_facet |
Arctic Hudson Bay Hudson Mackenzie Delta Lancaster Sound Cumberland Sound |
genre |
Arctic Beaufort Sea Cumberland Sound Delphinapterus leucas Hudson Bay Lancaster Sound Mackenzie Delta |
genre_facet |
Arctic Beaufort Sea Cumberland Sound Delphinapterus leucas Hudson Bay Lancaster Sound Mackenzie Delta |
op_source |
Journal of the Fisheries Research Board of Canada volume 32, issue 7, page 1047-1054 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f75-123 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
32 |
container_issue |
7 |
container_start_page |
1047 |
op_container_end_page |
1054 |
_version_ |
1785571433071509504 |