Behaviour and dive times of Arnoux's beaked whales, Berardius arnuxii , at narrow leads in fast ice
Groups of the little-known Arnoux's beaked whale, Berardius arnuxii, were observed at narrow cracks or leads in sea ice near the Antarctic peninsula during the austral summer of 1992–1993. The whales were grey, had a slightly asymmetric blowhole and blow, and were heavily scarred in adulthood....
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crcansciencepubl:10.1139/z96-045 2023-12-17T10:22:20+01:00 Behaviour and dive times of Arnoux's beaked whales, Berardius arnuxii , at narrow leads in fast ice Hobson, R. P. Martin, A. R. 1996 http://dx.doi.org/10.1139/z96-045 http://www.nrcresearchpress.com/doi/pdf/10.1139/z96-045 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 74, issue 2, page 388-393 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1996 crcansciencepubl https://doi.org/10.1139/z96-045 2023-11-19T13:38:29Z Groups of the little-known Arnoux's beaked whale, Berardius arnuxii, were observed at narrow cracks or leads in sea ice near the Antarctic peninsula during the austral summer of 1992–1993. The whales were grey, had a slightly asymmetric blowhole and blow, and were heavily scarred in adulthood. At least 30 animals were uniquely identified using their scars. Despite often cramped conditions at the breathing holes, the whales were always calm and nonaggressive, reacting to the circumstances with surfacing and submerging behaviour involving little horizontal movement. Seventy dive durations by 17 identified adults were recorded, with a mode of 35–65 min and a maximum of at least 70 min. Eight periods of respiration varied between 1.2 and 6.8 min, with an average of 9.6 blows/min. These breath-hold characteristics confirm B. arnuxii as one of the most accomplished mammalian divers, capable of swimming up to an estimated 7 km between breathing sites in sea ice. Whales moved to and from the observed lead, apparently able to find other breathing sites in what appeared to be unbroken ice. The species seems well adapted to life in ice-covered waters and may be able to exploit food resources inaccessible to other predators in the region. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Sea ice ice covered waters Canadian Science Publishing (via Crossref) Antarctic The Antarctic Antarctic Peninsula Austral Canadian Journal of Zoology 74 2 388 393 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Hobson, R. P. Martin, A. R. Behaviour and dive times of Arnoux's beaked whales, Berardius arnuxii , at narrow leads in fast ice |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Groups of the little-known Arnoux's beaked whale, Berardius arnuxii, were observed at narrow cracks or leads in sea ice near the Antarctic peninsula during the austral summer of 1992–1993. The whales were grey, had a slightly asymmetric blowhole and blow, and were heavily scarred in adulthood. At least 30 animals were uniquely identified using their scars. Despite often cramped conditions at the breathing holes, the whales were always calm and nonaggressive, reacting to the circumstances with surfacing and submerging behaviour involving little horizontal movement. Seventy dive durations by 17 identified adults were recorded, with a mode of 35–65 min and a maximum of at least 70 min. Eight periods of respiration varied between 1.2 and 6.8 min, with an average of 9.6 blows/min. These breath-hold characteristics confirm B. arnuxii as one of the most accomplished mammalian divers, capable of swimming up to an estimated 7 km between breathing sites in sea ice. Whales moved to and from the observed lead, apparently able to find other breathing sites in what appeared to be unbroken ice. The species seems well adapted to life in ice-covered waters and may be able to exploit food resources inaccessible to other predators in the region. |
format |
Article in Journal/Newspaper |
author |
Hobson, R. P. Martin, A. R. |
author_facet |
Hobson, R. P. Martin, A. R. |
author_sort |
Hobson, R. P. |
title |
Behaviour and dive times of Arnoux's beaked whales, Berardius arnuxii , at narrow leads in fast ice |
title_short |
Behaviour and dive times of Arnoux's beaked whales, Berardius arnuxii , at narrow leads in fast ice |
title_full |
Behaviour and dive times of Arnoux's beaked whales, Berardius arnuxii , at narrow leads in fast ice |
title_fullStr |
Behaviour and dive times of Arnoux's beaked whales, Berardius arnuxii , at narrow leads in fast ice |
title_full_unstemmed |
Behaviour and dive times of Arnoux's beaked whales, Berardius arnuxii , at narrow leads in fast ice |
title_sort |
behaviour and dive times of arnoux's beaked whales, berardius arnuxii , at narrow leads in fast ice |
publisher |
Canadian Science Publishing |
publishDate |
1996 |
url |
http://dx.doi.org/10.1139/z96-045 http://www.nrcresearchpress.com/doi/pdf/10.1139/z96-045 |
geographic |
Antarctic The Antarctic Antarctic Peninsula Austral |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Austral |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice ice covered waters |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice ice covered waters |
op_source |
Canadian Journal of Zoology volume 74, issue 2, page 388-393 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z96-045 |
container_title |
Canadian Journal of Zoology |
container_volume |
74 |
container_issue |
2 |
container_start_page |
388 |
op_container_end_page |
393 |
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1785546709517991936 |