Diving in ringed seal ( Phoca hispida ) pups during the nursing period
In this study, activity and diving performance of nursing ringed seal (Phoca hispida) pups were quantified using time–depth recorders. A total of 1040 h of activity, including 7506 diving cycles, was collected from three female pups. The pups spent 50.3% of their time in the water and 49.7% hauled o...
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1993
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Online Access: | http://dx.doi.org/10.1139/z93-131 http://www.nrcresearchpress.com/doi/pdf/10.1139/z93-131 |
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crcansciencepubl:10.1139/z93-131 2023-12-17T10:48:42+01:00 Diving in ringed seal ( Phoca hispida ) pups during the nursing period Lydersen, Christian Hammill, Mike O. 1993 http://dx.doi.org/10.1139/z93-131 http://www.nrcresearchpress.com/doi/pdf/10.1139/z93-131 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 71, issue 5, page 991-996 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1993 crcansciencepubl https://doi.org/10.1139/z93-131 2023-11-19T13:39:21Z In this study, activity and diving performance of nursing ringed seal (Phoca hispida) pups were quantified using time–depth recorders. A total of 1040 h of activity, including 7506 diving cycles, was collected from three female pups. The pups spent 50.3% of their time in the water and 49.7% hauled out on the ice. When the pups were in the water, 20.5% of the time was spent actively diving, while 79.5% of the recorded wet time was spent at the surface. Most of the dives were shallow and of short duration. Mean dive duration was 59.1 ± 63.5 s (SD). Maximum dive durations for the three pups were 5.8, 7.5, and 12 min. Maximum recorded depths were 12, 35, and 89 m. These depths represented the bottom in the area where each pup was situated. The average duration of haul-out sessions where nursing could take place was 6.3 ± 1.6 h, and the time between these sessions was 8.2 ± 3.2 h. The mean number of breathing holes found per pup was 8.7 ± 3.5. The large proportion of time spent in the water, the development of diving skills at an extremely young age, the use of multiple breathing holes, and the prolonged white-coat stage are all interpreted to be evolutionary responses to strong predation pressure, mainly from polar bears. Article in Journal/Newspaper Phoca hispida ringed seal Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 71 5 991 996 |
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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 Lydersen, Christian Hammill, Mike O. Diving in ringed seal ( Phoca hispida ) pups during the nursing period |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
In this study, activity and diving performance of nursing ringed seal (Phoca hispida) pups were quantified using time–depth recorders. A total of 1040 h of activity, including 7506 diving cycles, was collected from three female pups. The pups spent 50.3% of their time in the water and 49.7% hauled out on the ice. When the pups were in the water, 20.5% of the time was spent actively diving, while 79.5% of the recorded wet time was spent at the surface. Most of the dives were shallow and of short duration. Mean dive duration was 59.1 ± 63.5 s (SD). Maximum dive durations for the three pups were 5.8, 7.5, and 12 min. Maximum recorded depths were 12, 35, and 89 m. These depths represented the bottom in the area where each pup was situated. The average duration of haul-out sessions where nursing could take place was 6.3 ± 1.6 h, and the time between these sessions was 8.2 ± 3.2 h. The mean number of breathing holes found per pup was 8.7 ± 3.5. The large proportion of time spent in the water, the development of diving skills at an extremely young age, the use of multiple breathing holes, and the prolonged white-coat stage are all interpreted to be evolutionary responses to strong predation pressure, mainly from polar bears. |
format |
Article in Journal/Newspaper |
author |
Lydersen, Christian Hammill, Mike O. |
author_facet |
Lydersen, Christian Hammill, Mike O. |
author_sort |
Lydersen, Christian |
title |
Diving in ringed seal ( Phoca hispida ) pups during the nursing period |
title_short |
Diving in ringed seal ( Phoca hispida ) pups during the nursing period |
title_full |
Diving in ringed seal ( Phoca hispida ) pups during the nursing period |
title_fullStr |
Diving in ringed seal ( Phoca hispida ) pups during the nursing period |
title_full_unstemmed |
Diving in ringed seal ( Phoca hispida ) pups during the nursing period |
title_sort |
diving in ringed seal ( phoca hispida ) pups during the nursing period |
publisher |
Canadian Science Publishing |
publishDate |
1993 |
url |
http://dx.doi.org/10.1139/z93-131 http://www.nrcresearchpress.com/doi/pdf/10.1139/z93-131 |
genre |
Phoca hispida ringed seal |
genre_facet |
Phoca hispida ringed seal |
op_source |
Canadian Journal of Zoology volume 71, issue 5, page 991-996 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z93-131 |
container_title |
Canadian Journal of Zoology |
container_volume |
71 |
container_issue |
5 |
container_start_page |
991 |
op_container_end_page |
996 |
_version_ |
1785572942884634624 |