Diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups
The diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups on Bird Island, South Georgia (54°S, 38°W), was examined during February-April 1996 using capillary-tube depth gauges (CDGs) and time-depth recorders (TDRs). CDGs were deployed on 6 female and 10 male pups aged 65-101 days. Dept...
Published in: | Canadian Journal of Zoology |
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NRC Canada
1998
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Online Access: | http://nora.nerc.ac.uk/id/eprint/504176/ https://doi.org/10.1139/z97-219 |
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ftnerc:oai:nora.nerc.ac.uk:504176 2023-05-15T13:48:08+02:00 Diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups McCafferty, D.J. Boyd, I.L. Taylor, R.I. 1998 http://nora.nerc.ac.uk/id/eprint/504176/ https://doi.org/10.1139/z97-219 unknown NRC Canada McCafferty, D.J.; Boyd, I.L.; Taylor, R.I. 1998 Diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups. Canadian Journal of Zoology, 76 (3). 513-520. https://doi.org/10.1139/z97-219 <https://doi.org/10.1139/z97-219> Publication - Article PeerReviewed 1998 ftnerc https://doi.org/10.1139/z97-219 2023-02-04T19:38:19Z The diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups on Bird Island, South Georgia (54°S, 38°W), was examined during February-April 1996 using capillary-tube depth gauges (CDGs) and time-depth recorders (TDRs). CDGs were deployed on 6 female and 10 male pups aged 65-101 days. Depths measured by CDGs were within 10% of maximum depths recorded by TDRs. Maximum dive depths averaged 13.8 m and ranged from 4.2 to 28.1 m. Body length alone accounted for 66% of the total variation in maximum dive depth. TDRs were deployed on one female and two male pups aged 89-101 days. In total, 4858 dives were recorded during 173 h at sea. The average dive depth and duration was 4.2 m and 20 s, respectively. Pups made a total of 34 trips and each spent 50% of its time at sea. Not all trips included dives; however, when diving took place trips lasted, on average, 6.8 h and contained 214 dives, most of which took place during daylight. Dives were made at a frequency of 30/h and the vertical distance dived was 124 m · h-1. The number of dives, percentage of time spent submerged, percentage of time spent diving, dive frequency, and dive rate were positively correlated with trip duration. These results show that Antarctic fur seal pups develop diving skills at an early age, and by the time they are close to being weaned they have the diving ability to exploit prey similar to those taken by adults. Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seal Arctocephalus gazella Bird Island Natural Environment Research Council: NERC Open Research Archive Antarctic Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Canadian Journal of Zoology 76 3 513 520 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
The diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups on Bird Island, South Georgia (54°S, 38°W), was examined during February-April 1996 using capillary-tube depth gauges (CDGs) and time-depth recorders (TDRs). CDGs were deployed on 6 female and 10 male pups aged 65-101 days. Depths measured by CDGs were within 10% of maximum depths recorded by TDRs. Maximum dive depths averaged 13.8 m and ranged from 4.2 to 28.1 m. Body length alone accounted for 66% of the total variation in maximum dive depth. TDRs were deployed on one female and two male pups aged 89-101 days. In total, 4858 dives were recorded during 173 h at sea. The average dive depth and duration was 4.2 m and 20 s, respectively. Pups made a total of 34 trips and each spent 50% of its time at sea. Not all trips included dives; however, when diving took place trips lasted, on average, 6.8 h and contained 214 dives, most of which took place during daylight. Dives were made at a frequency of 30/h and the vertical distance dived was 124 m · h-1. The number of dives, percentage of time spent submerged, percentage of time spent diving, dive frequency, and dive rate were positively correlated with trip duration. These results show that Antarctic fur seal pups develop diving skills at an early age, and by the time they are close to being weaned they have the diving ability to exploit prey similar to those taken by adults. |
format |
Article in Journal/Newspaper |
author |
McCafferty, D.J. Boyd, I.L. Taylor, R.I. |
spellingShingle |
McCafferty, D.J. Boyd, I.L. Taylor, R.I. Diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups |
author_facet |
McCafferty, D.J. Boyd, I.L. Taylor, R.I. |
author_sort |
McCafferty, D.J. |
title |
Diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups |
title_short |
Diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups |
title_full |
Diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups |
title_fullStr |
Diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups |
title_full_unstemmed |
Diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups |
title_sort |
diving behaviour of antarctic fur seal (arctocephalus gazella) pups |
publisher |
NRC Canada |
publishDate |
1998 |
url |
http://nora.nerc.ac.uk/id/eprint/504176/ https://doi.org/10.1139/z97-219 |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
geographic |
Antarctic Bird Island |
geographic_facet |
Antarctic Bird Island |
genre |
Antarc* Antarctic Antarctic Fur Seal Arctocephalus gazella Bird Island |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal Arctocephalus gazella Bird Island |
op_relation |
McCafferty, D.J.; Boyd, I.L.; Taylor, R.I. 1998 Diving behaviour of Antarctic fur seal (Arctocephalus gazella) pups. Canadian Journal of Zoology, 76 (3). 513-520. https://doi.org/10.1139/z97-219 <https://doi.org/10.1139/z97-219> |
op_doi |
https://doi.org/10.1139/z97-219 |
container_title |
Canadian Journal of Zoology |
container_volume |
76 |
container_issue |
3 |
container_start_page |
513 |
op_container_end_page |
520 |
_version_ |
1766248724070137856 |