ORIGINAL PAPER
Abstract Diving physiology and at-sea behavior of a juvenile leopard seal (Hydrurga leptonyx) were oppor-tunistically measured in the Antarctic Peninsula during winter 2002. Total body oxygen stores were estimated from measures of hematocrit, hemoglobin, myoglobin, and total blood volume and were us...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.539.6304 2023-05-15T13:32:25+02:00 ORIGINAL PAPER Carey E. Kuhn Æ Birgitte I. Mcdonald Scott A. Shaffer Æ Julie Barnes Æ Daniel E. Crocker Jennifer Burns Æ Daniel P. Costa The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.6304 http://hosting.uaa.alaska.edu/afjmb4/publications/rm4288.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.6304 http://hosting.uaa.alaska.edu/afjmb4/publications/rm4288.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://hosting.uaa.alaska.edu/afjmb4/publications/rm4288.pdf text ftciteseerx 2016-01-08T10:58:19Z Abstract Diving physiology and at-sea behavior of a juvenile leopard seal (Hydrurga leptonyx) were oppor-tunistically measured in the Antarctic Peninsula during winter 2002. Total body oxygen stores were estimated from measures of hematocrit, hemoglobin, myoglobin, and total blood volume and were used to calculate an aerobic dive limit (ADL). Movement patterns and div-ing behavior were measured by equipping the seal with a Satellite Relay Data Logger that transmitted data from 8–31 August 2002. The seal remained in a focal area, in contrast to crabeater seals tracked simultaneously. The seal displayed short, shallow dives (mean 2.0±1.4 min, 44±48 m) and spent 99.9 % of its time within the esti-mated ADL of 7.4 min. The shallow diving behavior contradicts previous diet research suggesting Antarctic krill (Euphausia superba) is the primary prey of leopard seals during the winter months as krill were found at deeper depths during this period. These measurements of diving and movement of a leopard seal provide valuable preliminary data necessary to develop future research on the at-sea behavior of an apex predator in the Antarctic ecosystem. Text Antarc* Antarctic Antarctic Krill Antarctic Peninsula Crabeater Seals Euphausia superba Hydrurga leptonyx Leopard Seal Leopard Seals Unknown Antarctic Antarctic Peninsula Hydrurga ENVELOPE(-61.626,-61.626,-64.145,-64.145) The Antarctic |
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Open Polar |
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Unknown |
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ftciteseerx |
language |
English |
description |
Abstract Diving physiology and at-sea behavior of a juvenile leopard seal (Hydrurga leptonyx) were oppor-tunistically measured in the Antarctic Peninsula during winter 2002. Total body oxygen stores were estimated from measures of hematocrit, hemoglobin, myoglobin, and total blood volume and were used to calculate an aerobic dive limit (ADL). Movement patterns and div-ing behavior were measured by equipping the seal with a Satellite Relay Data Logger that transmitted data from 8–31 August 2002. The seal remained in a focal area, in contrast to crabeater seals tracked simultaneously. The seal displayed short, shallow dives (mean 2.0±1.4 min, 44±48 m) and spent 99.9 % of its time within the esti-mated ADL of 7.4 min. The shallow diving behavior contradicts previous diet research suggesting Antarctic krill (Euphausia superba) is the primary prey of leopard seals during the winter months as krill were found at deeper depths during this period. These measurements of diving and movement of a leopard seal provide valuable preliminary data necessary to develop future research on the at-sea behavior of an apex predator in the Antarctic ecosystem. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Carey E. Kuhn Æ Birgitte I. Mcdonald Scott A. Shaffer Æ Julie Barnes Æ Daniel E. Crocker Jennifer Burns Æ Daniel P. Costa |
spellingShingle |
Carey E. Kuhn Æ Birgitte I. Mcdonald Scott A. Shaffer Æ Julie Barnes Æ Daniel E. Crocker Jennifer Burns Æ Daniel P. Costa ORIGINAL PAPER |
author_facet |
Carey E. Kuhn Æ Birgitte I. Mcdonald Scott A. Shaffer Æ Julie Barnes Æ Daniel E. Crocker Jennifer Burns Æ Daniel P. Costa |
author_sort |
Carey E. Kuhn |
title |
ORIGINAL PAPER |
title_short |
ORIGINAL PAPER |
title_full |
ORIGINAL PAPER |
title_fullStr |
ORIGINAL PAPER |
title_full_unstemmed |
ORIGINAL PAPER |
title_sort |
original paper |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.6304 http://hosting.uaa.alaska.edu/afjmb4/publications/rm4288.pdf |
long_lat |
ENVELOPE(-61.626,-61.626,-64.145,-64.145) |
geographic |
Antarctic Antarctic Peninsula Hydrurga The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Hydrurga The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Crabeater Seals Euphausia superba Hydrurga leptonyx Leopard Seal Leopard Seals |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Crabeater Seals Euphausia superba Hydrurga leptonyx Leopard Seal Leopard Seals |
op_source |
http://hosting.uaa.alaska.edu/afjmb4/publications/rm4288.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.6304 http://hosting.uaa.alaska.edu/afjmb4/publications/rm4288.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766026862720450560 |