The aerobic submersion limit of Baikal seals, Phoca sibirica
An aerobic dive limit (ADL), the diving duration beyond which postdive lactate concentration increases above the resting level, has been estimated theoretically for many species. Such calculations have been based on an oxygen store/diving metabolic rate (MR) equation. Until now, an ADL has been dete...
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1997
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Online Access: | http://dx.doi.org/10.1139/z97-756 http://www.nrcresearchpress.com/doi/pdf/10.1139/z97-756 |
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crcansciencepubl:10.1139/z97-756 2024-10-06T13:53:20+00:00 The aerobic submersion limit of Baikal seals, Phoca sibirica Ponganis, Paul J. Kooyman, Gerald L. Baranov, Eugene A. Thorson, Philip H. Stewart, Brent S. 1997 http://dx.doi.org/10.1139/z97-756 http://www.nrcresearchpress.com/doi/pdf/10.1139/z97-756 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 75, issue 8, page 1323-1327 ISSN 0008-4301 1480-3283 journal-article 1997 crcansciencepubl https://doi.org/10.1139/z97-756 2024-09-12T04:13:26Z An aerobic dive limit (ADL), the diving duration beyond which postdive lactate concentration increases above the resting level, has been estimated theoretically for many species. Such calculations have been based on an oxygen store/diving metabolic rate (MR) equation. Until now, an ADL has been determined empirically from measurements of blood lactate concentration only in the Weddell seal, Leptonychotes weddellii. We measured post-submergence plasma lactate concentrations during spontaneous voluntary submersions of three captive adult Baikal seals (Phoca sibirica). Two-phase regression analysis revealed a transition in the lactate concentration – submersion duration relationship after the animal had been diving for 15 min. Data collected in prior studies on oxygen stores and submersion metabolic rates of Baikal seals yielded a calculated aerobic limit of 16 min. As in Weddell seals, the empirically determined aerobic limit was very similar to the theoretical limit. Furthermore, most diving durations recorded during recent studies of free-ranging Baikal seals are under this limit. These data support the concept of an ADL and its estimation by means of an oxygen store/diving MR calculation. Article in Journal/Newspaper Weddell Seal Weddell Seals Canadian Science Publishing Weddell Canadian Journal of Zoology 75 8 1323 1327 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
An aerobic dive limit (ADL), the diving duration beyond which postdive lactate concentration increases above the resting level, has been estimated theoretically for many species. Such calculations have been based on an oxygen store/diving metabolic rate (MR) equation. Until now, an ADL has been determined empirically from measurements of blood lactate concentration only in the Weddell seal, Leptonychotes weddellii. We measured post-submergence plasma lactate concentrations during spontaneous voluntary submersions of three captive adult Baikal seals (Phoca sibirica). Two-phase regression analysis revealed a transition in the lactate concentration – submersion duration relationship after the animal had been diving for 15 min. Data collected in prior studies on oxygen stores and submersion metabolic rates of Baikal seals yielded a calculated aerobic limit of 16 min. As in Weddell seals, the empirically determined aerobic limit was very similar to the theoretical limit. Furthermore, most diving durations recorded during recent studies of free-ranging Baikal seals are under this limit. These data support the concept of an ADL and its estimation by means of an oxygen store/diving MR calculation. |
format |
Article in Journal/Newspaper |
author |
Ponganis, Paul J. Kooyman, Gerald L. Baranov, Eugene A. Thorson, Philip H. Stewart, Brent S. |
spellingShingle |
Ponganis, Paul J. Kooyman, Gerald L. Baranov, Eugene A. Thorson, Philip H. Stewart, Brent S. The aerobic submersion limit of Baikal seals, Phoca sibirica |
author_facet |
Ponganis, Paul J. Kooyman, Gerald L. Baranov, Eugene A. Thorson, Philip H. Stewart, Brent S. |
author_sort |
Ponganis, Paul J. |
title |
The aerobic submersion limit of Baikal seals, Phoca sibirica |
title_short |
The aerobic submersion limit of Baikal seals, Phoca sibirica |
title_full |
The aerobic submersion limit of Baikal seals, Phoca sibirica |
title_fullStr |
The aerobic submersion limit of Baikal seals, Phoca sibirica |
title_full_unstemmed |
The aerobic submersion limit of Baikal seals, Phoca sibirica |
title_sort |
aerobic submersion limit of baikal seals, phoca sibirica |
publisher |
Canadian Science Publishing |
publishDate |
1997 |
url |
http://dx.doi.org/10.1139/z97-756 http://www.nrcresearchpress.com/doi/pdf/10.1139/z97-756 |
geographic |
Weddell |
geographic_facet |
Weddell |
genre |
Weddell Seal Weddell Seals |
genre_facet |
Weddell Seal Weddell Seals |
op_source |
Canadian Journal of Zoology volume 75, issue 8, page 1323-1327 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z97-756 |
container_title |
Canadian Journal of Zoology |
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75 |
container_issue |
8 |
container_start_page |
1323 |
op_container_end_page |
1327 |
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1812182032301686784 |