Regional differences in diving behavior of harbor seals in the Gulf of Alaska
Adult and subadult harbor seals (Phoca vitulina richardii (Gray, 1864); n = 108) from Southeast Alaska (SE), Kodiak Island (KO), and Prince William Sound (PWS) were instrumented with satellite data recorders to examine dive parameters for harbor seals in the Gulf of Alaska at regional and annual sca...
Published in: | Canadian Journal of Zoology |
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2004
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Online Access: | http://dx.doi.org/10.1139/z04-145 http://www.nrcresearchpress.com/doi/pdf/10.1139/z04-145 |
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crcansciencepubl:10.1139/z04-145 2024-09-15T18:16:55+00:00 Regional differences in diving behavior of harbor seals in the Gulf of Alaska Hastings, K K Frost, K J Simpkins, M A Pendleton, G W Swain, U G Small, R J 2004 http://dx.doi.org/10.1139/z04-145 http://www.nrcresearchpress.com/doi/pdf/10.1139/z04-145 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 82, issue 11, page 1755-1773 ISSN 0008-4301 1480-3283 journal-article 2004 crcansciencepubl https://doi.org/10.1139/z04-145 2024-08-29T04:08:49Z Adult and subadult harbor seals (Phoca vitulina richardii (Gray, 1864); n = 108) from Southeast Alaska (SE), Kodiak Island (KO), and Prince William Sound (PWS) were instrumented with satellite data recorders to examine dive parameters for harbor seals in the Gulf of Alaska at regional and annual scales. Most dives (40%–80%) were <20 m in depth and <4 min in duration; however, dives from 50 to 150 m depth were not uncommon and dives to 508 m were recorded. PWS seals spent less time in the water during the prebreeding and breeding seasons than SE and KO seals. SE seals used a greater diversity of depths than KO and PWS seals. Only seals in PWS and SE (i) dived deeper and longer and spent more time diving in winter than during spring and summer and (ii) dived deepest during the day only in winter. Seals in all regions and seasons dived most frequently and spent the most time diving at night. Subadult seals spent more time diving, dived more often, displayed a stronger diurnal pattern with deepest dives during the day in the winter, and dived deeper than adults. Article in Journal/Newspaper Kodiak Phoca vitulina Alaska Canadian Science Publishing Canadian Journal of Zoology 82 11 1755 1773 |
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Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
Adult and subadult harbor seals (Phoca vitulina richardii (Gray, 1864); n = 108) from Southeast Alaska (SE), Kodiak Island (KO), and Prince William Sound (PWS) were instrumented with satellite data recorders to examine dive parameters for harbor seals in the Gulf of Alaska at regional and annual scales. Most dives (40%–80%) were <20 m in depth and <4 min in duration; however, dives from 50 to 150 m depth were not uncommon and dives to 508 m were recorded. PWS seals spent less time in the water during the prebreeding and breeding seasons than SE and KO seals. SE seals used a greater diversity of depths than KO and PWS seals. Only seals in PWS and SE (i) dived deeper and longer and spent more time diving in winter than during spring and summer and (ii) dived deepest during the day only in winter. Seals in all regions and seasons dived most frequently and spent the most time diving at night. Subadult seals spent more time diving, dived more often, displayed a stronger diurnal pattern with deepest dives during the day in the winter, and dived deeper than adults. |
format |
Article in Journal/Newspaper |
author |
Hastings, K K Frost, K J Simpkins, M A Pendleton, G W Swain, U G Small, R J |
spellingShingle |
Hastings, K K Frost, K J Simpkins, M A Pendleton, G W Swain, U G Small, R J Regional differences in diving behavior of harbor seals in the Gulf of Alaska |
author_facet |
Hastings, K K Frost, K J Simpkins, M A Pendleton, G W Swain, U G Small, R J |
author_sort |
Hastings, K K |
title |
Regional differences in diving behavior of harbor seals in the Gulf of Alaska |
title_short |
Regional differences in diving behavior of harbor seals in the Gulf of Alaska |
title_full |
Regional differences in diving behavior of harbor seals in the Gulf of Alaska |
title_fullStr |
Regional differences in diving behavior of harbor seals in the Gulf of Alaska |
title_full_unstemmed |
Regional differences in diving behavior of harbor seals in the Gulf of Alaska |
title_sort |
regional differences in diving behavior of harbor seals in the gulf of alaska |
publisher |
Canadian Science Publishing |
publishDate |
2004 |
url |
http://dx.doi.org/10.1139/z04-145 http://www.nrcresearchpress.com/doi/pdf/10.1139/z04-145 |
genre |
Kodiak Phoca vitulina Alaska |
genre_facet |
Kodiak Phoca vitulina Alaska |
op_source |
Canadian Journal of Zoology volume 82, issue 11, page 1755-1773 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z04-145 |
container_title |
Canadian Journal of Zoology |
container_volume |
82 |
container_issue |
11 |
container_start_page |
1755 |
op_container_end_page |
1773 |
_version_ |
1810454900245528576 |