Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean
Many pinniped species perform a specific dive type, referred to as a ‘drift dive’, where they drift passively through the water column. This dive type has been suggested to function as a resting/sleeping or food processing dive, and can be used as an indication of feeding success by calculating the...
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Online Access: | https://research.library.mun.ca/8244/ https://research.library.mun.ca/8244/1/Drift.Diving.by.Hooded.Seals.pdf https://doi.org/10.1371/journal.pone.0103072 |
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ftmemorialuniv:oai:research.library.mun.ca:8244 2023-10-01T03:55:37+02:00 Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean Andersen, Julie M. Stenson, Garry B. Skern-Maurizen, Mette Wiersma, Yolanda Rosing- Asvid, Aqqalu Hammill, Mike O. Boehme, Lars 2014-07-22 application/pdf https://research.library.mun.ca/8244/ https://research.library.mun.ca/8244/1/Drift.Diving.by.Hooded.Seals.pdf https://doi.org/10.1371/journal.pone.0103072 en eng Public Library of Science https://research.library.mun.ca/8244/1/Drift.Diving.by.Hooded.Seals.pdf Andersen, Julie M. <https://research.library.mun.ca/view/creator_az/Andersen=3AJulie_M=2E=3A=3A.html> and Stenson, Garry B. <https://research.library.mun.ca/view/creator_az/Stenson=3AGarry_B=2E_=3A=3A.html> and Skern-Maurizen, Mette <https://research.library.mun.ca/view/creator_az/Skern-Maurizen=3AMette=3A=3A.html> and Wiersma, Yolanda <https://research.library.mun.ca/view/creator_az/Wiersma=3AYolanda=3A=3A.html> and Rosing- Asvid, Aqqalu <https://research.library.mun.ca/view/creator_az/Rosing-_Asvid=3AAqqalu=3A=3A.html> and Hammill, Mike O. <https://research.library.mun.ca/view/creator_az/Hammill=3AMike_O=2E=3A=3A.html> and Boehme, Lars <https://research.library.mun.ca/view/creator_az/Boehme=3ALars=3A=3A.html> (2014) Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean. PLoS ONE, 9 (7). ISSN 1932-6203 cc_by_nc Article PeerReviewed 2014 ftmemorialuniv https://doi.org/10.1371/journal.pone.0103072 2023-09-03T06:46:48Z Many pinniped species perform a specific dive type, referred to as a ‘drift dive’, where they drift passively through the water column. This dive type has been suggested to function as a resting/sleeping or food processing dive, and can be used as an indication of feeding success by calculating the daily change in vertical drift rates over time, which reflects the relative fluctuations in buoyancy of the animal as the proportion of lipids in the body change. Northwest Atlantic hooded seals perform drift dives at regular intervals throughout their annual migration across the Northwest Atlantic Ocean. We found that the daily change in drift rate varied with geographic location and the time of year and that this differed between sexes. Positive changes in buoyancy (reflecting increased lipid stores) were evident throughout their migration range and although overlapping somewhat, they were not statistically associated with high use areas as indicated by First Passage Time (FPT). Differences in the seasonal fluctuations of buoyancy between males and females suggest that they experience a difference in patterns of energy gain and loss during winter and spring, associated with breeding. The fluctuations in buoyancy around the moulting period were similar between sexes. Article in Journal/Newspaper Cystophora cristata Northwest Atlantic Memorial University of Newfoundland: Research Repository PLoS ONE 9 7 e103072 |
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Open Polar |
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Memorial University of Newfoundland: Research Repository |
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ftmemorialuniv |
language |
English |
description |
Many pinniped species perform a specific dive type, referred to as a ‘drift dive’, where they drift passively through the water column. This dive type has been suggested to function as a resting/sleeping or food processing dive, and can be used as an indication of feeding success by calculating the daily change in vertical drift rates over time, which reflects the relative fluctuations in buoyancy of the animal as the proportion of lipids in the body change. Northwest Atlantic hooded seals perform drift dives at regular intervals throughout their annual migration across the Northwest Atlantic Ocean. We found that the daily change in drift rate varied with geographic location and the time of year and that this differed between sexes. Positive changes in buoyancy (reflecting increased lipid stores) were evident throughout their migration range and although overlapping somewhat, they were not statistically associated with high use areas as indicated by First Passage Time (FPT). Differences in the seasonal fluctuations of buoyancy between males and females suggest that they experience a difference in patterns of energy gain and loss during winter and spring, associated with breeding. The fluctuations in buoyancy around the moulting period were similar between sexes. |
format |
Article in Journal/Newspaper |
author |
Andersen, Julie M. Stenson, Garry B. Skern-Maurizen, Mette Wiersma, Yolanda Rosing- Asvid, Aqqalu Hammill, Mike O. Boehme, Lars |
spellingShingle |
Andersen, Julie M. Stenson, Garry B. Skern-Maurizen, Mette Wiersma, Yolanda Rosing- Asvid, Aqqalu Hammill, Mike O. Boehme, Lars Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean |
author_facet |
Andersen, Julie M. Stenson, Garry B. Skern-Maurizen, Mette Wiersma, Yolanda Rosing- Asvid, Aqqalu Hammill, Mike O. Boehme, Lars |
author_sort |
Andersen, Julie M. |
title |
Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean |
title_short |
Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean |
title_full |
Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean |
title_fullStr |
Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean |
title_full_unstemmed |
Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean |
title_sort |
drift diving by hooded seals (cystophora cristata) in the northwest atlantic ocean |
publisher |
Public Library of Science |
publishDate |
2014 |
url |
https://research.library.mun.ca/8244/ https://research.library.mun.ca/8244/1/Drift.Diving.by.Hooded.Seals.pdf https://doi.org/10.1371/journal.pone.0103072 |
genre |
Cystophora cristata Northwest Atlantic |
genre_facet |
Cystophora cristata Northwest Atlantic |
op_relation |
https://research.library.mun.ca/8244/1/Drift.Diving.by.Hooded.Seals.pdf Andersen, Julie M. <https://research.library.mun.ca/view/creator_az/Andersen=3AJulie_M=2E=3A=3A.html> and Stenson, Garry B. <https://research.library.mun.ca/view/creator_az/Stenson=3AGarry_B=2E_=3A=3A.html> and Skern-Maurizen, Mette <https://research.library.mun.ca/view/creator_az/Skern-Maurizen=3AMette=3A=3A.html> and Wiersma, Yolanda <https://research.library.mun.ca/view/creator_az/Wiersma=3AYolanda=3A=3A.html> and Rosing- Asvid, Aqqalu <https://research.library.mun.ca/view/creator_az/Rosing-_Asvid=3AAqqalu=3A=3A.html> and Hammill, Mike O. <https://research.library.mun.ca/view/creator_az/Hammill=3AMike_O=2E=3A=3A.html> and Boehme, Lars <https://research.library.mun.ca/view/creator_az/Boehme=3ALars=3A=3A.html> (2014) Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean. PLoS ONE, 9 (7). ISSN 1932-6203 |
op_rights |
cc_by_nc |
op_doi |
https://doi.org/10.1371/journal.pone.0103072 |
container_title |
PLoS ONE |
container_volume |
9 |
container_issue |
7 |
container_start_page |
e103072 |
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1778524185122832384 |