Acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals
This study was supported by funding from the Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (23255001 and 15K14793), Grant-in-Aid for JSPS Fellows (12 J04316), the Office of Naval Research grants N00014-10-1-0356 and N00014-13-1-0134, and the E&P Sound a...
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/21523 2023-07-02T03:32:08+02:00 Acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals Yoshino, Kaori Takahashi, Akinori Adachi, Taiki Costa, Daniel P. Robinson, Patrick W. Peterson, Sarah H. Hückstädt, Luis A. Holser, Rachel R. Naito, Yasuhiko University of St Andrews. School of Biology 2021-02-28 9 application/pdf http://hdl.handle.net/10023/21523 https://doi.org/10.1242/jeb.212936 eng eng Journal of Experimental Biology Yoshino , K , Takahashi , A , Adachi , T , Costa , D P , Robinson , P W , Peterson , S H , Hückstädt , L A , Holser , R R & Naito , Y 2020 , ' Acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals ' , Journal of Experimental Biology , vol. 223 , no. 5 , jeb212936 . https://doi.org/10.1242/jeb.212936 0022-0949 PURE: 266954676 PURE UUID: be6ea056-5908-4b69-83d0-8f5daf1533f8 Scopus: 85081070588 PubMed: 32041802 WOS: 000541826200013 http://hdl.handle.net/10023/21523 https://doi.org/10.1242/jeb.212936 Copyright © 2020 The Authors. Published by The Company of Biologists Ltd. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final https://doi.org/10.1242/jeb.212936 Bio-logging Diving behavior Foraging Marine mammal Mesopelagic zone QH301 Biology Ecology Evolution Behavior and Systematics Physiology Aquatic Science Animal Science and Zoology Molecular Biology Insect Science DAS SDG 14 - Life Below Water QH301 Journal article 2021 ftstandrewserep https://doi.org/10.1242/jeb.212936 2023-06-13T18:28:16Z This study was supported by funding from the Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (23255001 and 15K14793), Grant-in-Aid for JSPS Fellows (12 J04316), the Office of Naval Research grants N00014-10-1-0356 and N00014-13-1-0134, and the E&P Sound and Marine Life Joint Industry Project of the International Association of Oil and Gas Producers. Knowledge of the diet of marine mammals is fundamental to understanding their role in marine ecosystems and response to environmental change. Recently, animal-borne video cameras have revealed the diet of marine mammals that make short foraging trips. However, novel approaches that allocate video time to target prey capture events is required to obtain diet information for species that make long foraging trips over great distances. We combined satellite telemetry and depth recorders with newly developed date-/time-, depth- and acceleration-triggered animal-borne video cameras to examine the diet of female northern elephant seals during their foraging migrations across the eastern North Pacific. We obtained 48.2 h of underwater video, from cameras mounted on the head (n=12) and jaw (n=3) of seals. Fish dominated the diet (78% of 697 prey items recorded) across all foraging locations (range: 37-55°N, 122-152°W), diving depths (range: 238-1167 m) and water temperatures (range: 3.2-7.4°C), while squid comprised only 7% of the diet. Identified prey included fish such as myctophids, Merluccius sp. and Icosteus aenigmaticus, and squid such as Histioteuthis sp., Octopoteuthis sp. and Taningia danae Our results corroborate fatty acid analysis, which also found that fish are more important in the diet, and are in contrast to stomach content analyses that found cephalopods to be the most important component of the diet. Our work shows that in situ video observation is a useful method for studying the at-sea diet of long-ranging marine predators. Publisher PDF Peer reviewed Article in Journal/Newspaper Elephant Seals University of St Andrews: Digital Research Repository Pacific Journal of Experimental Biology |
institution |
Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
Bio-logging Diving behavior Foraging Marine mammal Mesopelagic zone QH301 Biology Ecology Evolution Behavior and Systematics Physiology Aquatic Science Animal Science and Zoology Molecular Biology Insect Science DAS SDG 14 - Life Below Water QH301 |
spellingShingle |
Bio-logging Diving behavior Foraging Marine mammal Mesopelagic zone QH301 Biology Ecology Evolution Behavior and Systematics Physiology Aquatic Science Animal Science and Zoology Molecular Biology Insect Science DAS SDG 14 - Life Below Water QH301 Yoshino, Kaori Takahashi, Akinori Adachi, Taiki Costa, Daniel P. Robinson, Patrick W. Peterson, Sarah H. Hückstädt, Luis A. Holser, Rachel R. Naito, Yasuhiko Acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals |
topic_facet |
Bio-logging Diving behavior Foraging Marine mammal Mesopelagic zone QH301 Biology Ecology Evolution Behavior and Systematics Physiology Aquatic Science Animal Science and Zoology Molecular Biology Insect Science DAS SDG 14 - Life Below Water QH301 |
description |
This study was supported by funding from the Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (23255001 and 15K14793), Grant-in-Aid for JSPS Fellows (12 J04316), the Office of Naval Research grants N00014-10-1-0356 and N00014-13-1-0134, and the E&P Sound and Marine Life Joint Industry Project of the International Association of Oil and Gas Producers. Knowledge of the diet of marine mammals is fundamental to understanding their role in marine ecosystems and response to environmental change. Recently, animal-borne video cameras have revealed the diet of marine mammals that make short foraging trips. However, novel approaches that allocate video time to target prey capture events is required to obtain diet information for species that make long foraging trips over great distances. We combined satellite telemetry and depth recorders with newly developed date-/time-, depth- and acceleration-triggered animal-borne video cameras to examine the diet of female northern elephant seals during their foraging migrations across the eastern North Pacific. We obtained 48.2 h of underwater video, from cameras mounted on the head (n=12) and jaw (n=3) of seals. Fish dominated the diet (78% of 697 prey items recorded) across all foraging locations (range: 37-55°N, 122-152°W), diving depths (range: 238-1167 m) and water temperatures (range: 3.2-7.4°C), while squid comprised only 7% of the diet. Identified prey included fish such as myctophids, Merluccius sp. and Icosteus aenigmaticus, and squid such as Histioteuthis sp., Octopoteuthis sp. and Taningia danae Our results corroborate fatty acid analysis, which also found that fish are more important in the diet, and are in contrast to stomach content analyses that found cephalopods to be the most important component of the diet. Our work shows that in situ video observation is a useful method for studying the at-sea diet of long-ranging marine predators. Publisher PDF Peer reviewed |
author2 |
University of St Andrews. School of Biology |
format |
Article in Journal/Newspaper |
author |
Yoshino, Kaori Takahashi, Akinori Adachi, Taiki Costa, Daniel P. Robinson, Patrick W. Peterson, Sarah H. Hückstädt, Luis A. Holser, Rachel R. Naito, Yasuhiko |
author_facet |
Yoshino, Kaori Takahashi, Akinori Adachi, Taiki Costa, Daniel P. Robinson, Patrick W. Peterson, Sarah H. Hückstädt, Luis A. Holser, Rachel R. Naito, Yasuhiko |
author_sort |
Yoshino, Kaori |
title |
Acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals |
title_short |
Acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals |
title_full |
Acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals |
title_fullStr |
Acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals |
title_full_unstemmed |
Acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals |
title_sort |
acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals |
publishDate |
2021 |
url |
http://hdl.handle.net/10023/21523 https://doi.org/10.1242/jeb.212936 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Elephant Seals |
genre_facet |
Elephant Seals |
op_relation |
Journal of Experimental Biology Yoshino , K , Takahashi , A , Adachi , T , Costa , D P , Robinson , P W , Peterson , S H , Hückstädt , L A , Holser , R R & Naito , Y 2020 , ' Acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals ' , Journal of Experimental Biology , vol. 223 , no. 5 , jeb212936 . https://doi.org/10.1242/jeb.212936 0022-0949 PURE: 266954676 PURE UUID: be6ea056-5908-4b69-83d0-8f5daf1533f8 Scopus: 85081070588 PubMed: 32041802 WOS: 000541826200013 http://hdl.handle.net/10023/21523 https://doi.org/10.1242/jeb.212936 |
op_rights |
Copyright © 2020 The Authors. Published by The Company of Biologists Ltd. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final https://doi.org/10.1242/jeb.212936 |
op_doi |
https://doi.org/10.1242/jeb.212936 |
container_title |
Journal of Experimental Biology |
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1770271637860515840 |