Identification of prey captures in Australian Fur Seals (Arctocephalus pusillus doriferus) using head-mounted accelerometers: field validation with animal-borne video cameras
This study investigated prey captures in free-ranging adult female Australian fur seals (Arctocephalus pusillus doriferus) using head-mounted 3-axis accelerometers and animal-borne video cameras. Acceleration data was used to identify individual attempted prey captures (APC), and video data were use...
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ftdeakinunifig:oai:figshare.com:article/20903803 2023-05-15T16:05:21+02:00 Identification of prey captures in Australian Fur Seals (Arctocephalus pusillus doriferus) using head-mounted accelerometers: field validation with animal-borne video cameras Beth Volpov Andrew Hoskins B C Battaile M Viviant K E Wheatley G Marshall K Abernathy John Arnould 2015-01-01T00:00:00Z http://hdl.handle.net/10536/DRO/DU:30074214 https://figshare.com/articles/journal_contribution/Identification_of_prey_captures_in_Australian_Fur_Seals_Arctocephalus_pusillus_doriferus_using_head-mounted_accelerometers_field_validation_with_animal-borne_video_cameras/20903803 unknown http://hdl.handle.net/10536/DRO/DU:30074214 https://figshare.com/articles/journal_contribution/Identification_of_prey_captures_in_Australian_Fur_Seals_Arctocephalus_pusillus_doriferus_using_head-mounted_accelerometers_field_validation_with_animal-borne_video_cameras/20903803 All Rights Reserved Uncategorized Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics SOUTHERN ELEPHANT SEAL STOMACH TEMPERATURE FORAGING SUCCESS FEEDING-BEHAVIOR MIROUNGA-LEONINA DIVING BEHAVIOR PHOCA-VITULINA MONK SEALS PINNIPEDS CLASSIFICATION Text Journal contribution 2015 ftdeakinunifig 2022-11-17T21:19:11Z This study investigated prey captures in free-ranging adult female Australian fur seals (Arctocephalus pusillus doriferus) using head-mounted 3-axis accelerometers and animal-borne video cameras. Acceleration data was used to identify individual attempted prey captures (APC), and video data were used to independently verify APC and prey types. Results demonstrated that head-mounted accelerometers could detect individual APC but were unable to distinguish among prey types (fish, cephalopod, stingray) or between successful captures and unsuccessful capture attempts. Mean detection rate (true positive rate) on individual animals in the testing subset ranged from 67-100%, and mean detection on the testing subset averaged across 4 animals ranged from 82-97%. Mean False positive (FP) rate ranged from 15-67% individually in the testing subset, and 26-59% averaged across 4 animals. Surge and sway had significantly greater detection rates, but also conversely greater FP rates compared to heave. Video data also indicated that some head movements recorded by the accelerometers were unrelated to APC and that a peak in acceleration variance did not always equate to an individual prey item. The results of the present study indicate that head-mounted accelerometers provide a complementary tool for investigating foraging behaviour in pinnipeds, but that detection and FP correction factors need to be applied for reliable field application. Other Non-Article Part of Journal/Newspaper Elephant Seal Mirounga leonina Phoca vitulina Southern Elephant Seal DRO - Deakin Research Online |
institution |
Open Polar |
collection |
DRO - Deakin Research Online |
op_collection_id |
ftdeakinunifig |
language |
unknown |
topic |
Uncategorized Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics SOUTHERN ELEPHANT SEAL STOMACH TEMPERATURE FORAGING SUCCESS FEEDING-BEHAVIOR MIROUNGA-LEONINA DIVING BEHAVIOR PHOCA-VITULINA MONK SEALS PINNIPEDS CLASSIFICATION |
spellingShingle |
Uncategorized Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics SOUTHERN ELEPHANT SEAL STOMACH TEMPERATURE FORAGING SUCCESS FEEDING-BEHAVIOR MIROUNGA-LEONINA DIVING BEHAVIOR PHOCA-VITULINA MONK SEALS PINNIPEDS CLASSIFICATION Beth Volpov Andrew Hoskins B C Battaile M Viviant K E Wheatley G Marshall K Abernathy John Arnould Identification of prey captures in Australian Fur Seals (Arctocephalus pusillus doriferus) using head-mounted accelerometers: field validation with animal-borne video cameras |
topic_facet |
Uncategorized Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics SOUTHERN ELEPHANT SEAL STOMACH TEMPERATURE FORAGING SUCCESS FEEDING-BEHAVIOR MIROUNGA-LEONINA DIVING BEHAVIOR PHOCA-VITULINA MONK SEALS PINNIPEDS CLASSIFICATION |
description |
This study investigated prey captures in free-ranging adult female Australian fur seals (Arctocephalus pusillus doriferus) using head-mounted 3-axis accelerometers and animal-borne video cameras. Acceleration data was used to identify individual attempted prey captures (APC), and video data were used to independently verify APC and prey types. Results demonstrated that head-mounted accelerometers could detect individual APC but were unable to distinguish among prey types (fish, cephalopod, stingray) or between successful captures and unsuccessful capture attempts. Mean detection rate (true positive rate) on individual animals in the testing subset ranged from 67-100%, and mean detection on the testing subset averaged across 4 animals ranged from 82-97%. Mean False positive (FP) rate ranged from 15-67% individually in the testing subset, and 26-59% averaged across 4 animals. Surge and sway had significantly greater detection rates, but also conversely greater FP rates compared to heave. Video data also indicated that some head movements recorded by the accelerometers were unrelated to APC and that a peak in acceleration variance did not always equate to an individual prey item. The results of the present study indicate that head-mounted accelerometers provide a complementary tool for investigating foraging behaviour in pinnipeds, but that detection and FP correction factors need to be applied for reliable field application. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Beth Volpov Andrew Hoskins B C Battaile M Viviant K E Wheatley G Marshall K Abernathy John Arnould |
author_facet |
Beth Volpov Andrew Hoskins B C Battaile M Viviant K E Wheatley G Marshall K Abernathy John Arnould |
author_sort |
Beth Volpov |
title |
Identification of prey captures in Australian Fur Seals (Arctocephalus pusillus doriferus) using head-mounted accelerometers: field validation with animal-borne video cameras |
title_short |
Identification of prey captures in Australian Fur Seals (Arctocephalus pusillus doriferus) using head-mounted accelerometers: field validation with animal-borne video cameras |
title_full |
Identification of prey captures in Australian Fur Seals (Arctocephalus pusillus doriferus) using head-mounted accelerometers: field validation with animal-borne video cameras |
title_fullStr |
Identification of prey captures in Australian Fur Seals (Arctocephalus pusillus doriferus) using head-mounted accelerometers: field validation with animal-borne video cameras |
title_full_unstemmed |
Identification of prey captures in Australian Fur Seals (Arctocephalus pusillus doriferus) using head-mounted accelerometers: field validation with animal-borne video cameras |
title_sort |
identification of prey captures in australian fur seals (arctocephalus pusillus doriferus) using head-mounted accelerometers: field validation with animal-borne video cameras |
publishDate |
2015 |
url |
http://hdl.handle.net/10536/DRO/DU:30074214 https://figshare.com/articles/journal_contribution/Identification_of_prey_captures_in_Australian_Fur_Seals_Arctocephalus_pusillus_doriferus_using_head-mounted_accelerometers_field_validation_with_animal-borne_video_cameras/20903803 |
genre |
Elephant Seal Mirounga leonina Phoca vitulina Southern Elephant Seal |
genre_facet |
Elephant Seal Mirounga leonina Phoca vitulina Southern Elephant Seal |
op_relation |
http://hdl.handle.net/10536/DRO/DU:30074214 https://figshare.com/articles/journal_contribution/Identification_of_prey_captures_in_Australian_Fur_Seals_Arctocephalus_pusillus_doriferus_using_head-mounted_accelerometers_field_validation_with_animal-borne_video_cameras/20903803 |
op_rights |
All Rights Reserved |
_version_ |
1766401253586239488 |