Monitoring the behavior and multi-dimensional movements of Weddell seals using an animal-borne video and data recorder
We have developed an animal-borne video and data recorder to observe Weddell seals foraging and to reconstruct their three-dimensional movements. The video and data recorder consists of a low-light-sensitive video camera with near-infrared light-emitting diodes that is mounted on top of the seal...
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Department of Marine Biology, Texas A&M University at Galveston/Pisces Design/Department of Marine Biology, Texas A&M University at Galveston
2004
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ftnipr:oai:nipr.repo.nii.ac.jp:00002488 2023-05-15T13:48:00+02:00 Monitoring the behavior and multi-dimensional movements of Weddell seals using an animal-borne video and data recorder Davis,Randall W. Hagey,William Horning,Markus 2004-03 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2488 http://id.nii.ac.jp/1291/00002488/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2488&item_no=1&attribute_id=18&file_no=1 en eng Department of Marine Biology, Texas A&M University at Galveston/Pisces Design/Department of Marine Biology, Texas A&M University at Galveston https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2488 http://id.nii.ac.jp/1291/00002488/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 58, 148-154(2004-03) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2488&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 2004 ftnipr 2022-11-12T19:43:14Z We have developed an animal-borne video and data recorder to observe Weddell seals foraging and to reconstruct their three-dimensional movements. The video and data recorder consists of a low-light-sensitive video camera with near-infrared light-emitting diodes that is mounted on top of the seal's head to obtain close-up images of the seal's muzzle and the area in front of the animal. The main housing, which is mounted on the animal's back, contains an 8-mm video tape recorder that can record for 6 h, batteries, a microcomputer and transducers for pressure, water speed, compass bearing, and flipper stroke frequency. Sound is recorded on one audio channel of the tape recorder with a hydrophone. Using these instruments, we have recorded over 500 h of underwater video and over 1000 three-dimensional dive paths with corresponding swimming performance data from 31 adult Weddell seals. We have documented seals foraging in the water column, on the sea floor, and at the under-ice surface. Mid-water foraging included encounters with large Antarctic toothfish and smaller Antarctic silverfish. Multivariate statistical analysis of variables derived from the temporal and spatial characteristics of three-dimensional dive paths have enabled us to classify dive types and, in some cases, assign a function such as foraging. Report Antarc* Antarctic Antarctic silverfish Antarctic Toothfish Memoirs of National Institute of Polar Research Polar Research Weddell Seals National Institute of Polar Research Repository, Japan Antarctic Weddell |
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Open Polar |
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National Institute of Polar Research Repository, Japan |
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ftnipr |
language |
English |
description |
We have developed an animal-borne video and data recorder to observe Weddell seals foraging and to reconstruct their three-dimensional movements. The video and data recorder consists of a low-light-sensitive video camera with near-infrared light-emitting diodes that is mounted on top of the seal's head to obtain close-up images of the seal's muzzle and the area in front of the animal. The main housing, which is mounted on the animal's back, contains an 8-mm video tape recorder that can record for 6 h, batteries, a microcomputer and transducers for pressure, water speed, compass bearing, and flipper stroke frequency. Sound is recorded on one audio channel of the tape recorder with a hydrophone. Using these instruments, we have recorded over 500 h of underwater video and over 1000 three-dimensional dive paths with corresponding swimming performance data from 31 adult Weddell seals. We have documented seals foraging in the water column, on the sea floor, and at the under-ice surface. Mid-water foraging included encounters with large Antarctic toothfish and smaller Antarctic silverfish. Multivariate statistical analysis of variables derived from the temporal and spatial characteristics of three-dimensional dive paths have enabled us to classify dive types and, in some cases, assign a function such as foraging. |
format |
Report |
author |
Davis,Randall W. Hagey,William Horning,Markus |
spellingShingle |
Davis,Randall W. Hagey,William Horning,Markus Monitoring the behavior and multi-dimensional movements of Weddell seals using an animal-borne video and data recorder |
author_facet |
Davis,Randall W. Hagey,William Horning,Markus |
author_sort |
Davis,Randall W. |
title |
Monitoring the behavior and multi-dimensional movements of Weddell seals using an animal-borne video and data recorder |
title_short |
Monitoring the behavior and multi-dimensional movements of Weddell seals using an animal-borne video and data recorder |
title_full |
Monitoring the behavior and multi-dimensional movements of Weddell seals using an animal-borne video and data recorder |
title_fullStr |
Monitoring the behavior and multi-dimensional movements of Weddell seals using an animal-borne video and data recorder |
title_full_unstemmed |
Monitoring the behavior and multi-dimensional movements of Weddell seals using an animal-borne video and data recorder |
title_sort |
monitoring the behavior and multi-dimensional movements of weddell seals using an animal-borne video and data recorder |
publisher |
Department of Marine Biology, Texas A&M University at Galveston/Pisces Design/Department of Marine Biology, Texas A&M University at Galveston |
publishDate |
2004 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2488 http://id.nii.ac.jp/1291/00002488/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2488&item_no=1&attribute_id=18&file_no=1 |
geographic |
Antarctic Weddell |
geographic_facet |
Antarctic Weddell |
genre |
Antarc* Antarctic Antarctic silverfish Antarctic Toothfish Memoirs of National Institute of Polar Research Polar Research Weddell Seals |
genre_facet |
Antarc* Antarctic Antarctic silverfish Antarctic Toothfish Memoirs of National Institute of Polar Research Polar Research Weddell Seals |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2488 http://id.nii.ac.jp/1291/00002488/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 58, 148-154(2004-03) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2488&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766248370720997376 |