WEKO3
アイテム
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Monitoring the behavior and multi-dimensional movements of Weddell seals using an animal-borne video and data recorder
https://nipr.repo.nii.ac.jp/records/2488
https://nipr.repo.nii.ac.jp/records/2488e8b95afb-d509-4016-a584-74de3640c7b5
名前 / ファイル | ライセンス | アクション |
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KJ00000013102 (257.6 kB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2004-03-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Monitoring the behavior and multi-dimensional movements of Weddell seals using an animal-borne video and data recorder | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Davis,Randall W.
× Davis,Randall W.× Hagey,William× Horning,Markus |
|||||
著者所属(英) | ||||||
en | ||||||
Department of Marine Biology, Texas A&M University at Galveston/Pisces Design/Department of Marine Biology, Texas A&M University at Galveston | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | 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. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 58, p. 148-154, 発行日 2004-03 |