Study on the mesopelagic foraging behavior of northern elephant seals using jaw motion recorders and seal head cameras
| Project/Area Number |
21380128
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
General fisheries
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| Research Institution | National Institute of Polar Research |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Akinori 国立極地研究所, 研究教育系, 准教授 (40413918)
WATANABE Yuuki 国立極地研究所, 研究教育系, 助教 (60531043)
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| Co-Investigator(Renkei-kenkyūsha) |
YODA Kenyoda 名古屋大学, 環境学研究科, 准教授 (10378606)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
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| Keywords | 生態 / 行動 / 海洋生態系 / 動物行動学 / バイオロギング / 採餌計測 / ゾウアザラシ / 潜水行動 |
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| Research Abstract |
In order to obtain a new insight into the deep diving behavior of the northern elephant seals we measured their feeding behavior using newly developed jaw motion sensors and seal head cameras. The seals dived into deep sea(500-650 m) and foraged numerous number(20, 000-40, 000) of small mesopelagic prey(10-20 g) by suction feeding mode. Seals modified their diving behavior according to the deal migration pattern of mesopelagic prey.
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Report
(4 results)
Research Products
(20 results)
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[Journal Article] Using a mandible accelerometer to study fine-scale foraging behavior of free-ranging Antarctic fur seals2012
Author(s)
Iwata, T., Sakamoto, K. Q. Takahashi, A., Edwards, E. W. Stanland, I. N., Trathan, P. N. & Naito, Y.
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Journal Title
Mar. Mamm. Sci
Volume: 28
Issue: 2
Pages: 345-357
DOI
Related Report
Peer Reviewed
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[Journal Article] Northern elephant seals adjust gliding and stroking patterns with changes in buoyancy : validation of at sea metrics of body density2011
Author(s)
Aoki, K., Watanabe, Y., Crocker, D. E., Robinson, P. W., Biew, M., Costa, D. P., Miyazaki, N., Fedak, M. A. & Miller, P. J. O.
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Journal Title
J. Exp. Biol
Volume: 214
Issue: 17
Pages: 2973-2987
DOI
Related Report
Peer Reviewed
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[Journal Article] Underwater and surface behavior of homing juvenile northern elephant seals2011
Author(s)
Matsumura, M., Watanabe, Y., Robinson, P. E, Millar, P. J. O, Cost, D. C. & Miyazaki, M.
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Journal Title
J. Exp. Biol
Volume: 214
Issue: 4
Pages: 629-634
DOI
Related Report
Peer Reviewed
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