2012 Fiscal Year Final Research Report
Responses to environmental changes in the Arctic top predators based on fine-scale behavioral data
| Project/Area Number |
21681002
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | National Institute of Polar Research |
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Principal Investigator |
WATANABE Yuuki 国立極地研究所, 研究教育系, 助教 (60531043)
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| Project Period (FY) |
2009 – 2012
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| Keywords | 北極 / 捕食動物 |
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| Research Abstract |
Fine-scale behavioral data were recorded for the Greenland shark and the polar bear, the top predators in the Arctic ecosystems. Greenland sharks showed the slowest swim speed and tail-beat frequency across fishes, when the effect of body size was accounted for. This result indicates that the swimming performance of this species is limited by cold water in the Arctic Ocean. Polar bears were active for about the half of their time, without showing clear diel activity patterns, in April.
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[Journal Article] Scaling of swim speed in breath-hold divers2011
Author(s)
Watanabe YY, Sato K, Watanuki Y, Takahashi A, Mitani Y, Amano M, Aoki K, Narazaki T, Iwata T, Minamikawa S, Miyazaki N.
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Journal Title
J. Anim. Ecol.
Volume: 80
Pages: 57-68
DOI
Peer Reviewed
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