| Budget Amount *help |
¥24,570,000 (Direct Cost: ¥18,900,000、Indirect Cost: ¥5,670,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2018: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2017: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
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| Outline of Final Research Achievements |
This project aimed to reveal ecological and cognitive constraints on homeward movements in pelagic seabirds that travel several hundreds to thousands of kilometers for foraging during the breeding season. Using animal-borne GPS loggers, at-sea movements of four species of Calonectris shearwaters were tracked and compared among breeding colonies and among species. The comparative analysis is in progress, in which the differences are interpreted in terms of geographic conditions and sensory mechanisms for navigation. In addition, to consider genetic differences among breeding colonies, the genetic structure of streaked shearwaters (C. leucomelas) was investigated using microsatellite markers, and little genetic differentiation was found.
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