2017 Fiscal Year Final Research Report
Conservation unit of short-tailed albatross focusing on migration and genetic diversity
| Project/Area Number |
15K14439
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Conservation of biological resources
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
佐藤 文男 公益財団法人山階鳥類研究所, その他部局等, 研究員 (00099996)
江田 真毅 北海道大学, 総合博物館, 講師 (60452546)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 保全生物学 / 海鳥 / 遺伝的隔離 / 非繁殖期 |
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| Outline of Final Research Achievements |
Individuals of seabirds breeding at the same colony often use separate areas during the non-breeding period and they sometimes diverse genetically. Short-tailed albatrosses Phoebastria albatrus is endemic and threatened species in Japan. Its population consists of two genetically diverse types (Torishima and Senkaku). We tracked the annual movements of individual birds breeding at Torishima using biologging technique. We found that during their non-breeding period all Torishima type used Bering Sea while Senkaku type mainly used the Okhotsk Sea. We did not detect difference in the timing of arrival to the colony from non-breeding areas between these two types. Thus these two types may be under the different natural and anthropogenic stresses during non-breeding period thus should be carefly treated as separate conservation units.
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| Free Research Field |
海洋生態学
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