2016 Fiscal Year Final Research Report
The origin and success of a Pica pica population recently established in Hokkaido.
| Project/Area Number |
26440232
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Ecology/Environment
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
ONO Satoru 北海道立総合研究機構, 環境科学研究センター, 主査 (20557285)
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| Research Collaborator |
HASEGAWA Osamu
OYAKE Narumi
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | カササギ / 分布拡大 / 外来生物 / マイクロサテライト / 安定同位体比 |
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| Outline of Final Research Achievements |
DNA analysis of Pica pica tissues collected in Hokkaido, Kyushu, Russia, Korea, China and so on strongly suggest that the Hokkaido population is derived from Russian Far East. Analysis of carbon and nitrogen stable isotopes of the Hokkaido population estimates that about 60 % and 40 % of food is derived from pet food during the egg-laying and molting periods, respectively.
Currently, about 200 individuals inhabit mainly residential areas of Tomakomai City, and the distribution range of Pica pica expands to most of the Iburi Region and to Sapporo City.
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| Free Research Field |
動物生態学
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