2010 Fiscal Year Final Research Report
Effect of history of populations on life history evolution : phylogeographical analysis for geographical variation
| Project/Area Number |
20570024
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Ecology/Environment
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
ISHIHARA Michihiro Osaka Prefecture University, 理学系研究科, 准教授 (40315966)
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| Co-Investigator(Kenkyū-buntansha) |
YAGI Takashi 大阪府立大学, 産学官連携機構, 教授 (80182301)
KITADE Osamu 茨城大学, 理学部, 准教授 (80302321)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 地理的変異 / 遺伝的変異 / Nested clade phylogeographical analysis / ハプロタイプネットワーク / 系統関係 / 地史 / 季節多型 / キアゲハ |
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| Research Abstract |
Latitudinal clines of life history traits were caused by local adaptation for latitudinal different conditions of temperatures in all insect species used in this study except for the bruchid, Acanthoscelides pallidipennis, in which the cause was phenotypic plasticity dependent on host seed sizes. In the swallowtail butterfly, Papilio machaon, the phylogeographical analysis using mtDNA and common garden experiment suggested that the history of population fragmentations and genetic drifts acted as constraint on the direction and degree of life history evolution. Therefore, this might make a gap in Tsugaru Channel across latitudinal clines.
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