| Project/Area Number |
08660178
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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 |
林学
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KUBOTA Kohei The University of Tokyo, Graduate school of Agricultural and Life Sciences, Lecturer, 大学院・農学生命科学研究科, 講師 (30272438)
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| Project Period (FY) |
1996 – 1998
|
| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1996: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | insect / Carabidae / subgenus Ohomopterus / community structure / reproductive season / interspecific hybridization / parapatric distribution / reticulate evolution / 昆虫 / 近縁種 / 交配実験 / 雑種形成 / 性的競争 / 適応度 / 土壌動物 / 繁殖タイプ / ピットフォールトラップ |
|---|
| Research Abstract |
The change of community structure of ground beetles following clearcutting and planting or thinning at forests : the species diversity increased at the open area or the edge of forest, and the annual change and the seasonal change of community structure were also recognized considerably.
The differentiation of life history between related species belonging to Carabidae : in some subfamilies and genera, it was inferred that the differentiation of reproductive season to spring breeder or to autumn breeder occurred parallelly.
The field surveys of hybrid zone and crossing experiments between parapatric species belonging to subgenus Ohomopterus (genus Carabus, Carabidae) : the interspecific hybridization between two species maintain the parapatric distribution pattern because of the direct cost to hybridizing individuals, and allow partial gene flow across the species. This result suggests the reticulate evolution in this subgenus.
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