| Project/Area Number |
19580166
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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・森林工学
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| Research Institution | The University of Tokyo |
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Principal Investigator |
MAEHARA Tadashi The University of Tokyo, 大学院・農学生命科学研究科, 助教 (10251422)
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| Co-Investigator(Kenkyū-buntansha) |
KAMATA Naoto 東京大学, 大学院・農学生命科学研究科, 教授 (90303255)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 遅れのない密度依存性 / 大発生 / ブナアオシャチホコ / クロカタビロオサムシ / 越冬中の捕食 / 大発生の終息 / 生活史形質 / ブナ林 / 捕食性天敵 |
|---|
| Research Abstract |
In general, predator density increase and decrease occurs depends on prey density, and its predator population dynamics with delay. However, An outbreak of a beech caterpillar (Syntypistis punctatella : univoltine) occurs once a about 10 years in Hakkoda Mountains, Aomori Prefecture and the Predator Carabid beetle (Calosoma maximowiczi : univoltine) population dynamics changes with no delay. Results of this study, without delay because the survival rate of wintering after outbreak in the carabid beetle is only 4.5 percent, and because we would be considered too dispersed individuals survived the winter period, the revealed.
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