2009 Fiscal Year Final Research Report
Density-dependent mechanism without delay by the life history traits and population ecology of predatory Carabid beetles
| 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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| 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 |
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| 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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