Adaptive reproduction strategy and population dynamics through learning and memory of the parasitic wasp and bruchine beetles
Project/Area Number |
20370008
|
Research Category |
Grant-in-Aid for Scientific Research (B)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Ecology/Environment
|
Research Institution | The University of Tokyo |
Principal Investigator |
SHIMADA Masakazu 東京大学, 大学院・総合文化研究科, 教授 (40178950)
|
Co-Investigator(Renkei-kenkyūsha) |
SHIBAO Harunob 東京大学, 大学院・総合文化研究科, 助教 (90401207)
|
Research Collaborator |
ISHI Yumiko 国立環境研究所, 生物・生態系環境研究センター, 特別研究員
|
Project Period (FY) |
2008 – 2010
|
Project Status |
Completed (Fiscal Year 2010)
|
Budget Amount *help |
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2010: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2009: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2008: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
|
Keywords | 個体群動態 / 3者宿主-寄生蜂実験系 / 学習 / 記憶 / アズキゾウムシ / ヨツモンマメゾウムシ / ゾウムシコガネコバチ / 生物種の多様性維持 / 寄生蜂の学習行動 / 寄生蜂と宿主2種の3者実験系 / スイッチング捕食 / 条件づけ / 3者系の持続性 / 交代振動 / 記憶と学習 / limitted attention / 交替振動 / 長期累代実験系 / 行動 / 制限された注視 / 触角電図 / マメゾウムシ科 |
Research Abstract |
Population dynamics of three-species experimental systems with two hosts(bruchine seed beetles) and the parasitic wasp was analyzed based on learning and memory of insects. Two-species systems without the wasp showed Callosobruchus chinensis went to extinction with competitively dominant C. maculatus. However, three-species systems with the wasp which shows frequency-dependent predation based on learning and memory persisted, showing lasting anti-phase population oscillations of two host species. Choice behaviors in prey and predator may affect biodiversity maintenance through adaptive rapid strategy and population dynamics in nature.
|
Report
(4 results)
Research Products
(17 results)