| Project/Area Number |
01540550
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
生態学
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| Research Institution | Kyushu University |
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Principal Investigator |
IWASA Yoh Faculty of Science. Department of Biology, Assistant., 理学部, 助手 (70176535)
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| Project Period (FY) |
1989 – 1990
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| Project Status |
Completed (Fiscal Year 1990)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1990: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1989: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Keywords | Optimal schedule / Plasticity / Changing environments / Dynamic games / Fermentation / Learning / Selfing rates / Pathogen's schedule / ストレス耐性戦略 / 活動時間帯 / 保険 |
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| Research Abstract |
Studies on the schedule of life history and behavior are :
(1) The optimal growth schedule of plants in the fluctuating environments : Stochastic dynamic programming models demonstrated that whether or not growth plasticity is adaptive strongly depends on the mode of stochasticity of environmental fluctuating. From this, stress-tolerant strategy by Grime can be understood from the view of evolutionary ecology.
(2) Activity schedule of male butterflies within a day : A game model is examine in which each male allocates its limited time of reproductive activity to optimize his own mating success.
(3) Pathogens' optimal growth schedule within the host's body.
(4) The evolution of digestive mode and foraging behavior of large herbivorous mammals.
(5) Learning of Starlings during foraging in fluctuating environment.
(6) The resource allocation models for plants' selfing rate.
Other theoretical studies are :
(7) Simplification of mathematical models by aggregating variables.
(8) A quantity that always increases with time for Markovian transition models.
(9) The evolution of mutation rate in fluctuating environments.
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