| Project/Area Number |
15K14603
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Ecology/Environment
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| Research Institution | Kyoto University |
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Principal Investigator |
Sota Teiji 京都大学, 理学研究科, 教授 (00192625)
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| Research Collaborator |
KOMATA Shinya 京都大学, 大学院理学研究科
Lin Chung-Ping 台湾師範大学, 教授
FUJIWARA Haruhiko 東京大学, 大学院新領域創成科学研究科, 教授
IIJIMA Takuro 東京大学, 大学院新領域創成科学研究科
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | ベイツ型擬態 / 超遺伝子 / 遺伝的多型 / 多型維持機構 / 自然選択 / ベイツ擬態 |
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| Outline of Final Research Achievements |
Papilio memnon exhibits a female-limited Batesian mimicry polymorphism, an intriguing system for investigating the maintenance of genetic polymorphisms: females display both mimetic and non-mimetic forms, whereas males are uniformly non-mimetic. This polymorphism is thought to be maintained by negative frequency-dependent predation, but no comprehensive investigations have been conducted. We identified two allelic sequences of the putative control gene, doublesex, that directly corresponded with the mimetic and non-mimetic female phenotypes in P. memnon. The mimetic allele of doublesex gene persisted at intermediate frequencies at a site in Taiwan, and an equivalent reproductive performance of the two forms over time suggested that negative frequency-dependent selection (NFDS) contributed to the mimicry polymorphism. In a laboratory test for physiological cost of mimetic genotypes, we found no evidence that physiological costs were associated with the mimetic genotypes.
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