| Budget Amount *help |
¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Outline of Final Research Achievements |
To reveal the evolutionary diversification of sexual traits depending on interaction between sexual selection and environmental variation, I studied the latitudinal cline in the male genital size of Eucarabus species (Coleoptera, Carabidae) distributed in Korean Peninsula. Molecular phylogenetic analysis of mitochondrial and nuclear gene sequences revealed that repeated invasion of genetically-differentiated lineages from the continent to the peninsula, suggesting historical complexity of diversification. This finding suggests that the observed latitudinal cline in male genital size is influenced by interaction between residential and invaded lineages such as reproductive character displacement, in addition to variation in the intensity of sexual selection depending on environmental variation among populations.
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