| Budget Amount *help |
¥23,920,000 (Direct Cost: ¥18,400,000、Indirect Cost: ¥5,520,000)
Fiscal Year 2018: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2017: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2016: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
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| Outline of Final Research Achievements |
In Japanese phytophagous ladybird beetles, we certified that a population of the blue cohosh specialist species in Southern Hokkaido is formed as homoploid hybrid speciation caused by hybridization between closely related thistle specialist species and generalist of blue cohosh and thistle in Hokkaido. The blue cohosh specialist species, which has been thought to be a single species has evolved independently multiple times throughout Japan archipelago. Artificial F1 hybrid offspring of the two parental species in Hokkaido could accept both parental host plants, while they demonstrated significantly reduced larval survivorships on thistle. These results indicate that the blue cohosh specialist species in Southern Hokkaido evolves avoidance against unfit thistle plant after hybridization.
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