| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2019: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2018: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2017: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
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| Outline of Final Research Achievements |
Field survey and molecular phylogenetic analysis of terrestrial and freshwater molluscs in the Russian Far East, Vietnam and surrounding areas indicate that niche diversity potentially increase speciation rates and contribute to species diversity. On the other hand, in some cases, the abundance of resources (the amount of calcium carbonate required for shell formation) is likely to increase population density and thus, ecologically neutral processes can promote speciation and increase species diversity. The present results suggest that the predator-prey relationship increase phenotypic diversity and promote speciation and increase species diversity. These results indicate that ecological processes play an important role in the evolution of species diversity .
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