| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Multiple factors are involved in speciation and diversification within species, depending on the timescale. In this study, I used molecular phylogenetic and morphological analyses to investigate the diversification of cicada species in the Ryukyu archipelago where is one of the continental islands. My results indicate that differentiation among regions within the archipelago is extensive and that historical factors linked to the time of archipelago formation are significant factors in this differentiation. On the other hand, the boundaries of genetic differentiation exist besides the Tokara/Kerama gap described in other studies. As a result, it is necessary to reconsider the formation history of the biota of the Ryukyu archipelago.
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