| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
One of the most important characteristics of termites is the existence of soldiers with highly specialized weapons. Soldier sex ratio is not biased in most of the basal species, but there are many species with strongly biased soldier sex ratio in the phylogenetically apical taxa. To clarify the proximate mechanism of these differences, we tried to identify the sex-determinant gene cascade in some termite species. The results suggested that the gene sequence and expression patterns of the transcription factor in the cascade were specifically changed during the course of termite evolution. Moreover, we could identify some important candidates of the determinant for soldier differentiation and regulatory factor for specific morphogenetic changes.
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