| Budget Amount *help |
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2019: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2017: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
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| Outline of Final Research Achievements |
We have determined whole genome sequences of over 20 stickleback populations (about 10 fish per population). The coverage for each individual was about x10. Calculation of gene flow rates showed that gene flow rates between different ecotypes varied among systems, suggesting that we have established a system suitable for studying the speciation continuum. We also found a strong positive correlation between the recombination rates and the gene flow rates, suggesting the importance of recombination suppression for reproductive isolation. We also found that the genomic region responsible for adaptive phenotypic divergence showed higher genetic differentiation than other regions. We also identified several chromosomal structural changes.
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