| Budget Amount *help |
¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2015: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
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| Outline of Final Research Achievements |
Wild populations of smaller tea tortix show clear generation separations, which is a key signature of intra-specific competition during the larval period. Long-term monitoring data of 15 stations across Japan were analyzed using wavelet transformation and we found that the cycle periods were fairly stable among stations and also for 30 years. Therefore, yearly fluctuations of winter onset did not show clear effects on the variations of generation cycles. Long-term rearing experiments in laboratory showed that the generation cycles of the moth were created by the strong intra-specific competition rather than inter-specific competition. In addition, we found that a subtle external perturbation, such as the rainy season other than winter onset, can synchronize cycles among regions.
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