| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Research Abstract |
The wing-beat frequencies of small insects like mosquitos can reach 500 Hz or higher. Such high frequencies cannot be reached by repeating ordinary contraction-relaxation cycles. Instead, they are made possible by the capacity of self-sustained oscillation of the flight muscle, and a mechano-sensing mechanism called "stretch activation" is essential for this capacity. In this study, we were able to obtain crucial information in clarifying the molecular mechanism of "stretch activation" by recording the molecular movement within the flight muscle of live beating insects at a speed of 5000 frames/s by using the high-flux X-ray beams of SPring-8 and ultrafast CMOS video cameras.
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