| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2013: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2012: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
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| Outline of Final Research Achievements |
The purpose of this study is to investigate the sophisticated behavioral sensing strategies of echolocating bats through the laboratory and field measurements using bats. We found that 1) the bats (Rhinolophus ferrumequinum nippon) actively expand their beam width depending on the situation, especially at the final stage of capturing target prey, 2) the bat species with narrow beam width more frequently shift their acoustic gaze during flight to compensate their narrower view sight, 3) the bats direct their pulse emission toward important object during obstacle avoidance flight. Furthermore, the wild bats pay their attention (pulse direction) toward not only immediate prey but also the next prey, which was also suggested by the mathematical modeling describing the flight attention.
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