期刊
JOURNAL OF EXPERIMENTAL BIOLOGY
卷 217, 期 24, 页码 4279-4282出版社
COMPANY OF BIOLOGISTS LTD
DOI: 10.1242/jeb.113415
关键词
Echolocation; Buzz; Convergent evolution; Prey capture; Delphinid; DTAG
类别
资金
- Danish National Research Foundation (FNU) frame grants
- Oticon Foundation PhD stipend
- Marine Alliance for Science and Technology for Scotland
- Marie Curie Career Integration Grant
Echolocating bats and toothed whales probe their environment with ultrasonic sound pulses, using returning echoes to navigate and find prey in a process that appears to have resulted from a remarkable convergence of the two taxa. Here, we report the first detailed quantification of echolocation behaviour during prey capture in the most studied delphinid species, a false killer whale and a bottlenose dolphin. Using acoustic DTAGs, we demonstrate that just prior to prey interception these delphinids change their acoustic gaze dramatically by reducing inter-click intervals and output >10-fold in a high repetition rate, low output buzz. Buzz click rates of 250-500 Hz for large but agile animals suggest that sampling rates during capture are scaled with the whale's manoeuvrability. These observations support the growing notion that fast sonar sampling accompanied by a low output level is critical for high rate feedback to inform motor patterns during prey interception in all echolocating toothed whales.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据