Jamming avoidance by the echolocating bat during flight with multiple conspecifics
Jamming avoidance by the echolocating bat during flight with multiple conspecifics
复制标题
回声定位蝙蝠在与多个同种动物一起飞行时避免干扰
DOI：
10.1121/1.4969207
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发表时间：
2016
影响因子：
2.4
通讯作者：
S. Hiryu
中科院分区：
文献类型：
--
作者：
Kazuma Hase;Yukimi Kadoya;Yosuke Maitani;Kohta I. Kobayasi;S. Hiryu
回声定位蝙蝠是如何从多个同类一起飞行的声音干扰中提取自己的回声的，这仍然是个谜。在这里，我们第一次成功地记录了回声定位脉冲的每一个动物在四蝙蝠组飞行单独安装在船上的麦克风，使我们能够评估在干扰环境中的发声。我们使用发出向下调频（FM）超声波的长翼蝠。蝙蝠在实验室中经历了单独和集体飞行。结果表明，各组蝙蝠与相邻蝙蝠的脉冲终末频率（TF）差异显著，从单次飞行时的0.6 ± 0.6（平均值±标准差）kHz扩大到组群飞行时的1.2 ± 0.6 kHz（Tukey 'sHSD检验，P < 0.05）。虽然在组飞行中观察到的TF的差异远小于脉冲的带宽（约40 kHz），互相关的计算提供了两个信号的相似性指数表明，差异是u…
It remains mystery how echolocating bats extract their own echoes from an acoustic jamming caused by vocalizations of multiple conspecifics flying together. Here, we first successfully recorded echolocation pulses of each animal during four-bat group flight by individually mounted on-board microphones, allowing us to assess vocalization in a jamming environment. We used Miniopterus fuliginosus which emit downward frequency-modulated (FM) ultrasounds. The bats experienced both single and group flights in an experimental chamber. As a result, each bat of the group significantly expanded differences in terminal frequency (TF) of pulses from the neighboring bat from 0.6 ± 0.6 (mean ± SD) kHz in single flight to 1.2 ± 0.6 kHz in group flight (Tukey’s HSD test, P < 0.05). Although the difference in TF observed in group flight was much smaller than the bandwidth of pulses (approximately 40 kHz), computation of cross-correlation providing an index of similarity of two signals demonstrated that the difference is u...