Sperm whale sound production studied with ultrasound time/depth-recording tags.
Sperm whale sound production studied with ultrasound time/depth-recording tags.
复制标题
使用超声波时间/深度记录标签研究抹香鲸的声音产生。
DOI：
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发表时间：
2002
影响因子：
2.8
通讯作者：
B. Møhl
中科院分区：
文献类型：
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作者：
P. Madsen;R. Payne;N. Kristiansen;M. Wahlberg;I. Kerr;B. Møhl
海豚科（Delphinidae，Odontoceti）通过迫使加压空气通过鼻复合体中的发音嘴唇来产生音调声音和咔嗒声。有人提出，深潜抹香鲸（Physeter macrocephalus）（Physeteridae，Odontoceti）中的同源肥大鼻结构专门用于产生滴答声。然而，潜水哺乳动物的空气体积随着环境压力的增加而减少，这似乎可能会影响深度处的气动声音产生。为了研究抹香鲸的声音产生在深度，我们附加超声波时间/深度记录标签抹香鲸通过杆和吸盘。我们表明，抹香鲸点击生产的输出和频率的内容是不受流体静力学减少可用的空气量下降到不到2%的初始空气量在鼻复合体。我们提出的证据表明，声音产生机制具有双峰功能，允许生产的点击适合生物声纳和点击更适合于通信。共享的点击功能表明，在抹香鲸的声音生产是基于相同的基本生物力学在较小的齿鲸类，鼻复合体，因此不仅在解剖学上，而且在功能上同源的产生初始的声音脉冲。
Delphinoids (Delphinidae, Odontoceti) produce tonal sounds and clicks by forcing pressurized air past phonic lips in the nasal complex. It has been proposed that homologous, hypertrophied nasal structures in the deep-diving sperm whale (Physeter macrocephalus) (Physeteridae, Odontoceti) are dedicated to the production of clicks. However, air volumes in diving mammals are reduced with increasing ambient pressure, which seems likely to influence pneumatic sound production at depth. To study sperm whale sound production at depth, we attached ultrasound time/depth-recording tags to sperm whales by means of a pole and suction cup. We demonstrate that sperm whale click production in terms of output and frequency content is unaffected by hydrostatic reduction in available air volume down to less than 2% of the initial air volume in the nasal complex. We present evidence suggesting that the sound-generating mechanism has a bimodal function, allowing for the production of clicks suited for biosonar and clicks more suited for communication. Shared click features suggest that sound production in sperm whales is based on the same fundamental biomechanics as in smaller odontocetes and that the nasal complexes are therefore not only anatomically but also functionally homologous in generating the initial sound pulse.