Old World frog and bird, vocalizations contain prominent ultrasonic harmonics
Old World frog and bird, vocalizations contain prominent ultrasonic harmonics
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DOI：
10.1121/1.1636851
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发表时间：
2004-02-01
影响因子：
2.4
通讯作者：
Xu, CH
中科院分区：
文献类型：
--
作者：
Narins, PM;Feng, AS;Xu, CH
已知有几类哺乳动物，如蝙蝠、海豚和鲸鱼，会产生超声波信号，这些信号可用于导航和通过回声定位进行狩猎，也可用于通信。相比之下，青蛙和鸟类在夜间和白天都能发出人类可以听到的声音;它们的声音如此普遍，以至于它们与昆虫的声音一起被认为是自然界的主要声音。在这里，我们表明，一个旧世界的青蛙（阿莫洛普斯tormotus）和oscine鸣禽（Abroscopus albogularis）附近的噪音流可靠地产生声学信号，包含突出的超声波谐波。我们的研究结果提供了第一个证据表明，无尾两栖类和雀形目能够产生音调超声波呼叫组件，并应刺激寻求额外的超声波物种。(C)2004年，美国声学学会。
Several groups of mammals such as bats, dolphins and whales are known to produce ultrasonic signals which are used for navigation and hunting by means of echolocation, as well as for communication. In contrast, frogs and birds produce sounds during night- and day-time hours that are audible to humans; their sounds are so pervasive that together with those of insects, they are considered the primary sounds of nature. Here we show that an Old World frog (Amolops tormotus) and an oscine songbird (Abroscopus albogularis) living near noisy streams reliably produce acoustic signals that contain prominent ultrasonic harmonics. Our findings provide the first evidence that anurans and passerines are capable of generating tonal ultrasonic call components and should stimulate the quest for additional ultrasonic species. (C) 2004 Acoustical Society of America.