Receiver bias and the acoustic ecology of aye-ayes (Daubentonia madagascariensis).
Receiver bias and the acoustic ecology of aye-ayes (Daubentonia madagascariensis).
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DOI：
10.4161/cib.21509
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发表时间：
2012-11-01
影响因子：
--
通讯作者：
Dominy NJ
中科院分区：
文献类型：
--
作者：
Ramsier MA;Dominy NJ
指狐猴是一种稀有的马达加斯加狐猴，它用高度特化的中指进行觅食。这种声学行为，也称为敲击扫描，产生6至15 kHz之间的主频。对这些频率的增强的听觉敏感性增加了一种可能性，即指狐猴的声学和听觉特化对其声音信号的进化施加了限制，特别是它们主要的长距离发声，尖叫声。在这里，我们探讨这个概念，被称为接收器偏差，并建议尖叫呼叫的主导频率（~2.7 kHz）代表了长距离声音传播和增强检测同种接收器的相对自适应优势之间的进化妥协。
The aye-aye is a rare lemur from Madagascar that uses its highly specialized middle digit for percussive foraging. This acoustic behavior, also termed tap-scanning, produces dominant frequencies between 6 and 15 kHz. An enhanced auditory sensitivity to these frequencies raises the possibility that the acoustic and auditory specializations of aye-ayes have imposed constraints on the evolution of their vocal signals, especially their primary long-distance vocalization, the screech. Here we explore this concept, termed receiver bias, and suggest that the dominant frequency of the screech call (~2.7 kHz) represents an evolutionary compromise between the opposing adaptive advantages of long-distance sound propagation and enhanced detection by conspecific receivers.