Slabbekoorn H
Section of Ethology, Institute of Evolutionary and Ecological Sciences, Leiden University
Anim Behav. 1998 Oct;56(4):847-857. doi: 10.1006/anbe.1998.0887.
Frequency modulations in the perch coos of collared doves, Streptopelia decaocto, affected the responses of territorial males. In this study we used playback experiments to reveal the impact of absolute and relative aspects of the frequency modulations on this responsiveness. Modulated coos always led to stronger responses compared with unmodulated coos, irrespective of the size of the frequency modulation, except when they contained frequencies outside the natural range. We found an optimum for the size of the frequency modulation, with the strongest responses to coos containing frequency modulations of 75-108 Hz, even though higher modulations are still within the species-specific range. The selective responsiveness shows that territorial males are perceptually tuned to the species-specific frequency range and to the species-specific frequency modulation size. This allows a delineation of the optimal acoustic design of the territorial signal, based on the responsiveness of the receiver. Copyright 1998 The Association for the Study of Animal Behaviour.
珠颈斑鸠（Streptopelia decaocto）咕咕叫声中的频率调制会影响领地雄性的反应。在本研究中，我们通过回放实验来揭示频率调制的绝对和相对方面对这种反应性的影响。与未调制的咕咕声相比，调制后的咕咕声总是会引发更强的反应，无论频率调制的大小如何，除非它们包含超出自然范围的频率。我们发现频率调制大小存在一个最佳值，对包含75 - 108赫兹频率调制的咕咕声反应最强，尽管更高的调制仍在物种特定范围内。这种选择性反应表明，领地雄性在感知上会调整到物种特定的频率范围和物种特定的频率调制大小。这使得基于接收者的反应性来描绘领地信号的最佳声学设计成为可能。版权所有1998年动物行为研究协会。
