Equivalent effects of bandwidth and trill rate: support for a performance constraint as a competitive signal
Equivalent effects of bandwidth and trill rate: support for a performance constraint as a competitive signal
复制标题
带宽和颤音速率的等效效果：支持作为竞争信号的性能约束
DOI：
10.1016/j.anbehav.2017.08.012
复制
发表时间：
2017
期刊：
影响因子：
2.5
通讯作者：
E. Derryberry
中科院分区：
文献类型：
--
作者：
J. Phillips;E. Derryberry
生理上有限的性信号可以是雄性之间竞争的质量或动机的可靠指标。鸟类中的运动约束的一个这样的示例是重复音符的产生，其在可以产生音符的频率带宽和颤音速率方面受到限制，使得难以以快速率产生宽带宽音符。鸟类如何最大化频率带宽和颤音率是衡量声乐表演的一个指标，通常被称为“声乐偏差”。理论上，窄带宽的快歌和宽带宽的慢歌应该具有相似的发声偏差值。在许多物种中，雄性会对声音偏差的变化做出反应，这支持了这是一种性选择信号的观点。然而，大多数研究只测试这些组件之一，颤音率或带宽，而不是两者单独测试时，接收器响应声音偏差。因此，一个问题仍然是，是否具有相等的声音偏差值的歌曲（例如，具有窄带宽的快歌和具有宽带宽的慢歌）引起类似的响应水平从接收器。我们测试了接收器是否专门响应颤音速率和带宽之间的权衡（即声音偏差）或仅响应其中一个组成部分的变化。使用领域播放实验与野生雄性白冠麻雀，Zonotrichia leucophrys，我们发现，男性接近高性能的歌曲（快速颤音，宽带宽）比他们更接近低性能的歌曲（快速颤音，窄带宽;慢颤音，宽带宽），他们这样做，无论性能是否变化，因为颤音率或带宽的差异。此外，我们发现，男性给类似的声音偏差的歌曲类似的反应。我们的研究结果实证支持的假设，即接收器响应具体的物理限制生产的重复说明。
Sexual signals that are physically limited can be reliable indicators of quality or motivation in male–male competition. One such example of a motor constraint in birds is the production of repeated notes, which are limited in the frequency bandwidth and trill rate at which notes can be produced, such that it is difficult to produce wide-bandwidth notes at fast rates. How well birds maximize frequency bandwidth and trill rate is one measure of vocal performance, commonly referred to as ‘vocal deviation’. In theory, fast songs with narrow bandwidths and slow songs with wide bandwidths should have similar values of vocal deviation. In many species, males respond to variation in vocal deviation, supporting the notion that it is a sexually selected signal. However, most studies test only one of these components, either trill rate or bandwidth, rather than both individually, when testing receiver response to vocal deviation. Therefore, a question remains as to whether songs with equivalent values of vocal deviation (e.g. fast songs with narrow bandwidths and slow songs with wide bandwidths) elicit similar levels of response from receivers. We tested whether receivers respond specifically to the trade-off between trill rate and bandwidth (i.e. vocal deviation) or only to variation in one of the component parts. Using territorial playback experiments with wild male white-crowned sparrows,Zonotrichia leucophrys, we found that males approached high-performance songs (fast trill, wide bandwidth) more closely than they did lower-performance songs (fast trill, narrow bandwidth; slow trill, wide bandwidth) and they did so regardless of whether performance varied because of differences in trill rate or bandwidth. Furthermore, we found that males gave similar responses to songs of similar vocal deviation. Our results empirically support the hypothesis that receivers respond specifically to the physical limitation on the production of repeated notes.
鸟鸣运动学：麻雀颅骨运动和声学特征的功能相关性。
DOI：
10.1242/jeb.182.1.147
发表时间：
1993
期刊：
The Journal of experimental biology
影响因子：
--
作者：
Westneat,MW;LongJr,JH;Hoese,W;Nowicki,S
通讯作者：
Nowicki,S