Calling in an acoustically competitive environment: duetting male long-tailed manakins avoid overlapping neighbours but not playback-simulated rivals
Calling in an acoustically competitive environment: duetting male long-tailed manakins avoid overlapping neighbours but not playback-simulated rivals
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DOI：
10.1016/j.anbehav.2012.06.008
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发表时间：
2012-09-01
期刊：
影响因子：
2.5
通讯作者：
Mennill, Daniel J.
中科院分区：
文献类型：
--
作者：
Maynard, Dugan F.;Ward, Kara-Anne A.;Mennill, Daniel J.
生活在多个同种接收器的通信范围内的动物有可能干扰它们邻居的信号，或者通过在不同时间发出信号来避免干扰。我们使用了观察和实验的方法来研究信号的时间在lekking热带鸟类。我们记录duetting对男性长尾侏儒，Chiroxiaminalinearis，在两个相邻的对同时调用期间，并在附近的竞争对手男性的一对模拟播放。我们使用了三种互补的分析技术，以评估鸟类是否改变了他们的二重唱电话相对于附近的动物的时间：循环统计，rescue分析和占空比模型。我们的分析表明，长尾侏儒鸟产生二重奏与非随机的时间方面的呼吁，他们的竞争对手。在同时鸣叫的自然回合中，所有三种分析技术都表明，侏儒鸟会调整它们的二重唱时间以避免重叠。在回应回放，男性表现出更多的可变策略。男性重叠的二重奏播放过程中比他们在自然条件下，在某些情况下，他们重叠播放二重奏在更高的水平比预期的机会。我们的研究表明，男性改变他们的呼叫时间，以回应周围其他人的叫声，它揭示了lekking鸟类的声音信号行为的相似性，相对于更好地研究领土鸟类的信号行为。我们还表明，不同的空模型的信号时序产生不同的见解动物信号行为。(C)2012年，动物行为研究协会。由爱思唯尔有限公司出版。保留所有权利。
Animals that live in communication range of multiple conspecific receivers have the potential to interfere with their neighbours' signals, or to avoid interference by signalling at different times. We used both an observational and experimental approach to study signal timing in lekking tropical birds. We recorded duetting pairs of male long-tailed manakins, Chiroxiphia linearis, during periods when two neighbouring pairs were calling concurrently, and during playback of a simulated pair of nearby rival males. We used three complementary analytical techniques to evaluate whether birds varied the timing of their duet calls relative to nearby animals: circular statistics, resampling analysis and duty cycle models. Our analyses reveal that long-tailed manakins produce duets with nonrandom timing with respect to the calls of their rivals. During natural bouts of concurrent calling, all three analytical techniques revealed that manakins time their duets to avoid overlap. In response to playback, males showed more variable strategies. Males overlapped duets more during playback than they did under natural conditions and, in some cases, they overlapped playback duets at higher levels than would be expected based on chance. Our study shows that males alter the timing of their calls in response to the vocalizations of others around them, and it uncovers similarities in the acoustic signalling behaviour of lekking birds relative to the better-studied signalling behaviour of territorial birds. We also show that different null models of signal timing yield different insights into animal signalling behaviour. (C) 2012 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.