Mate choice intensifies motor signalling in Drosophila
Mate choice intensifies motor signalling in Drosophila
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DOI：
10.1016/j.anbehav.2017.09.014
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发表时间：
2017-11-01
期刊：
影响因子：
2.5
通讯作者：
Snook, Rhonda R.
中科院分区：
文献类型：
--
作者：
Debelle, Allan;Courtiol, Alexandre;Snook, Rhonda R.
配偶选择通过对运动性信号的直接影响，有可能对运动性能的演变起作用。然而，证明这一点的研究很少。在这里，我们对果蝇的求偶鸣叫率进行了深入的分析，这是该物种在配偶选择时的一种运动信号，并利用实验进化分析了这种信号对性别选择操纵的反应。我们发现，操纵性别选择的机会导致了歌曲产生率和歌唱耐力的变化，来自一夫多妻制群体的男性在更长的时间内产生更快的歌曲率，而不是来自一夫一妻制群体的男性。我们还表明，歌曲率与总体求爱强度的估计相关。我们的结果表明，配偶选择对运动信号的影响影响了雄性在求爱过程中表现出的运动表现。我们考虑了与运动性能变化相关的潜在的选择性益处，包括条件依赖的信号传递，并讨论了这些结果对研究性别选择下的运动信号的影响。(C)2017年动物行为研究协会。爱思唯尔有限公司出版。保留所有权利。
Mate choice has the potential to act on the evolution of motor performance via its direct influence on motor sexual signals. However, studies demonstrating this are rare. Here, we performed an in-depth analysis of Drosophila pseudoobscura courtship song rate, a motor signal under mate choice in this species, and analysed the response of this signal to sexual selection manipulation using experimental evolution. We show that manipulating the opportunity for sexual selection led to changes in song production rate and singing endurance, with males from the polyandrous populations producing faster song rates over longer time periods than males from monogamous populations. We also show that song rate was correlated with estimates of overall courtship vigour. Our results suggest that the action of mate choice on a motor signal has affected male motor performance displayed during courtship. We consider potential selective benefits associated with changes in motor performance, including condition-dependent signalling, and discuss the implications of these results for the study of motor signals under sexual selection. (C) 2017 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.