Divergent mechanisms of acoustic mate recognition between closely related field cricket species (Teleogryllus spp.)
Divergent mechanisms of acoustic mate recognition between closely related field cricket species (Teleogryllus spp.)
复制标题
DOI：
10.1016/j.anbehav.2017.06.007
复制
发表时间：
2017-08-01
期刊：
影响因子：
2.5
通讯作者：
Hennig, R. Matthias
中科院分区：
文献类型：
--
作者：
Bailey, Nathan W.;Moran, Peter A.;Hennig, R. Matthias
有效识别同种交配信号可降低适应不良杂交的风险。剖析的信号识别算法的基础偏好是一个有用的方法来测试是否密切相关的类群评估相同或不同的信号功能，以实现配偶识别。这些数据提供了进化分化过程中潜在的限制和选择目标的信息。使用一系列的择偶试验，我们测试是否密切相关，但遗传和表型分歧，场蟋蟀物种（Teleogryllus oceanicus和Teleogryllus commodus）使用共享或不同的识别算法时，评价声学男性呼叫歌曲。这些物种在同域重叠，表现出交配前的隔离基于女性歧视男性呼叫歌曲，但能够产生杂交后代。出乎意料的是，女性的男性歌曲功能的选择性不同的两个物种之间。我们发现，这两个物种使用的共享和独特的信号过滤机制的组合，我们的特点是如何男性载波频率，脉搏率和时间模式的信息是集成，以实现歌曲识别在每个物种。这些结果说明了信号识别算法的关键组成部分相对较少，简单的修改可以导致密切相关的类群之间的显着种间歧视，尽管明显的信号复杂性。这一发现表明，在信号识别和过滤过程中，有些步骤在物种之间是共享的，而其他步骤则不同，这有助于识别在进化趋异过程中被选择的行为特征。(C)2017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。
Effective recognition of conspecific mating signals reduces the risk of maladaptive hybridization. Dissecting the signal recognition algorithms that underlie preferences is a useful approach for testing whether closely related taxa evaluate the same or different signal features to achieve mate recognition. Such data provide information about potential constraints and targets of selection during evolutionary divergence. Using a series of mate choice trials, we tested whether closely related, but genetically and phenotypically divergent, field cricket species (Teleogryllus oceanicus and Teleogryllus commodus) use shared or distinct recognition algorithms when evaluating acoustic male calling songs. These species overlap in sympatry, show premating isolation based on female discrimination of male calling songs, yet are capable of producing hybrid offspring. Unexpectedly, female selectivity for features of male song differed between the two species. We found that the two species use a combination of shared and unique signal filtering mechanisms, and we characterized how information about male carrier frequency, pulse rate and temporal patterning is integrated to achieve song recognition in each species. These results illustrate how comparatively few, simple modifications in key components of signal recognition algorithms can lead to striking interspecific discrimination between closely related taxa, despite apparent signal complexity. The finding that some steps during signal recognition and filtering are shared between the species, while others differ, can help to identify behavioural traits targeted by selection during evolutionary divergence. (C) 2017 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.