Decoupled auditory perception from acoustic signal divergence hinders species recognition in territorial poison frogs
Decoupled auditory perception from acoustic signal divergence hinders species recognition in territorial poison frogs
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听觉信号发散的解耦阻碍了领地毒蛙的物种识别
DOI：
10.1007/s00265-022-03281-8
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发表时间：
2023
影响因子：
2.3
通讯作者：
Amézquita, Adolfo
中科院分区：
文献类型：
--
作者：
González-Santoro, Marco;Palacios-Rodríguez, Pablo;Gonzalez, Mabel;Hernández-Restrepo, Jack;Mejía-Vargas, Daniel;Amézquita, Adolfo
物种识别包括配偶识别和竞争对手识别，是建立和维持物种边界的重要机制。发送者和接收者之间的有效沟通对于物种识别的发生至关重要。从这个意义上说，种内信号有望与识别系统相结合，以避免与其他物种的生殖干扰。然而，经验证据表明，信号和识别系统的不对称进化可能在自然界中广泛存在。此外，识别系统的研究传统上集中在女性的感知上，但男性的作用在很大程度上被忽视了。我们研究了两个名义种和一个中间种群在颜色和体型上形成表型变异的声学特征及其感知的差异。我们使用雄性对其他雄性的识别和竞争作为预测通信系统的驱动因素。我们在物种和中间种群中都发现了广泛且不对称的识别水平，我们认为这反映了整个系统中生殖干扰的普遍存在。早期血统的雄性之间对攻击信号的有效识别有望防止代价高昂的相互作用，例如争夺配偶。因此，发散信号应该与允许识别它们的感知系统相结合。当这一过程被打破时，生殖干扰或不同血统的雄性之间为获得配偶的竞争就会盛行。在我们的研究中，我们证明了声信号的耦合发散及其感知在领土毒蛙（叶状纲）的早期谱系中受到阻碍。我们研究了两个物种和一个中间种群，它们在颜色和体型上表现出表型的变化。毒蛙的领地性被广泛认为是雄性繁殖成功的一个预测因素。因此，我们认为雄性的听觉感知仍然是灵活的，以识别不同的声学特征，这些声学特征可能会危及雄性的领土所有权和配偶获得。
Species recognition, encompassing mate and competitor recognition, is an important mechanism for establishing and maintaining species boundaries. The effective communication between a sender and a receiver is crucial for species recognition to occur. In this sense, intraspecific signals are expected to evolve coupled to recognition systems to avoid reproductive interference with other species. Empirical evidence suggests, however, that the asymmetrical evolution of signaling and recognition systems may be widespread in nature. Moreover, the study of recognition systems has classically focused on the perception by females, but the role of males has been largely overlooked. We studied the divergence of acoustic traits and their perception in two nominal species and an intermediate population that form a phenotypic cline in color and body size. We used males’ recognition of and competition with other males as the predicted drivers of the communication system. We found wide and asymmetrical levels of recognition in both species and the intermediate population, which we argue reflects the prevalence of reproductive interference across the system.Significance statementThe effective recognition of aggressive signals between males of incipient lineages is expected to prevent costly interactions, such as competing for mates. Therefore, diverging signals should evolve coupled to perceptual systems that allow their recognition. When this process is broken, reproductive interference or the competition between males of distinct lineages for the access to mates will prevail. In our study, we prove that the coupled divergence of acoustic signals and their perception is hindered in incipient lineages of territorial poison frogs (Phyllobates). We studied two species and an intermediate population that represent a phenotypic cline in color and body size. Territoriality in poison frogs is widely acknowledged as a predictor of reproductive success in males. Therefore, we argue that males’ auditory perception remained flexible to recognize divergent acoustic traits that could put at risk males’ territory ownership and by extension mate acquisition.
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