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首页> 外文期刊>Ethology >Differential Evolution of Advertisement Call Traits in Dart-Poison Frogs (Anura: Dendrobatidae)
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Differential Evolution of Advertisement Call Traits in Dart-Poison Frogs (Anura: Dendrobatidae)

机译：箭毒蛙广告呼唤特征的差异演化（阿努拉：Dendrobatidae）

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tThe ability to recognise and discriminate between heterospecific and conspecific individuals plays an essential role in mate choice, reproductive isolation and thus species diversification. Many animals discriminate based on advertisement calls, whose evolution may be driven by a variety of forces such as natural selection, sexual selection or stochastic processes. The relative importance of stochastic processes acting on a given trait is usually correlated with its phylogenetic signal. Mate-recognition signals are complex traits composed of multiple features that could potentially respond independently to evolutionary forces. The advertisement call of anurans is used in species recognition and mate choice. In this study, we estimate the phylogenetic signal for body size and a suite of traits describing the male advertisement call from dart-poison frogs (Anura: Dendrobatidae). We found a surprisingly high phylogenetic signal for all call traits. In addition, call traits varied in their degree of phylogenetic signal, suggesting that evolutionary forces have been acting differently on different traits. Pulse duration showed the strongest phylogenetic signal. Peak frequency and body size were correlated and presented high phylogenetic signal indicating that the evolution of one trait may be driving or constraining the other. Since most variation in call traits can be explained by the phylogenetic history of the species, we cannot reject the hypothesis that stochastic processes account for significant evolutionary divergence in frog calls.
机译：识别和区分异种个体和同种个体的能力在选择配偶，生殖隔离以及物种多样化中起着至关重要的作用。许多动物都根据广告招呼来区分动物，广告的进化可能受到自然选择，性选择或随机过程等多种因素的驱动。作用于给定性状的随机过程的相对重要性通常与其系统发生信号相关。伴侣识别信号是由多个特征组成的复杂特征，这些特征可能独立地对进化力作出反应。紫罗兰的广告语用于物种识别和配偶选择。在这项研究中，我们估计了体型的系统发育信号和一系列特征，这些特征描述了箭毒蛙（Anura：Dendrobatidae）的雄性广告。我们发现所有呼叫性状的出奇的高系统发育信号。此外，通话性状的系统发生信号程度也各不相同，这表明进化力对不同性状的作用不同。脉冲持续时间显示出最强的系统发生信号。峰值频率和体型相关并呈现出高系统发生信号，表明一个特征的进化可能正在驱动或约束另一个特征。由于大多数性状的变异都可以通过该物种的系统进化史来解释，因此我们不能拒绝这样的假设，即随机过程在青蛙中引起了显着的进化差异。

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