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首页> 外文期刊>Ethology >Variation of Acoustic Courtship Signals in Insects and Amphibians: No Evidence for Bimodality, but Identical Dependence on Duration
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Variation of Acoustic Courtship Signals in Insects and Amphibians: No Evidence for Bimodality, but Identical Dependence on Duration

机译：昆虫和两栖动物的声音求爱信号的变化：没有双峰的证据，但对持续时间的依赖性相同

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摘要

In an influential review, acoustic courtship traits of frogs were classified into the two categories, static and dynamic traits, based on their coefficients of variation and female preference functions. As stabilizing selection can be expected to diminish phenotypic variation, static traits showing comparatively low variation were assumed to be mainly influenced by stabilizing selection through female choice. The more variable dynamic traits on the other hand were proposed to be under directional or less severe selection. Such bimodality in variation would be very valuable, as the pattern of selection could be predicted from signal variability. To examine whether a bimodal pattern of signal variation is generally found in acoustic advertisement signals, I reviewed the literature for available and reliable data for insects and anurans. I found no evidence of bimodality, but detected that coefficients of variation increased with signal duration in accordance with a power law. This relationship between duration and variability seems to be virtually identical in both insects and amphibians. Moreover, such a dependence of the extent of variation on the examined time window seems to be a general pattern, since temporal variation in action potential density, stock market prices and time perception also show a similar pattern.
机译：在一项有影响的评论中，根据青蛙的变声系数和女性偏爱函数，它们将青蛙的求偶特征分为静态和动态两个类别。由于可以预期稳定选择会减少表型变异，因此表现出较低变异的静态性状被认为主要受女性选择的稳定选择影响。另一方面，动态性状多变的建议是在定向性或更弱的选择下进行。这种变化的双峰态将非常有价值，因为可以根据信号的变化性预测选择模式。为了检查在声音广告信号中通常是否发现了信号变化的双峰模式，我回顾了有关昆虫和无脊椎动物的可用和可靠数据的文献。我没有发现双峰的迹象，但发现根据幂定律，变异系数随信号持续时间的增加而增加。在昆虫和两栖动物中，持续时间和变异性之间的这种关系似乎几乎是相同的。而且，这种变化程度对所检查的时间窗口的依赖性似乎是一种普遍的模式，因为动作电位密度，股票价格和时间感知的时间变化也显示出类似的模式。

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