Wollerman L
Department of Biology, University of North Carolina, Chapel Hill
Anim Behav. 1998 Jun;55(6):1619-30. doi: 10.1006/anbe.1997.0697.
Female frogs of many species show preferences for calls with particular properties. This study focuses on female preferences in Hyla ebraccata for computer-synthesized calls that differ in pulse-repetition rate or dominant frequency. Both of these call properties are static acoustic properties of advertisement calls of H. ebraccata (within-male coefficient of variation <5%). Females exerted directional selection on dominant frequency, preferring low-frequency calls (2960 Hz) to calls with the dominant frequency of the population mean (3240 Hz). Because size is negatively correlated with dominant frequency, female choice could explain size-biased mating success observed in natural populations. Females also exerted stabilizing selection on pulse-repetition rate, preferring calls with a pulse-repetition rate of the population mean (99 Hz) to calls with a pulse-repetition rate that was twice as fast (200 Hz). The results of this study show that female choice creates either directional or stabilizing selection on static properties of calls. Copyright 1998 The Association for the Study of Animal Behaviour. Copyright 1998 The Association for the Study of Animal Behaviour.
许多物种的雌性青蛙对具有特定属性的叫声表现出偏好。本研究聚焦于斑腿泛树蛙雌性对计算机合成叫声的偏好，这些叫声在脉冲重复率或主频上有所不同。这两种叫声属性都是斑腿泛树蛙广告叫声的静态声学属性（雄性个体内变异系数<5%）。雌性对主频进行了定向选择，比起具有种群平均主频（3240赫兹）的叫声，更喜欢低频叫声（2960赫兹）。由于体型与主频呈负相关，雌性的选择可以解释在自然种群中观察到的体型偏向性交配成功现象。雌性对脉冲重复率进行了稳定化选择，比起脉冲重复率快两倍（200赫兹）的叫声，更喜欢具有种群平均脉冲重复率（99赫兹）的叫声。本研究结果表明，雌性选择对叫声的静态属性产生了定向或稳定化选择。版权所有1998动物行为研究协会。版权所有1998动物行为研究协会。
