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首页> 外文期刊>Current Biology: CB >Higher fundamental frequency in bonobos is explained by larynx morphology
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Higher fundamental frequency in bonobos is explained by larynx morphology

机译：通过喉部的形态解释了Bonobos中的高基频

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摘要

Acoustic signals, shaped by natural and sexual selection, reveal ecological and social selection pressures . Examining acoustic signals together with morphology can be particularly revealing. But this approach has rarely been applied to primates, where clues to the evolutionary trajectory of human communication may be found. Across vertebrate species, there is a close relationship between body size and acoustic parameters, such as formant dispersion and fundamental frequency (f0). Deviations from this acoustic allometry usually produce calls with a lower f0 than expected for a given body size, often due to morphological adaptations in the larynx or vocal tract . An unusual example of an obvious mismatch between fundamental frequency and body size is found in the two closest living relatives of humans, bonobos (Pan paniscus) and chimpanzees (Pan troglodytes). Although these two ape species overlap in body size , bonobo calls have a strikingly higher f0 than corresponding calls from chimpanzees . Here, we compare acoustic structures of calls from bonobos and chimpanzees in relation to their larynx morphology. We found that shorter vocal fold length in bonobos compared to chimpanzees accounted for species differences in f0, showing a rare case of positive selection for signal diminution in both bonobo sexes.
机译：通过自然和性选择形状的声学信号，揭示生态和社会选择压力。将声学信号与形态一起检查可以特别揭示。但是这种方法很少被应用于灵长类动物，其中可以找到对人类交流的进化轨迹的线索。遍历脊椎动物物种，体尺寸和声学参数之间存在密切的关系，例如格式体分散和基频（F0）。来自该声学的偏差通常产生比给定体尺寸的F0更低的F0，通常是由于喉部或声带的形态适应。在人类，博博斯（PAN PANISCUS）和黑猩猩（PAN Troglodytes）的两个最近的生活亲属中发现了基本频率和身体尺寸之间明显不匹配的一个不寻常的例子。虽然这两个猿类物种在体型中重叠，但是Bonobo呼叫的F0比来自黑猩猩的相应呼叫更高。在这里，我们将来自Bonobos和黑猩猩的声音结构与其喉部形态相关。我们发现与黑猩猩的较短声音折叠长度与F0中的物种差异占物种差异相比，显示了罕见选择的Bonobo性别中的信号减速的肯定选择。

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  • 来源
    《Current Biology: CB》 |2018年第20期|共2页
  • 作者

    Sven Grawunder; Catherine Crockford; Zanna Clay; Ammie K. Kalan; Jeroen M.G. Stevens; Alexander Stoessel; Gottfried Hohmann;

  • 作者单位

    Department of Primatology Max-Planck-Institute for Evolutionary Anthropology;

    Department of Primatology Max-Planck-Institute for Evolutionary Anthropology;

    Durham University Department of Psychology;

    Department of Primatology Max-Planck-Institute for Evolutionary Anthropology;

    Centre for Research and Conservation Royal Zoological Society of Antwerp;

    Department of Human Evolution Max-Planck-Institute for Evolutionary Anthropology;

    Department of Primatology Max-Planck-Institute for Evolutionary Anthropology;

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