Rapid evolution of the primate larynx?
Rapid evolution of the primate larynx?
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DOI：
10.1371/journal.pbio.3000764
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发表时间：
2020-08-01
期刊：
影响因子：
9.8
通讯作者：
Fitch, W. Tecumseh
中科院分区：
文献类型：
--
作者：
Bowling, Daniel L.;Dunn, Jacob C.;Fitch, W. Tecumseh
喉中的组织振动产生包括哺乳动物中的声音交流的大多数声音。因此，喉的形态预测是一个关键的目标选择，特别是在物种与高度发达的声音通信系统。在这里，我们提出了一个新的数据库的数字建模扫描喉从55个不同的哺乳动物物种，代表了广泛的身体大小的灵长类动物和食肉目。使用系统发育的比较方法，我们表明，灵长类动物的喉比食肉动物的喉进化得更快，导致更大的尺寸和预期的异速生长与身体大小的偏差增加的模式。这些结果意味着灵长类动物和食肉动物在限制喉大小的选择力平衡方面存在根本差异，并突出了灵长类动物的进化灵活性，这可能有助于解释为什么我们已经开发出复杂而多样的发声器官用于交流。
Tissue vibrations in the larynx produce most sounds that comprise vocal communication in mammals. Larynx morphology is thus predicted to be a key target for selection, particularly in species with highly developed vocal communication systems. Here, we present a novel database of digitally modeled scanned larynges from 55 different mammalian species, representing a wide range of body sizes in the primate and carnivoran orders. Using phylogenetic comparative methods, we demonstrate that the primate larynx has evolved more rapidly than the carnivoran larynx, resulting in a pattern of larger size and increased deviation from expected allometry with body size. These results imply fundamental differences between primates and carnivorans in the balance of selective forces that constrain larynx size and highlight an evolutionary flexibility in primates that may help explain why we have developed complex and diverse uses of the vocal organ for communication.