Robillard Tony, Höbel Gerlinde, Carl Gerhardt H
Division of Biological Sciences, University of Missouri-Columbia, 215 Tucker Hall, Columbia, MO 65211, USA.
Cladistics. 2006 Dec;22(6):533-545. doi: 10.1111/j.1096-0031.2006.00118.x.
We studied the advertisement signals in two clades of North American hylid frogs in order to characterize the relationships between signal acoustic structure and underlying behavior. A mismatch was found between the acoustic structure and the mechanism of sound production. Two separate sets of phylogenetic characters were coded following acoustic versus mechanistic criteria, and exploratory treatments were made to compare their respective phylogenetic content in comparison with the molecular phylogeny (Faivovich et al., 2005). We discuss the consequences of the acoustic/mechanistic mismatch in terms of significance of acoustic characters for phylogenetic and comparative studies; and the evolution of vocalizations in North American treefrogs. Considering only the acoustic structure of frog vocalizations can lead to misleading results in terms of both phylogenetic signal and evolution of vocalizations. In contrast, interpreting the acoustic signals with regard to the mechanism of sound production results in consistent phylogenetic information. The mechanistic coding also provides strong homologies for use in comparative studies of frog vocalizations, and to derive and test evolutionary hypotheses.
我们研究了北美雨蛙科两个分支中的广告信号，以描述信号声学结构与潜在行为之间的关系。我们发现声学结构与发声机制之间存在不匹配。按照声学标准和机制标准对两组不同的系统发育特征进行编码，并进行探索性处理，以将它们各自的系统发育内容与分子系统发育（法伊沃维奇等人，2005年）进行比较。我们从声学特征对系统发育和比较研究的重要性以及北美树蛙发声的进化方面讨论了声学/机制不匹配的后果。仅考虑蛙类发声的声学结构，在系统发育信号和发声进化方面都可能导致误导性结果。相比之下，根据发声机制来解释声学信号会产生一致的系统发育信息。机制编码还为蛙类发声的比较研究提供了强大的同源性，用于推导和检验进化假说。
