Clinal variation explains taxonomic discrepancy in the calling songs of shield-back katydids (Orthoptera: Tettigoniidae: Tettigoniinae: Aglaothorax)
Clinal variation explains taxonomic discrepancy in the calling songs of shield-back katydids (Orthoptera: Tettigoniidae: Tettigoniinae: Aglaothorax)
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DOI：
10.1111/j.1095-8312.2010.01532.x
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发表时间：
2010-12-01
影响因子：
1.9
通讯作者：
Cole, Jeffrey A.
中科院分区：
文献类型：
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作者：
Cole, Jeffrey A.
了解交配性状进化和物种形成之间的关系需要来自各种分类群的数据。我分析了盾背Katydid属Aglaothorax的叫声，它代表了一个鲜为人知的声学昆虫谱系。在受控实验室条件下记录了所有描述种和大多数亚种的野外采集雄性。判别分析是90.5%的成功分离的歌曲类型，但歌曲类型，从而划定不符合目前公认的分类群所定义的形态。这种差异是由两个物种引起的，即桑黑腹鱼和长翅桑黑腹鱼，它们的歌声在横贯山脉和加州南部的洛杉矶盆地的一个渐变群中变化。从西到东，脉冲频率和占空比减小，脉冲间隔增大。在接触带的物种识别选择，性选择和信号与环境之间的相互作用被认为是渐变群的原因。(C)2010年，伦敦林奈学会，林奈学会生物学杂志，2010年，101，910-921。
Understanding the relationship between mating trait evolution and speciation requires data from a variety of taxa. I analysed the calling songs of the shield-back katydid genus Aglaothorax, which represents a little-known lineage of acoustic insects. Field-collected males of all described species and most subspecies were recorded under controlled laboratory conditions. Discriminant analysis was 90.5% successful in separating song types, but the song types thus delineated did not correspond to currently recognized taxa as defined by morphology. The discrepancy is caused by two species, Aglaothorax morsei and Aglaothorax longipennis, the songs of which vary in a cline across the Transverse Ranges and the Los Angeles Basin of southern California. From west to east, pulse rate and duty cycle decrease and interpulse interval increases. Selection for species recognition at a contact zone, sexual selection and interactions between signals and the environment are considered as causes of the cline. (C) 2010 The Linnean Society of London, Biological Journal of the Linnean Society, 2010, 101, 910-921.