Occurrence and life history correlates of vocal duetting in North American passerines
Occurrence and life history correlates of vocal duetting in North American passerines
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DOI：
10.1111/j.0908-8857.2008.04103.x
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发表时间：
2008-01-01
影响因子：
1.7
通讯作者：
Benedict, Lauryn
中科院分区：
文献类型：
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作者：
Benedict, Lauryn
声乐二重奏，即两只鸟发出时间上协调一致的发声，在分类和地理上不同的鸟类中已有报道。研究人员提出了许多与二重婚有关的潜在因素，包括长期的一夫一妻制、全年的领土防御和性羽毛单形症。由于大多数二翅目鸟类是热带物种，它们一直是迄今为止最全面研究的焦点。因此，确实需要关于温带物种鸟类二重唱的数据。我使用最近完成的北美鸟类物种报告来研究北美雀形目动物二重奏行为的频率、进化起源和潜在的生活史相关性。据报道，在12个鸟类科中有7%的物种表现出“二重奏”行为，这可能代表了17个不同的进化起源。两栖鸟类表现出明显的长期一夫一妻制和全年属地，其频率是非二偶鸟类的两倍以上：65%的二偶鸟类长期一夫一妻制，而非二偶物种的比例为27%；50%的二偶物种全年保卫同一领土，而非二偶物种的比例仅为11%。二性羽毛和非二性羽毛的单态频率在统计学上是难以区分的。对二倍体物种及其姊妹分类群的比较分析表明，二倍体的转变伴随着长期一夫一妻制和全年领土的获得，而不是与这些特征的丧失相关。这项研究提供了有趣的总结证据，表明促进二重婚的选择性因素可能与久坐不动的一夫一妻制生活方式有关，并且可能在不同的分类群体中起类似的作用。此外，二重唱在温带物种中可能比以前认识到的要普遍得多。
Vocal duetting, where two birds produce temporally coordinated vocalizations, has been reported in a taxonomically and geographically diverse set of avian species. Researchers have suggested a number of potential correlates of duetting, including long term monogamy, year-round territory defense and sexual plumage monomorphism. Because the majority of duetting species are tropical, they have been the focus of the most comprehensive studies to date. There is, therefore, a real need for data regarding avian duets in temperate species. I used the recently completed Birds of North America species reports to examine the frequency, evolutionary origins and potential life history correlates of duetting behavior in North American passerines. "Duetting" behavior was reported in 7% of species from 12 avian families, likely representing 17 separate evolutionary origins. Duetting species showed apparent long term monogamy and year-round territoriality at frequencies more than double those of non-duetting passerines: 65% of duetting species were long term monogamous, compared to 27% of non-duetting species, and 50% of duetting species defended the same territory throughout the year, compared with only 11% of non-duetting species. Duetting and non-duetting species showed statistically indistinguishable frequencies of sexual plumage monomorphism. Comparative analyses of duetting species and their sister taxa revealed that the shift to duetting is accompanied by a gain of long term monogamy and year-round territoriality more often than it is associated with a loss of those traits. This study provides intriguing summary evidence that selective factors promoting duetting may be associated with a sedentary, monogamous lifestyle, and may operate similarly across taxonomic groups. Furthermore, vocal duetting may be considerably more common among temperate-zone species than previously recognized.