Complex coevolution of wing, tail, and vocal sounds of courting male bee hummingbirds
Complex coevolution of wing, tail, and vocal sounds of courting male bee hummingbirds
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DOI：
10.1111/evo.13432
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发表时间：
2018-03-01
期刊：
影响因子：
3.3
通讯作者：
Prum, Richard O.
中科院分区：
文献类型：
--
作者：
Clark, Christopher J.;McGuire, Jimmy A.;Prum, Richard O.
具有复杂生理基础的表型性状可能具有相应复杂的进化史。蜜蜂蜂鸟分支中的雄性用尾羽的声音向雌性求爱，尾羽在展示潜水时摆动。在35个物种的演化史上，扑动声频率在大多数枝条上都表现为渐进的、连续的特征。但至少有六个内部分支会发生两种主要的跳跃式变化：颤动模式的变化，或者作为声源的羽毛的变化，导致频率从一个离散值跳到另一个离散值。除了尾巴上的乐器，雄性也会用鸣管和翅膀上的羽毛发出的声音来向雌性求爱，并且在进化过程中可能会转移或更换乐器。在支持这一点，我们发现了一个负的系统发育之间的相关性存在的翅膀颤音和唱歌。我们假设这种转移发生，因为翅膀颤音和声乐歌曲服务类似的功能，因此是多余的。多个信号的自收敛也有三个独立的起源，其中相同的物种既产生有声（歌唱）频率扫描，又产生高度相似的非有声声音。此外，声乐作品、学歌作品也一再丢失。雄蜂蜂鸟用一系列不同的、共同进化的声音特征向雌蜂求爱。
Phenotypic characters with a complex physical basis may have a correspondingly complex evolutionary history. Males in the bee hummingbird clade court females with sound from tail-feathers, which flutter during display dives. On a phylogeny of 35 species, flutter sound frequency evolves as a gradual, continuous character on most branches. But on at least six internal branches fall two types of major, saltational changes: mode of flutter changes, or the feather that is the sound source changes, causing frequency to jump from one discrete value to another. In addition to their tail instruments, males also court females with sound from their syrinx and wing feathers, and may transfer or switch instruments over evolutionary time. In support of this, we found a negative phylogenetic correlation between presence of wing trills and singing. We hypothesize this transference occurs because wing trills and vocal songs serve similar functions and are thus redundant. There are also three independent origins of self-convergence of multiple signals, in which the same species produces both a vocal (sung) frequency sweep, and a highly similar nonvocal sound. Moreover, production of vocal, learned song has been lost repeatedly. Male bee hummingbirds court females with a diverse, coevolving array of acoustic traits.