Song as an honest signal of developmental stress in the zebra finch (Taeniopygia guttata)
Song as an honest signal of developmental stress in the zebra finch (Taeniopygia guttata)
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DOI：
10.1016/s0018-506x(03)00124-7
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发表时间：
2003-08-01
影响因子：
3.5
通讯作者：
Catchpole, CK
中科院分区：
文献类型：
--
作者：
Spencer, KA;Buchanan, KL;Catchpole, CK
在许多鸟类中，雌性都表现出对唱更复杂歌曲的雄性的积极偏好。目前的性选择理论预测，这个信号要保持男性质量的诚实指标，它必须与发展或维持的潜在成本有关。关于歌曲制作和学习的成本问题，有相当多的争论。最近，营养应激假说提出，歌曲的复杂性可以作为早期发育史的指标，因为大脑中的歌曲控制核团在生命早期就已经形成。在这里，我们测试的营养压力假说，通过调查的影响，饮食压力的质量，成人的歌曲生产。此外，我们测试了在歌曲生产的发展过程中皮质酮升高的影响，以测试其可能参与介导的发展压力的影响。结果表明，饮食限制和皮质酮水平升高显着降低雏鸟的生长速度。此外，我们发现，实验强调鸟类开发的歌曲与显着较短的歌曲主题的持续时间和复杂性降低。这些结果提供了新的实验证据表明，复杂的歌曲剧目可能已经演变为男性质量的诚实信号，通过指示早期发育的养育条件。(C)2003年爱思唯尔公司All rights reserved.
In a wide range of bird species, females have been shown to express active preferences for males that sing more complex songs. Current sexual selection theory predicts that for this signal to remain an honest indicator of male quality, it must be associated with an underlying cost of development or maintenance. There has been considerable debate questioning the costs associated with song production and learning. Recently, the nutritional stress hypothesis proposed that song complexity could act as an indicator of early developmental history, since the song control nuclei in the brain are laid down early in life. Here we test the nutritional stress hypothesis, by investigating the effects of dietary stress on the quality of adult song produced. In addition, we tested the effects of elevated corticosterone during development on song production to test its possible involvement in mediating the effects of developmental stress. The results demonstrate that both dietary restriction and elevated corticosterone levels significantly reduced nestling growth rates. In addition, we found that experimentally stressed birds developed songs with significantly shorter song motif duration and reduced complexity. These results provide novel experimental evidence that complex song repertoires may have evolved as honest signals of male quality, by indicating early developmental rearing conditions. (C) 2003 Elsevier Inc. All rights reserved.