Song function and the evolution of female preferences - Why birds sing, why brains matter
Song function and the evolution of female preferences - Why birds sing, why brains matter
复制标题
DOI：
10.1196/annals.1298.012
复制
发表时间：
2004-01-01
期刊：
影响因子：
--
通讯作者：
Searcy, WA
中科院分区：
文献类型：
--
作者：
Nowicki, S;Searcy, WA
分析歌曲的功能及其作为通信信号的演变为理解负责歌曲学习，感知和生产的生理和神经机制提供了一个重要的背景。反过来也是正确的，理解歌曲学习的潜在机制可以深入了解歌曲作为一种交流信号是如何进化的。歌声有两个主要功能：将其他雄性动物从防御空间中驱逐出去，吸引雌性动物并刺激它们的求爱。我们在这里提出的发展压力假说的基础上的发展的歌曲系统的研究，建议如何学习功能的歌曲，包括复杂性和当地方言结构，可以作为男性质量的指标，女性在择偶有用。歌曲和雄性质量之间的联系取决于这样一个事实，即歌曲学习的大脑结构主要在孵化后的头几个月内发育，在同一时期，鸣禽可能会受到营养和其他发育压力。在面对压力时表现良好的人能够投入更多的资源来开发大脑，并有望相应地更好地学习歌曲。学习功能的歌曲，从而成为可靠的指标男性质量，与可靠性保持的发展成本的歌曲。来自实地和实验室研究的数据现在开始为发展压力假说提供广泛的支持，说明了歌曲学习的机制和进化分析的实用性。
Analyzing the function of song and its evolution as a communication signal provides an essential backdrop for understanding the physiological and neural mechanisms responsible for song learning, perception, and production. The reverse also is true-understanding the mechanisms underlying song learning provides insight into how song has evolved as a communication signal. Song has two primary functions: to repel other males from a defended space and to attract females and stimulate their courtship. The developmental stress hypothesis we present here builds on studies of the development of the song system to suggest how learned features of song, including complexity and local dialect structure, can serve as indicators of male quality useful to females in mate choice. The link between song and male quality depends on the fact that brain structures underlying song learning largely develop during the first few months post-hatching and that during this same period, songbirds are likely to be subject to nutritional and other developmental stresses. Individuals faring well in the face of stress are able to invest more resources to brain development and are expected to be correspondingly better at song learning. Learned features of song thus become reliable indicators of male quality, with reliability maintained by the developmental costs of song. Data from both field and laboratory studies are now beginning to provide broad support for the developmental stress hypothesis, illustrating the utility of connecting mechanistic and evolutionary analyses of song learning.