| 鲁思凡,刘金,夏灿玮.2014.体征对灰眉岩鹀鸣唱特征的影响.动物学杂志,49(3):334-340. |
| 体征对灰眉岩鹀鸣唱特征的影响 |
| Lack of body size and beak length constraints on the song of Emberiza godlewskii |
| 投稿时间：2013-08-14 修订日期：2014-04-25 |
| DOI：10.13859/j.cjz.201403004 |
| 中文关键词: 灰眉岩鹀 鸣声特征 身体量度 |
| 英文关键词:Emberiza godlewskii Sound characteristic Morphological measurement |
| 基金项目:国家自然科学基金基础科学人才培养基金能力提高项目(野外实践) (J1210075) |
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| 中文摘要: |
| 声信号是鸟类交流的重要方式。鸟类的鸣声受到生境的塑造和雌性偏好的选择,也受到发声器官的影响,如种间的比较研究发现：体重大的鸟类鸣声频率低；喙短的鸟类鸣声频宽大。在种内是否也存在类似的规律,目前的结论还不一致。本研究于2012年6月在北京小龙门地区测量了17只灰眉岩鹀(Emberiza godlewskii)的形态参数以及鸣声的最高频率、最低频率、能量最大处频率和频宽,未发现体重或喙长与鸣声的频率特征存在显著的相关性。本文探讨了鸣声学习、性选择、及体征变异大小对身体量度与鸣声关系的影响。本研究还发现灰眉岩鹀鸣声中能量最大处频率(6.31 kHz)远高于经验公式的估算值(3.46 kHz),这可能暗示着灰眉岩鹀的鸣声受到强大的选择压力作用。 |
| 英文摘要: |
| Acoustic signal is important for bird communication. Differences in vocal characteristics are usually explained by habitat-dependent selection on signal transmission and/or sexual selection by female preference. The organ to produce signals can also be influence signal features. For example, the negative relationship between frequency and body size; negative relationship between frequency bandwidth and beak length. These negative relationships usually stand among species, but it is unclear if such relationships exist within species. We studied the sound from 17 individuals of Emberiza godlewskii, recorded in Beijing Xiaolongmen forest Park during the 2012 breeding season. We measured the maximum frequency, minimum frequency, peak frequency, frequency range, and found that none of these frequency traits was related to body size, or beak length. Possible reasons for these results are the vocal learning, female preferences, and small range of variation within species. Besides, we found peak frequency (6.31 kHz) is widely deviate from value (3.46 kHz) predicted for by empirical formula, which imply other selection than morphological measurement work on the vocal of Emberiza godlewskii. |
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