Songbird chemosignals: volatile compounds in preen gland secretions vary among individuals, sexes, and populations.
Songbird chemosignals: volatile compounds in preen gland secretions vary among individuals, sexes, and populations.
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DOI：
10.1093/beheco/arq033
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发表时间：
2010-05
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影响因子：
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通讯作者：
Danielle J Whittaker;H. Soini;J. Atwell;Craig Hollars;M. Novotny;E. Ketterson
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文献类型：
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作者：
Danielle J Whittaker;H. Soini;J. Atwell;Craig Hollars;M. Novotny;E. Ketterson
化学信号已经在许多动物中被记录，但它在鸟类物种，特别是鸣禽中的潜在重要性，却很少受到关注。我们测试了是否挥发性化合物的羽毛油的鸣禽（Junco hyemalis）包含可靠的信息，个人身份，性别，或人口的起源，重复采样圈养的男性和女性容科斯来自2个最近分歧junco人口在南加州。其中一个种群最近定居在城市环境中;另一个种群居住在典型的山地环境中。这些鸟在未成年时被野外捕获，在相同的条件下饲养，并在采样前饲喂相同的饮食10个月。我们使用毛细管气相色谱-质谱法来量化19种挥发性化合物的相对丰度，这些化合物先前显示在该物种中随季节变化。我们发现，个人重复性以及显着的性别和人口差异的挥发性配置文件。在一个共同的环境中，种群差异的持续存在表明，羽毛油化学可能有一个遗传基础，因此可能会迅速演变，以应对环境变化。这些发现表明，鸣禽梳理油气味有可能作为化学信号与配偶识别或生殖隔离。
Chemical signaling has been documented in many animals, but its potential importance in avian species, particularly songbirds, has received far less attention. We tested whether volatile compounds in the preen oil of a songbird (Junco hyemalis) contain reliable information about individual identity, sex, or population of origin by repeated sampling from captive male and female juncos originating from 2 recently diverged junco populations in southern California. One of the populations recently colonized an urban environment; the other resides in a species-typical montane environment. The birds were field-caught as juveniles, housed under identical conditions, and fed the same diet for 10 months prior to sampling. We used capillary gas chromatography-mass spectrometry to quantify the relative abundance of 19 volatile compounds previously shown to vary seasonally in this species. We found individual repeatability as well as significant sex and population differences in volatile profiles. The persistence of population differences in a common environment suggests that preen oil chemistry likely has a genetic basis and may thus evolve rapidly in response to environmental change. These finding suggest that songbird preen oil odors have the potential to function as chemosignals associated with mate recognition or reproductive isolation.