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首页> 外文期刊>Behavioral Ecology and Sociobiology >Female response to song reflects male developmental history in swamp sparrows
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Female response to song reflects male developmental history in swamp sparrows

机译：女性对歌曲的反应反映了沼泽麻雀中男性的发展历史

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One explanation for why female songbirds attend to male song is that the quality of a male's song is associated with the quality of his developmental history. We tested this hypothesis by playing back to female swamp sparrows (Melospiza georgiana) songs recorded from males of either inferior or superior developmental histories, as assessed by their rates of mass gain during the first 18 days post-hatching. Females showed significantly higher levels of courtship display in response to songs of males with superior growth than to songs of males with inferior growth. Out of nine song traits measured, only song duration correlated with variation in female response; duration was also the only trait that differed significantly in univariate comparisons between the superior growth songs and the inferior growth songs. In a multivariate analysis, however, inferior growth songs were best discriminated from superior growth songs by combining three song traits: trill rate, stereotypy, and the number of notes per syllable. We suggest that early developmental stress degrades song in many small ways, and that it is the cumulative effect of the resulting deficits that explains lower female response.
机译：为何女性鸣禽会参加男性歌曲的一种解释是，男性歌曲的质量与其发展历史的质量相关。我们通过播放雌性沼泽麻雀（Melospiza georgiana）歌曲（来自孵化后头18天的质量增加率来评估）来测试此假设，这些雌性麻雀是由发育历史较差或较高的男性录制的。女性对成长快的男性歌曲的反应比男性对成长慢的歌曲的求爱显示明显更高。在所测量的九种歌曲特征中，只有歌曲持续时间与女性反应的变化相关。持续时间也是唯一的特征，在上级成长歌曲和下级成长歌曲之间的单变量比较中有显着差异。然而，在多变量分析中，通过结合三个歌曲特征：颤音率，刻板印象和每个音节的音符数量，可以最好地将劣等成长歌曲与优等成长歌曲区分开。我们建议，早期的发育压力会以许多小方式使歌曲退化，这是由此产生的缺陷的累积效应解释了女性反应较低。

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