The role of courtship song in sexual selection and species recognition by female Drosophila melanogaster
The role of courtship song in sexual selection and species recognition by female Drosophila melanogaster
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DOI：
10.1016/j.anbehav.2003.11.023
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发表时间：
2004-11
期刊：
影响因子：
2.5
通讯作者：
Becky Talyn;H. Dowse
中科院分区：
文献类型：
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作者：
Becky Talyn;H. Dowse
雄性果蝇（Drosophila melanogaster）会产生复杂的求偶展示，雌性可以利用它来识别同种动物并帮助选择高质量的配偶。求爱歌曲由正弦和脉冲元素组成，是该显示的重要声学组成部分。尽管物种之间不同的特征已经被确定，但用于种内配偶选择的信号仍然未知，正弦歌曲的功能也是如此。为了进一步研究脉冲和正弦鸣叫的作用，我们改变了人工和编辑的鸣叫的特征，并将它们播放给果蝇群，以确定正弦或脉冲鸣叫参数是否有助于雌性配偶选择。播放人造歌曲并没有显着改变雄性求爱行为的数量。任何比例的正弦歌对雌性交配倾向没有影响，交配也不受正弦歌频率的影响。无论歌曲的结构、脉冲载波频率或脉冲间间隔如何，脉冲鸣叫的数量都会积极增加交配，直至达到阈值。这些结果表明，雌性使用脉冲鸣叫而不是正弦鸣叫来进行物种识别和种内配偶选择。雄性可能会继续发出正弦歌作为遗物，作为生理过程的副产品，或者因为它与不同形式的择偶信号有着千丝万缕的联系。简要讨论了歌曲记忆的作用。
Male fruit flies, Drosophila melanogaster, produce a complex courtship display, which females may use to identify conspecifics and to aid in choosing a high-quality mate. Courtship song, consisting of sine and pulse elements, is an important acoustic component of this display. Whereas characteristics that differ between species have been identified, the signals used for intraspecific mate choice remain unknown, as does the function of sine song. To investigate further the role of pulse and sine song, we varied characteristics of artificial and edited songs and played them to groups of flies to determine whether sine or pulse song parameters contribute to female mate choice. Playing artificial songs did not substantially change the amount of male courtship behaviour. Sine song in any proportion had no effect on female mating propensity, nor was mating affected by sine-song frequency. The amount of pulse song offered positively increased mating, up to a threshold, without regard to the structure of the song, pulse carrier frequency, or interpulse interval. These results indicate that females use pulse song, not sine song, for both species identification and intraspecific mate choice. Males may continue to produce sine song as a relic, as a by-product of a physiological process or because it is inextricably linked to a mate-choice signal in a different modality. The role of song memory is discussed briefly.