Chemoreception, symmetry and mate choice in lizards
Chemoreception, symmetry and mate choice in lizards
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DOI：
10.1098/rspb.2000.1137
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发表时间：
2000-07-07
影响因子：
4.7
通讯作者：
López, P
中科院分区：
文献类型：
--
作者：
Martín, J;López, P
关于波动不对称（FA）介导的性选择的研究几乎完全集中在视觉信号上，而忽略了化学通信，尽管许多物种依赖化学信号来吸引配偶。雌性根据视觉特征选择配偶在蜥蜴中似乎很少见。然而，雄性蜥蜴的股腺产生的信息素可能传递有关个体发育稳定性的化学信息，因此，Mie假设配偶选择可能基于化学线索。我们以蜥蜴Lacerta monticola为实验对象，分析了雄性发育稳定水平对雄性气味对雌性吸引力的影响。当我们提供两个体型相似的雄性时，雌性更倾向于将股孔中FA含量低的雄性的气味和股孔数量较多的雄性的气味联系起来。这说明雌性可以通过单独的化学信号来辨别雄性的FA，雌性更喜欢待在有高质量雄性标记的区域，从而增加了与高质量雄性交配的机会。我们认为雄性信息素的质量和/或数量可以将雄性的遗传质量传递给雌性，从而成为蜥蜴雌性适应性选择的基础。
Research on fluctuating asymmetry (FA)-mediated sexual selection has focused almost exclusively on visual signals and ignored chemical communication despite the fact that many species rely on chemical signals for attracting mates. Female mate choice based on visual traits appears to be rare in lizards. However, the femoral glands of male lizards produce pheromones which might transmit chemical information about an individual's developmental stability Therefore, Mie hypothesized that mate choice may be based on chemical cues. We analysed the effect of the developmental stability levels of males on the attractiveness of males' scents to females in a laboratory experiment with the lizard Lacerta monticola. When we offered two males of similar body size, females preferentially associated with the scents of males with low FA in their femoral pores and also with the scents of males with a higher number of femoral pores. This suggested that the females were able to discriminate the FA of the males by chemical signals alone and that the females preferred to be in areas marked by males of high quality, thus increasing their opportunities of mating with males of high quality We suggest that the quality and/or amount of male pheromones could communicate the heritable genetic quality of a male to the female and thereby serve as the basis for adaptive female choice in lizards.