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首页> 外文期刊>Herpetologica >Courtship behavior in the Alpine newt Triturus alpestris at two different densities of males
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Courtship behavior in the Alpine newt Triturus alpestris at two different densities of males

机译：两种不同密度的雄性高山newTriturus alpestris的求爱行为

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摘要

The aim of this laboratory experiment was to examine courtship behavior and reproductive success under two different perceived male densities ill the Alpine newt (Triturus alpestris). Male behavioral patterns were similar at unbiased and male-biased operational sex ratios (OSR). Although the exhibition of hiring behaviors is risky in the presence of other males, no difference in the frequencies of displays was found at the two male, densities. Similarly, the responsiveness of females towards males and the Success rate of the encounters (i.e. spermatophore transfer) were not explained by file OSR. Our results show that courting Alphine newts do not change their courtship patterns when other males are present and do not interact directly. However they are not necessarily opposed to those of previous experiments showing sexual interference awl ,female aversion in male-biased OSR with possibility of interactions. These observations suggest that the evolution of courtship behavior may not be driven by the risk of sexual interference with other males prior to potential physical contact and that the benefits of breeding regardless of OSR can overcome the risk of Competition at male-biased OSR.
机译：该实验室实验的目的是研究在高山new（Triturus alpestris）的两种不同的雄性密度下的求偶行为和生殖成功。男性行为模式在无偏向和偏向工作性别比（OSR）下相似。尽管在有其他男性在场的情况下表现出雇用行为是有风险的，但在两个男性的密度下，展示频率没有发现差异。同样，文件OSR也没有解释雌性对雄性的反应能力和相遇成功率（即精子转移）。我们的结果表明，当有其他雄性存在且不直接互动时，求爱Alphine ts不会改变他们的求爱模式。然而，它们并不一定要与先前的实验相反，后者显示性干扰锥子，男性偏爱的OSR中的女性厌恶并可能相互作用。这些观察结果表明，在潜在的身体接触之前，求爱行为的演变可能不受与其他雄性发生性干扰的风险的驱动，并且不论OSR的繁殖优势都能克服雄性OSR的竞争风险。

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