The Role of Climatic Factors in the Expression of an Intrasexual Signal in the Paper Wasp Polistes dominulus
The Role of Climatic Factors in the Expression of an Intrasexual Signal in the Paper Wasp Polistes dominulus
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DOI：
10.1111/j.1439-0310.2012.02067.x
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发表时间：
2012-08-01
期刊：
影响因子：
1.7
通讯作者：
Field, Jeremy
中科院分区：
文献类型：
--
作者：
Green, Jonathan P.;Rose, Charles;Field, Jeremy
在一个物种内部，性信号的使用在不同的种群之间是不同的。对于两性之间的特征，种群所经历的环境条件的差异可以在驱动男性装饰和女性偏好的变化方面发挥重要作用。然而，人们对竞争中使用的性内性状变异的维持因素知之甚少。在这项研究中，我们研究了气候条件在维持纸蜂性内信号表达变异中的作用。在不同温度和湿度条件下饲养蛹的实验结果表明，蛹发育期间的温度对该信号的表达有很强的影响。此外，对不同温度下饲养的黄蜂的存活率和体重的比较表明，信号表达表现出对发育温度的响应表型可塑性。温度对信号表达的影响与野外观察到的种群间信号表达的模式是一致的，这表明气候条件可能限制了某些种群的信号表达，而不是限制了其他种群的信号表达，从而推动了类似于支配种群的信号使用的变化。因此，环境条件在确定动物种群中性内信号的范围时可能是重要的，在这样做的过程中，可能在面对性别选择时保持性内特征的变异方面发挥作用。
Within a species, variation in the use of sexual signals is observed between different populations. For intersexual traits, differences in the environmental conditions experienced by populations can play an important role in driving variation in male ornaments and female preferences. However, little is known about the factors maintaining variation in intrasexual traits used in competition. In this study, we investigate the role of climatic conditions in maintaining variation in the expression of an intrasexual signal in the paper wasp Polistes dominulus. The results of an experiment in which pupae were housed under different temperature and humidity conditions revealed a strong effect of temperature during pupal development on the expression of the signal. Furthermore, a comparison of survival and body weight between wasps reared at different temperatures indicates that signal expression exhibits phenotypic plasticity in response to developmental temperature. The effect of temperature on signal expression is consistent with patterns of signal expression observed across populations in the wild and suggests that climatic conditions may act to constrain signal expression in some populations but not in others, driving variation in signal use within P.similar to dominulus. Environmental conditions may therefore be important in defining the scope for intrasexual signalling in animal populations and, in doing so, may play a role in maintaining variation in intrasexual traits in the face of sexual selection.