Strategic exploitation of fluctuating asymmetry in male Endler's guppy courtship displays is modulated by social environment
Strategic exploitation of fluctuating asymmetry in male Endler's guppy courtship displays is modulated by social environment
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雄性恩德勒孔雀鱼求爱表现中波动不对称性的策略利用受到社会环境的调节
DOI：
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发表时间：
2015
影响因子：
2.1
通讯作者：
M. Reichard
中科院分区：
文献类型：
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作者：
Radomil Řežucha;Radomil Řežucha;M. Reichard
信号特征的侧向不对称使雄性能够战略性地利用自己最好的一面。在许多动物中，身体的颜色和波动的不对称都是雄性吸引力的信号。我们通过实验证明，即使是性幼稚的雄性翼斑潜蝇也能够识别它们最吸引人的一面(即具有较高比例的类胡萝卜素色素)，并在求爱时优先使用它。值得注意的是，在偏向男性的社会环境中，男性保留了他们的战略信号，而在女性偏向的环境中，他们停止了战略信号的传递。色彩的不对称程度并不影响整体的求爱活动。在男性偏向的社会环境中，在男性与竞争对手争夺交配的社会环境中，求爱展示中的战略性偏向是最强烈和最可重复的。在3个月的时间里，个体颜色的不对称性发生了很大的变化。这表明，变色是成年后的一个动态特征，雄性能够根据其社会环境跟踪并战略性地利用它们的侧向不对称性。
Lateral asymmetry in signalling traits enables males to strategically exploit their best side. In many animals, both body colouration and fluctuating asymmetry are signals of male attractiveness. We demonstrated experimentally that even sexually naïve male Poecilia wingei were able to identify their most attractive side (i.e. that with a higher proportion of carotenoid pigmentation) and use it preferentially during courtship. Notably, males retained their strategic signalling in a male‐biased social environment, whereas they ceased to signal strategically in a female‐biased environment. The degree of asymmetry in colouration did not affect overall courtship activity. Strategic lateralization in courtship displays was strongest and most repeatable in the male‐biased social environment where males competed with rivals for matings. Individual asymmetry in colouration changed considerably over a period of 3 months. This suggests that colouration is a dynamic feature during adulthood and that males are capable of tracking and strategically exploiting their lateral asymmetry in accordance with their social environment.