Prokop Zofia M, Drobniak Szymon M
Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland.
Anthropological Institute and Museum, University of Zurich, Winterthurerstrasse 190, CH, 8057, Zurich, Switzerland.
Evolution. 2016 Apr;70(4):913-21. doi: 10.1111/evo.12898. Epub 2016 Apr 4.
Female choice based on multiple male traits, rather than on any single one, has been reported in many species and may well be a rule rather than an exception. However, the implications this has for selection acting on choosiness itself remain underappreciated. We argue that this constitutes one of the important impediments to our understanding of the evolution of mate choice. We discuss this issue primarily in the context of the Fisherian model of sexual selection. We review theory and empirical data, showing how the crucial parameter of the model-genetic variation in male attractiveness-can be estimated when attractiveness is a function of multiple traits. Based on the reviewed theory, we show how relying on individual male traits, instead of overall attractiveness, can produce biased estimates of Fisherian benefits of female choice. This bias can be substantial, especially when many traits contribute to male attractiveness. We discuss a number of methodological issues that, we hope, will stimulate future studies and help resolving the long-standing mystery of mate choice.
在许多物种中，雌性基于多个雄性特征而非单一特征进行选择的情况已被报道，这很可能是一种普遍规律而非例外。然而，这对作用于择偶偏好本身的选择所产生的影响仍未得到充分认识。我们认为，这构成了我们理解配偶选择进化的重要障碍之一。我们主要在费希尔性选择模型的背景下讨论这个问题。我们回顾了理论和实证数据，展示了在吸引力是多个特征的函数时，如何估计模型的关键参数——雄性吸引力的遗传变异。基于所回顾的理论，我们展示了依赖单个雄性特征而非整体吸引力，如何导致对雌性选择的费希尔收益的偏差估计。这种偏差可能很大，尤其是当许多特征共同构成雄性吸引力时。我们讨论了一些方法学问题，希望能激发未来的研究，并有助于解开长期存在的配偶选择之谜。
