Artificial Selection of Spectral Sensitivity and Its Effects in Poecilia reticulata

9317391恩德勒第二性征在动物中很常见，而雄性性状有时发展得如此强烈，以至于他们看起来不适应。许多性选择的理论模型试图解释通过女性选择而产生的显性表现特征的进化。大多数模特都有一个共同的特点，那就是女性的偏好应该决定男性特征的进化方向。然而，大多数研究只关注女性选择男性对单代的影响。恩德勒博士将研究女性偏好变化的长期影响。是什么因素导致性别选择的特征朝着特定的方向进化？%一个可能的进化偏见是感觉系统对特征的感知；一些特征比其他特征更容易被感知，鉴于感觉系统对信号的某些方面比其他方面更敏感，对信号的某些方面的区分比其他方面更容易。恩德勒博士将通过对雌性偏爱的广泛人工选择及其对雄性特征的次要影响，来研究感官偏见的影响。这些问题不仅从性别选择的角度来看是有趣和重要的，而且对物种的起源和维持也有重要的影响，因为性别选择的特征经常用于物种识别和隔离。

9317391 Endler Secondary sexual traits are common in animals, and male traits are sometimes so strongly developed that they appear maladaptive. Numerous theoretical models of sexual selection attempt to account for the evolution of conspicuous sexual display traits through female choice. One property common to most models is that female preferences should determine the direction of evolution of male traits. However, most studies look only at the single-generation effects of female choice of males. Dr. Endler will examine the long-term effects of changes in female preferences. What factors cause sexually selected traits to evolve in particular directions?%%% One possible evolutionary bias is in the perception of traits by the sensory system; some traits are more easily perceived than others, and given that sensory systems are more sensitive to some aspects of signal than others, discrimination is easier for some aspects of signal than others. Dr Endler will examine the effects of sensory biases by means of an extensive artificial selection of female preferences and its secondary effects on male traits in Poecilia reticulata. These questions are not only interesting and important from the viewpoint of sexual selection, but also have important implications for the origin and maintenance of species because sexually selected traits are often used in species recognition and isolation.***