Female mate preferences in Drosophila simulans: evolution and costs
Female mate preferences in Drosophila simulans: evolution and costs
复制标题
模拟果蝇的雌性配偶偏好：进化和成本
DOI：
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发表时间：
2010
影响因子：
2.1
通讯作者：
David J. Hosken
中科院分区：
文献类型：
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作者：
M. Sharma;Tom Tregenza;David J. Hosken
女性择偶偏好是性选择的核心，所有间接利益模型都要求女性偏好存在遗传变异。然而，这一点很少得到验证，相对较少的研究记录了女性偏好的遗传变异，更少的研究直接选择配偶偏好来明确表明它可以进化。此外，对择偶偏好的代价了解甚少，尽管这些对偏好进化有影响。我们在重复的模拟果蝇品系中选择了雌性对乌木-雄性的偏好，并在两个重复中产生了快速的进化反应，在五代选择后，雌性与乌木-雄性交配的比例从大约5%增加到30%。这种增加与乌木雄性的变化无关，因为我们的选择方案中仅包括雌性。除了与乌木雄性交配的适应性后果相关的成本外，我们没有发现交配偏好本身的成本。
Female mate preference is central to sexual selection, and all indirect benefit models require that there is genetic variation in female preference. This has rarely been tested however, with relatively few studies documenting heritable variation in female preference and even fewer that have directly selected on mate preference to unequivocally show that it can evolve. Additionally, costs of mate preference are poorly understood even though these have implications for preference evolution. We selected on female preference for ebony‐males in replicate Drosophila simulans lines, and generated a rapid evolutionary response in both replicates, with the proportion of females mating with ebony‐males increasing from approximately 5% to 30% after five generations of selection. This increase was independent of changes in ebony‐males as only females were included in our selection regime. We could detect no cost to mate preference itself other than that associated with the fitness consequences of mating with ebony males.