The ecological stage maintains preference differentiation and promotes speciation
The ecological stage maintains preference differentiation and promotes speciation
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生态阶段维持偏好分化并促进物种形成
DOI：
10.1111/ele.13970
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发表时间：
2022
期刊：
影响因子：
8.8
通讯作者：
Grether, ed., Greg
中科院分区：
文献类型：
--
作者：
Boughman, Janette W.;Servedio, Maria R.;Grether, ed., Greg
有影响力的性选择物种形成模型假设，要么对普遍展示有单一的共同偏好，只有当雄性局部适应并因此处于高条件时才表达，要么共享基因座进化出针对展示和偏好的群体特异性等位基因。然而，许多密切相关的物种却在不同的特征上表现出巨大的差异。我们提出了一个二次接触模型，通过该模型，雌性保持对不同展示的偏好，这些展示表明雄性状况及其与不同环境的匹配，从而促进不同物种之间的生殖隔离。即使具有搜索成本和针对独立显示器的独立偏好基因座，也会发生这种情况。这种偏好也可以从长期变化中演变而来。之所以出现分歧，是因为条件依赖性展示和雌性偏好取决于当地生态，雌性获得不同的选择好处。鉴于环境之间普遍存在的生态差异，我们的模型可以帮助解释自然界中所见显示器的惊人辐射的演变。
Influential models of speciation by sexual selection posit either a single shared preference for a universal display, expressed only when males are locally adapted and hence in high condition, or that shared loci evolve population‐specific alleles for displays and preferences. However, many closely related species instead show substantial differences across categorically different traits. We present a model of secondary contact whereby females maintain preferences for distinct displays that indicate both male condition and their match to distinct environments, fostering reproductive isolation among diverging species. This occurs even with search costs and with independent preference loci targeting independent displays. Such preferences can also evolve from standing variation. Divergence occurs because condition‐dependent display and female preference depend on local ecology, and females obtain different benefits of choice. Given the ubiquity of ecological differences among environments, our model could help explain the evolution of striking radiations of displays seen in nature.