The Australian National University, Canberra, ACT, Australia.
Ecol Lett. 2010 Apr;13(4):409-20. doi: 10.1111/j.1461-0248.2010.01448.x.
A species may overlap with a mosaic of species across its geographic range. Many types of species interaction cause selection on mating traits, but their role in generating within-species divergence has been neglected. The pattern of reproductive character displacement (RCD) has been classically attributed to reinforcement, a process driven by selection against hybridisation. Recent reinforcement research shows that sexual isolation can result between displaced and non-displaced populations. We argue that RCD (and hence potentially speciation) among populations can be generated by a variety of fundamental species interactions beyond reinforcement. We unify these interactions under one process of mating trait divergence and speciation ('RCD speciation'). This process can occur in many geographic settings. Because selection is acting directly on mating traits, rapid speciation can result involving little differentiation in other traits. This pattern of diversification is seen in many groups and regions, and has previously been attributed to sexual selection alone.
一个物种可能与其地理分布范围内的多个物种重叠。许多类型的物种相互作用会导致对交配特征的选择，但它们在产生种内分化方面的作用被忽视了。生殖特征替换（RCD）的模式传统上归因于强化，这是一个由杂交选择驱动的过程。最近的强化研究表明，在被替换和未被替换的种群之间可能会产生性隔离。我们认为，除了强化之外，种群之间的 RCD（因此可能还有物种形成）可以由多种基本的物种相互作用产生。我们将这些相互作用统一在一个交配特征分歧和物种形成的过程（“RCD 物种形成”）下。这个过程可以在许多地理环境中发生。由于选择直接作用于交配特征，因此可以快速产生物种形成，而其他特征的分化很少。这种多样化模式在许多群体和地区都可以看到，以前仅归因于性选择。
