Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey, 08544.
Evolution. 2014 Jun;68(6):1553-60. doi: 10.1111/evo.12399. Epub 2014 Apr 13.
Hybridization has long been considered a process that prevents divergence between species. In contrast to this historical view, an increasing number of empirical studies claim to show evidence for hybrid speciation without a ploidy change. However, the importance of hybridization as a route to speciation is poorly understood, and many claims have been made with insufficient evidence that hybridization played a role in the speciation process. We propose criteria to determine the strength of evidence for homoploid hybrid speciation. Based on an evaluation of the literature using this framework, we conclude that although hybridization appears to be common, evidence for an important role of hybridization in homoploid speciation is more circumscribed.
杂交长期以来被认为是防止物种分化的过程。与这一历史观点相反，越来越多的经验研究声称有证据表明杂种形成而没有倍性变化。然而，杂交作为物种形成途径的重要性尚未得到很好的理解，并且有许多声称有杂交在物种形成过程中起作用的说法，但证据不足。我们提出了确定同源多倍体杂种形成证据强度的标准。基于使用该框架对文献的评估，我们得出的结论是，尽管杂交似乎很常见，但杂交在同源多倍体物种形成中起重要作用的证据更为有限。
