Huyghe K, Small M, Vanhooydonck B, Herrel A, Tadić Z, Van Damme R, Backeljau T
Department of Biology, University of Antwerp, Antwerp, Belgium.
Genetica. 2010 Mar;138(3):387-93. doi: 10.1007/s10709-010-9435-2.
If alternative phenotypes in polymorphic populations do not mate randomly, they can be used as model systems to study adaptive diversification and possibly the early stages of sympatric speciation. In this case, non random mating is expected to support genetic divergence among the different phenotypes. In the present study, we use population genetic analyses to test putatively neutral genetic divergence (of microsatellite loci) among three colour morphs of the lizard Podarcis melisellensis, which is associated with differences in male morphology, performance and behaviour. We found weak evidence of genetic divergence, indicating that gene flow is somewhat restricted among morphs and suggesting possible adaptive diversification.
如果多态种群中的替代表型不随机交配，它们可作为模型系统用于研究适应性多样化以及可能的同域物种形成的早期阶段。在这种情况下，非随机交配预计会促进不同表型之间的遗传分化。在本研究中，我们使用群体遗传学分析来测试蜥蜴意大利壁蜥三种颜色形态（与雄性形态、表现和行为差异相关）之间假定的中性遗传分化（微卫星位点的）。我们发现了微弱的遗传分化证据，表明形态之间的基因流动有所受限，并暗示可能存在适应性多样化。
