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首页> 外文期刊>Biological Journal of the Linnean Society >When cryptic diversity blurs the picture: a cautionary tale from Iberian and North African Podarcis wall lizards
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When cryptic diversity blurs the picture: a cautionary tale from Iberian and North African Podarcis wall lizards

机译：当神秘的多样性模糊了画面时：伊比利亚和北非Podarcis壁蜥蜴的警示故事

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摘要

Evolutionary inference based on molecular phylogenetic methods has profoundly modified the way that we understand biological diversity, unravelling a higher evolutionary diversity than previously considered. An exemplary case of this is the group of Iberian and North African Podarcis wall lizards. More investigated than any other reptile group in Europe, the Podarcis hispanica species complex comprises unexpectedly high levels of phylogenetic diversity and illustrates how the discovery of further cryptic diversity may entangle evolutionary inference. In the present study, we report on the discovery of two new mitochondrial lineages in this species complex, reassess the phylogeny of the group, infer the age of major phylogenetic splits, and provide a detailed description of the geographical distributions of all known mitochondrial DNA lineages. Our data show that the differentiation of major lineages is older than previously considered, in most cases predating the Messinian salinity crisis. The new lineages discovered and their position in the phylogeny of the group profoundly modify previous biogeographical scenarios, clearly showing that the area today corresponding to the south-eastern corner of the Iberian Peninsula is a very important centre of diversification. The dating obtained for the differentiation of the lineages currently inhabiting this area coincides with the complex geological events that took place during the Miocene/Pleistocene transition, supporting the idea that both land movements and dramatic climatic oscillations during that period could be involved. Finally, the discovery of these new lineages, together with the observed distribution patterns, not only further augments the uncertainty associated to our understanding of the evolutionary history of this group of lizards, but also points to new areas of interest for future investigation
机译：基于分子系统进化方法的进化推论深刻地改变了我们理解生物多样性的方式，揭示了比以前认为更高的进化多样性。一个典型的例子是伊比利亚和北非Podarcis壁蜥蜴。与欧洲的其他爬行动物类别相比，Podarcis hispanica种复合物受到了更多的研究，它具有出乎意料的高水平的系统发育多样性，并说明了进一步的神秘多样性的发现可能如何纠缠进化推理。在本研究中，我们报告了在该物种复合体中发现两个新的线粒体谱系，重新评估该群体的系统发育，推断主要系统发育分裂的年龄并提供了所有已知线粒体DNA谱系的地理分布的详细描述。 。我们的数据表明，大多数血统的分化比以前考虑的要早，在大多数情况下是在墨西拿盐度危机之前。发现的新谱系及其在该族群系统发育中的地位深刻地改变了以前的生物地理情况，清楚地表明，当今与伊比利亚半岛东南角相对应的区域是一个非常重要的多元化中心。为区分目前居住在该地区的世系而获得的日期与中新世/更新世过渡期间发生的复杂地质事件相吻合，支持了这一时期可能涉及土地运动和剧烈的气候振荡的观点。最后，这些新世系的发现以及观察到的分布模式，不仅进一步增加了与我们对这组蜥蜴的进化历史的理解有关的不确定性，而且还指出了未来研究的新领域

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