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首页> 外文期刊>Zoologica Scripta: An International Journal of Evolutionary Zoology >Phylogeny and biogeography of the Rhinella marina species complex (Amphibia, Bufonidae) revisited: implications for Neotropical diversification hypotheses
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Phylogeny and biogeography of the Rhinella marina species complex (Amphibia, Bufonidae) revisited: implications for Neotropical diversification hypotheses

机译：回顾了Rhinella滨海物种复合体（两栖类，Bufonidae）的系统发生学和生物地理学：对新热带多样化假设的启示

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A number of distinct hypotheses have been proposed to account for the origin of the considerable biological diversity found in the Neotropics, which is still a matter of intense debate. Here, we conducted a phylogenetic analysis of the Rhinella marina complex, a group of species widely distributed in Central and South America, combining published data with new sequences of three mtDNA genes (12S, 16S and cyt b) in order to clarify the evolutionary relationships and biogeographical history of the group. We included eight of the ten currently recognized R. marina group species and several outgroups. Maximum parsimony, maximum likelihood, and Bayesian inference analyses produced similar topologies, with two well-supported main clades, each characterized by a deep subdivision. One of these major clades includes the samples of R. marina from Central America and Ecuador (west of the Andes), whereas the other comprises the remaining species of the group and samples of R. marina from the Amazon basin and other areas east of the Andes. A Bayesian coalescent-based method (BEAST) dated the divergence between the two major clades, and between the Central American and Ecuadorian clades to the Miocene, matching the timing of other Central-South American faunal divergences. Taken together, the results highlight the importance of Tertiary events such as the Pebas / marine incursions into the Amazon basin and Andean uplift for the diversification and historical biogeography of R. marina, making such taxa paraphyletic, and provide new perspectives on the debate on its species status.
机译：已经提出了许多不同的假说来解释新热带地区发现的大量生物多样性的起源，这仍然是一个激烈争论的问题。在这里，我们对Rhinellla marina复合体（在中美洲和南美洲广泛分布的一组物种）进行了系统发育分析，将已发表的数据与三个mtDNA基因（12S，16S和cyt b）的新序列相结合，以阐明进化关系以及该群体的生物地理历史。我们包括了十个目前公认的滨海罗非鱼种类中的八个，还有几个外群。最大简约性，最大似然性和贝叶斯推断分析产生了相似的拓扑，具有两个支撑良好的主要进化枝，每个进化枝都具有深层细分的特征。这些主要进化枝之一包括来自中美洲和厄瓜多尔（安第斯山脉以西）的R. marina样品，而另一个包括该群的其余物种以及来自亚马逊河流域和该地区以东其他地区的R. marina样品。安第斯山脉。贝叶斯基于联盟的方法（BEAST）指出了两个主要进化枝之间以及中美洲和厄瓜多尔进化枝与中新世之间的分歧，与其他中南美洲动物群落分歧的时间相吻合。综上所述，结果突出了第三纪事件的重要性，例如进入亚马逊河流域的Pebas /海洋入侵和安第斯山脉隆升对于滨海罗非鱼的多样化和历史生物地理学具有重要意义，使这类生物群具有共生性，并为其辩论提供了新的观点。物种状态。

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