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首页> 外文期刊>Biological Journal of the Linnean Society >A molecular perspective on the evolution of microteiid lizards (Squamata,Gymnophthalmidae), and a new classification for the family
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A molecular perspective on the evolution of microteiid lizards (Squamata,Gymnophthalmidae), and a new classification for the family

机译：分子蜥蜴进化的分子观点（鳞茎，Gymnophthalmidae），以及该家族的新分类

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摘要

A molecular phylogeny was reconstructed for 26 recognized genera of the Gymnophthalmidae using a total of 2379 bp of mitochondrial (12S, 16S and ND4) and nuclear (18S and c-mos) DNA sequences. We performed maximum parsimony (MP) and maximum likelihood (ML) analyses, and data partitions were analysed separately and in combination under MP. ML analyses were carried out only on the combined sequences for computational simplicity. Robustness for the recovered nodes was assessed with bootstrap and partitioned Bremer support (PBS) analyses. The total molecular evidence provided a better-resolved hypothesis than did separate analysis of individual partitions, and the PBS analysis indicates congruence among independent partitions for support of some internal nodes. Based on this hypothesis, a new classification for the family is proposed. Alopoglossus, the sister group of all the other Gymnophthalmidae was allocated to a new subfamily Alopoglossinae, and Rhachisaurus (a new genus for Anotosaura brachylepis) to the new Rhachisaurinae. Two tribes are recognized within the subfamily Gymnophthalminae: Heterodactylini and Gymnophthalmini, and two others within Cercosaurinae (Ecpleopini and Cercosaurini). Some ecological and evolutionary implications of the phylogenetic hypothesis are considered, including the independent occurrence of limb reduction, body elongation, and other characters associated with fossoriality.
机译：使用总共2379 bp的线粒体（12S，16S和ND4）和核（18S和c-mos）DNA序列重建了26个公认的裸眼科属的分子系统发育。我们进行了最大简约（MP）和最大似然（ML）分析，并在MP下单独或组合分析了数据分区。为了简化计算，仅对组合序列进行了ML分析。使用引导程序和分区的Bremer支持（PBS）分析评估恢复节点的稳健性。总的分子证据比单个分区的单独分析提供了更好的假设，PBS分析表明独立分区之间的一致性，以支持某些内部节点。基于此假设，提出了一种新的家庭分类。 Alopoglossus是所有其他Gymnophthalmidae的姐妹组，被分配到一个新的亚科Alopoglossinae，而Rhachisaurus（一种新的Rhinosura brachylepis属）被分配到了新的Rhachisaurinae。裸眼科亚科中确认了两个部落：杂齿龙和裸眼科，而尾鳍龙科中的另外两个部落（Ecpleopini和Cercosaurini）。系统发育假说的一些生态学和进化意义被考虑，包括肢体减少，身体伸长以及与假性相关的其他特征的独立发生。

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