Molecular Systematics of the Leptodeirini (Colubroidea: Dipsadidae) Revisited: Species-tree Analyses and Multi-locus Data
Molecular Systematics of the Leptodeirini (Colubroidea: Dipsadidae) Revisited: Species-tree Analyses and Multi-locus Data
复制标题
重新审视细链藻（Colubroidea：Dipsadidae）的分子系统学：物种树分析和多位点数据
作者：
D. Mulcahy;Thomas H. Beckstead;J. Sites
摘要猫眼蛇属（Leptodeira）与夜蛇属（Hypsiglena和Pseudoleptodeira）的形态学和免疫学研究结果表明，猫眼蛇属与钝头藤蛇属（Imantodes）和云雾林蛇属（Cryophis hallbergi）亲缘关系较近。我们从六个编码蛋白质的核基因座收集序列数据（SLC30A1、ZEB2、FSHR、NTF3、DNAH3和PNN; 4149 bp）和其他mtDNA数据（nad5; 955 bp）添加到已发表的cob和nad4中（总2387 bp mtDNA）来自这些和其他捕食脊椎动物的后尖牙，轻度毒蛇（青蛙和蜥蜴）和其他几个捕食无脊椎动物（食鹅动物）的dipsadine属（Dipsas，Sibon和Aptus）。我们使用连接和结合物种树方法分析关系。当使用连接或合并方法单独分析时，核数据支持与mtDNA数据不同的整体拓扑结构。与线粒体DNA数据一样，核数据也支持Leptodeira + Imantodes的关系，但相反，这个分支更接近食goo-eater，而夜蛇是该群体的基础分歧。当数据在串联分析中结合时，更多的mtDNA数据似乎压倒了核数据，但在合并模型下并非如此。
Abstract Cat-eyed snakes (Leptodeira) were thought to be closely related to nightsnakes (Hypsiglena and Pseudoleptodeira) based on morphology and immunological data, which allied these genera with blunt-headed vine snakes (Imantodes) and the Cloud Forest Snake (Cryophis hallbergi ). We collected sequence data from six protein-encoding nuclear loci (SLC30A1, ZEB2, FSHR, NTF3, DNAH3, and PNN; 4149 bp) and additional mtDNA data (nad5; 955 bp) added to published cob and nad4 (total 2387 bp mtDNA) from these and other rear-fanged, mildly venomous snakes that prey on vertebrates (frogs and lizards) and from several other dipsadine genera (Dipsas, Sibon, and Atractus) that prey on invertebrates (goo-eaters). We analyzed relationships using concatenation and a coalescent species-tree method. When analyzed separately, using either concatenation or coalescent methods, nuclear data support a different overall topology from the mtDNA data. Like the mtDNA data, the nuclear data support the Leptodeira + Imantodes relationship, but instead place this clade more closely to the goo-eaters, with the nightsnakes as the basal divergence in the group. When the data are combined in concatenation analyses, the more variable mtDNA data appear to overwhelm the nuclear data, but not under the coalescent model.
影响因子：
6.5
作者：
Huelsenbeck, JP;Rannala, B
通讯作者：
Rannala, B