Snake evolution in Melanesia: origin of the Hydrophiinae (Serpentes, Elapidae), and the evolutionary history of the enigmatic New Guinean elapid Toxicocalamus
Snake evolution in Melanesia: origin of the Hydrophiinae (Serpentes, Elapidae), and the evolutionary history of the enigmatic New Guinean elapid Toxicocalamus
复制标题
美拉尼西亚的蛇类进化：水蛇亚科（蛇类、蛇科）的起源，以及神秘的新几内亚蛇类毒菖蒲的进化史
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
C. Parkinson
中科院分区：
文献类型：
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作者：
Jason L. Strickland;S. Carter;F. Kraus;C. Parkinson
毒蛇亚科Hydrophiinae包括40多个属和大约200种。这个分支的大多数成员居住在澳大利亚，并已得到很好的研究。但是，由于美拉尼西亚类群的分类单元采样差，基本的进化关系仍然没有得到很好的解决。美拉尼西亚属Ogmodon，Loveridgelaps和Salomonelaps没有被列入最近的系统发育研究，和新几内亚特有的，Toxicocalamus，已很少采样，有时恢复为多系。我们使用三个线粒体和四个核基因座为亚科产生了一个多基因座系统发育，以调查基础水生植物属之间的关系，并确定Toxicocalamus的地位。我们对这些位点进行了测序，其中8个描述了12个物种内Toxicocalamus，代表了最大的分子数据集，这属。我们发现，一个系统的近海岛弧在美拉尼西亚的起源中心的陆地物种的Hydrophiinae，我们恢复Toxicocalamus作为单系。毒竹属植物具有高度的遗传多样性和形态多样性，但有些分子多样性并不伴随着形态学特征的变化。我们记录了至少五个未描述的物种，所有的关键形态Toxicocalamus loriae（Boulenger，1898），使本种多系。需要继续对Toxicocalamus进行研究，以记录该属的多样性，并可能导致发现更多物种。我们增加的分类单元采样使我们能够更好地了解Hydrophiinae的进化和分类;然而，仍然有几个未采样的谱系，后期的研究可能会被用来测试我们的分类假设。
The venomous snake subfamily Hydrophiinae includes more than 40 genera and approximately 200 species. Most members of this clade inhabit Australia, and have been well studied. But, because of poor taxon sampling of Melanesian taxa, basal evolutionary relationships have remained poorly resolved. The Melanesian genera Ogmodon, Loveridgelaps, and Salomonelaps have not been included in recent phylogenetic studies, and the New Guinean endemic, Toxicocalamus, has been poorly sampled and sometimes recovered as polyphyletic. We generated a multilocus phylogeny for the subfamily using three mitochondrial and four nuclear loci so as to investigate relationships among the basal hydrophiine genera and to determine the status of Toxicocalamus. We sequenced these loci for eight of the 12 described species within Toxicocalamus, representing the largest molecular data set for this genus. We found that a system of offshore island arcs in Melanesia was the centre of origin for terrestrial species of Hydrophiinae, and we recovered Toxicocalamus as monophyletic. Toxicocalamus demonstrates high genetic and morphological diversity, but some of the molecular diversity is not accompanied by diagnostic morphological change. We document at least five undescribed species that all key morphologically to Toxicocalamus loriae (Boulenger, 1898), rendering this species polyphyletic. Continued work on Toxicocalamus is needed to document the diversity of this genus, and is likely to result in the discovery of additional species. Our increased taxon sampling allowed us to better understand the evolution and biogeography of Hydrophiinae; however, several unsampled lineages remain, the later study of which may be used to test our biogeographic hypothesis.
揭示 Aspidomorphus（蛇类：Elapidae）的神秘多样性：来自线粒体和核标记的证据。
影响因子：
4.1
作者：
Metzger,GenevieveA;Kraus,Fred;Allison,Allen;Parkinson,ChristopherL
通讯作者：
Parkinson,ChristopherL