The sprightly little sphaerodactyl: Systematics and biogeography of the Puerto Rican dwarf geckos Sphaerodactylus (Gekkota, Sphaerodactylidae)
The sprightly little sphaerodactyl: Systematics and biogeography of the Puerto Rican dwarf geckos Sphaerodactylus (Gekkota, Sphaerodactylidae)
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DOI：
10.11646/zootaxa.4712.2.1
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发表时间：
2019-12-19
期刊：
影响因子：
0.9
通讯作者：
Gamble, Tony
中科院分区：
文献类型：
--
作者：
Daza, Juan D.;Pinto, Brendan J.;Gamble, Tony
对加勒比爬行动物（两栖动物和爬行动物）的研究对我们了解进化模式和过程作出了重大贡献。这些研究的先决条件是准确的分类和健全的系统发育假设。一个值得注意的加勒比海辐射缺乏这样的数据是侏儒壁虎属的球形壁虎。自最初的物种描述以来，波多黎各球手纲的系统分类一直很混乱，没有包括完整或接近完整分类群抽样的分子系统发育。因此，我们结合多位点分子系统发育和广泛的形态学信息，以伊斯帕尼奥拉岛的大量物种为外群，研究了波多黎各滩Sphaerodacrylus壁虎的多样性。特别是，我们的工作重点是解决Sphaerodactylus macrolepis Gunther种复合体的分类问题。研究发现，大螯虾（S. macrolepis sensu law）（目前有2个名义种和9个亚种）至少由2个分支中的4个可诊断种组成：(1)来自维尔京群岛（包括圣克罗伊岛）和库莱布拉岛的姐妹种Sphaerodactylus macrolepis sensu stricto，以及来自小安的列斯群岛北部岛屿的S. parvus King；(2)来自波多黎各、别克斯岛和库莱布拉岛的所有其他大长趾蛛亚种。我们从同义词中复活Sphaerodactylus grandisquamis Stejneger来指代来自波多黎各的所有亚种，并将来自别克斯岛和西部库莱布拉岛的壁虎的亚种Sphaerodactylus inigoi Thomas & Schwartz提升。由此得出的系统发育和修订的分类将为后续研究球爪目的保护和进化提供有用的工具。
Studies of the Caribbean herpetofatma (amphibians and reptiles) have made significant contributions to our knowledge of evolutionary patterns and processes. A prerequisite for these studies are accurate taxonomies and robust phylogenetic hypotheses. One notable Caribbean radiation lacking such data are dwarf geckos of the genus Sphaerodacrylus. Systematics of the Puerto Rican Sphaerodactylus have been turbulent since the initial species descriptions and no molecular phylogenies exist that include complete or near-complete taxon sampling. Hem, we combine a multi-locus molecular phylogeny with extensive morphological information to investigate the current diversity of Sphaerodacrylus geckos from the Puerto Rican Bank, with a large number of species from Hispaniola as an outgroup. In particular, we focus our efforts on resolving the taxonomy of the Sphaerodactylus macrolepis Gunther species complex. We find S. macrolepis sensu law (currently two nominal species with nine subspecies) is made up of at least four diagnosable species within two clades: (1) the sister species Sphaerodactylus macrolepis sensu stricto from the Virgin Islands (including St. Croix) and Culebra, and S. parvus King from islands in the northern Lesser Antilles; and (2) all other Sphaemdactylus macrolepis subspecies from Puerto Rico, Vieques, and Culebra. We resurrect Sphaerodactylus grandisquamis Stejneger from synonymy to refer to all subspecies from Puerto Rico and elevate the subspecies Sphaerodactylus inigoi Thomas & Schwartz for geckos from Vieques and western Culebra. The resulting phylogeny and revised taxonomy will be a useful tool for subsequent research into Sphaerodactylus conservation and evolution.