Phylogenetic relationships of southern Wallacean ranid frogs (Anura: Ranidae: Hylarana)
Phylogenetic relationships of southern Wallacean ranid frogs (Anura: Ranidae: Hylarana)
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DOI：
10.11646/zootaxa.5150.4.7
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发表时间：
2022-06-09
期刊：
影响因子：
0.9
通讯作者：
Mcguire, Jimmy A.
中科院分区：
文献类型：
--
作者：
Reilly, Sean B.;Arifin, Umilaela;Mcguire, Jimmy A.
蛙科的青蛙在亚洲是多种多样的，据认为大约在1000万年前分散到Sahul陆架，在那里它们辐射成十几种。小巽他群岛的Hylarana florensis和H. elberti以及Wallacea东部的H. moluccana被认为属于Papurana亚属，但这还没有得到分子数据的证实。我们分析了来自五个岛屿的水螅属物种的线粒体DNA，这些岛屿跨越了已报道的H. florensis和H. elberti的分布范围，并将它们与确认的Papurana物种和水螅属中密切相关的亚属进行了比较。我们发现小巽他H. florensis和H. elberti形成了一个分支，是澳大利亚-巴布亚巴布亚组合的姐妹。物种划分分析和分化时间估计表明，在物种水平上，龙目岛上的弗洛伦斯人可能与弗洛雷斯上的弗洛伦斯人不同。同样，松巴岛和帝汶岛的赫伯特人种群可能彼此不同，也可能与韦塔尔岛的赫伯特人种群不同，韦塔尔岛是赫伯特人的类型地点。来自Babar岛的样本被认为是H. elberti的成员，实际上属于广泛分布的H. daemeli，它分布在澳大利亚北部，横跨新几内亚，以及邻近的Tanimbar岛。这些结果表明，小Sundas可能是Sahul陆架殖民的踏脚石，而小Sundas的Papurana蛙的物种多样性被低估了。
Frogs in the family Ranidae are diverse in Asia and are thought to have dispersed to the Sahul Shelf approximately 10 million years ago, where they radiated into more than a dozen species. Ranid species in the intervening oceanic islands of Wallacea, such as Hylarana florensis and H. elberti from the Lesser Sundas and H. moluccana from eastern Wallacea, are assumed to belong to the subgenus Papurana, yet this has not been confirmed with molecular data. We analyzed mitochondrial DNA of Hylarana species from five islands spanning the reported ranges of H. florensis and H. elberti and compared them to confirmed Papurana species and closely related subgenera within Hylarana. We find that the Lesser Sunda H. florensis and H. elberti form a clade that is sister to the rest of the Australo-Papuan Papurana assemblage. Species delimitation analyses and divergence time estimates suggest that populations of H. florensis on Lombok may be distinct from those on Flores at the species level. Likewise, populations of H. elberti on Sumba and Timor may be distinct from each other and from those on Wetar, tshe type locality of H. elberti. Samples from Babar Island thought to be members of H. elberti in fact belong to the wide-ranging H. daemeli, which occurs in northern Australia, across New Guinea, and on the neighboring island of Tanimbar. These results suggest that the Lesser Sundas may have served as a stepping-stone for colonization of the Sahul Shelf and that species diversity of Papurana frogs is underestimated in the Lesser Sundas.