Molecular phylogeny of microhylid frogs (Anura: Microhylidae) with emphasis on relationships among New World genera.
Molecular phylogeny of microhylid frogs (Anura: Microhylidae) with emphasis on relationships among New World genera.
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DOI：
10.1186/1471-2148-12-241
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发表时间：
2012-12-10
影响因子：
3.4
通讯作者：
Haddad CF
中科院分区：
文献类型：
--
作者：
de Sá RO;Streicher JW;Sekonyela R;Forlani MC;Loader SP;Greenbaum E;Richards S;Haddad CF
在过去的十年里，我们看到了人们在修订两栖动物系统学方面付出了巨大的努力。来自 DNA 序列数据的系统发育重建在这些修订研究中发挥了核心作用，但通常对不同的青蛙科 Microhylidae 样本不足。在这里，我们提出了一项详细的系统发育研究，重点是扩展先前关于这个世界性家族内部关系的假设。具体来说，我们重点评估新世界属和那些系统发育亲缘关系不确定的类群（即不确定的 sedis）之间的关系。对 1 个线粒体基因和 3 个核基因（约 2.8 kb）进行测序以评估系统发育关系。我们史无前例地对 200 个微齿类群进行了采样，这些类群代表了目前公认的亚科的 91% 和新世界属的 95%。我们的分析并没有完全解决支持先前研究的亚科之间的关系，这些研究表明该分支的早期快速多样化。我们观察到 Synapturanus 和 Otophryninae 亚科的 Otophryne 之间存在密切的关系。在腹胃亚科内，各属之间的关系得到了很好的解决。耳鲽亚科与所有其他新世界小鲽亚科有远缘关系，这些新世界鲽鲽亚科是作为单系类群胃鲽亚科被发现的。在胃鲀亚科中，有五个属被恢复为非单系；我们建议进行分类学重新排列，使所有属成为单系。这种关系假说和新大陆小齿鱼的最新分类可以作为更好地理解该类群的进化历史的指南，该类群显然受到趋同形态进化和染色体减少的影响。根据根据先前研究和化石数据的假设进行校准的分歧分析，居住在新世界的微水兽属似乎起源于渐新世晚期到中新世中期逐渐冷却的时期。
Over the last ten years we have seen great efforts focused on revising amphibian systematics. Phylogenetic reconstructions derived from DNA sequence data have played a central role in these revisionary studies but have typically under-sampled the diverse frog family Microhylidae. Here, we present a detailed phylogenetic study focused on expanding previous hypotheses of relationships within this cosmopolitan family. Specifically, we placed an emphasis on assessing relationships among New World genera and those taxa with uncertain phylogenetic affinities (i.e., incertae sedis). One mitochondrial and three nuclear genes (about 2.8 kb) were sequenced to assess phylogenetic relationships. We utilized an unprecedented sampling of 200 microhylid taxa representing 91% of currently recognized subfamilies and 95% of New World genera. Our analyses do not fully resolve relationships among subfamilies supporting previous studies that have suggested a rapid early diversification of this clade. We observed a close relationship between Synapturanus and Otophryne of the subfamily Otophryninae. Within the subfamily Gastrophryninae relationships between genera were well resolved. Otophryninae is distantly related to all other New World microhylids that were recovered as a monophyletic group, Gastrophryninae. Within Gastrophryninae, five genera were recovered as non-monophyletic; we propose taxonomic re-arrangements to render all genera monophyletic. This hypothesis of relationships and updated classification for New World microhylids may serve as a guide to better understand the evolutionary history of this group that is apparently subject to convergent morphological evolution and chromosome reduction. Based on a divergence analysis calibrated with hypotheses from previous studies and fossil data, it appears that microhylid genera inhabiting the New World originated during a period of gradual cooling from the late Oligocene to mid Miocene.
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影响因子：
2.5
作者：
Ford, Linda S.;Cannatella, David C.
通讯作者：
Cannatella, David C.
影响因子：
56.9
作者：
Bossuyt, F;Milinkovitch, MC
通讯作者：
Milinkovitch, MC
影响因子：
1.5
作者：
BLOMMERSSCHLOSSER, RMA
通讯作者：
BLOMMERSSCHLOSSER, RMA
影响因子：
3.3
作者：
EMERSON, SB
通讯作者：
EMERSON, SB
影响因子：
0.8
作者：
Fabrezi, Marissa;Quinzio, Silvia;de Sa, Rafael O.
通讯作者：
de Sa, Rafael O.