High levels of diversity uncovered in a widespread nominal taxon: continental phylogeography of the neotropical tree frog Dendropsophus minutus.
High levels of diversity uncovered in a widespread nominal taxon: continental phylogeography of the neotropical tree frog Dendropsophus minutus.
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DOI：
10.1371/journal.pone.0103958
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Köhler J
中科院分区：
文献类型：
--
作者：
Gehara M;Crawford AJ;Orrico VG;Rodríguez A;Lötters S;Fouquet A;Barrientos LS;Brusquetti F;De la Riva I;Ernst R;Urrutia GG;Glaw F;Guayasamin JM;Hölting M;Jansen M;Kok PJ;Kwet A;Lingnau R;Lyra M;Moravec J;Pombal JP Jr;Rojas-Runjaic FJ;Schulze A;Señaris JC;Solé M;Rodrigues MT;Twomey E;Haddad CF;Vences M;Köhler J
分布在广大大陆地区和主要生物群落的物种为研究生物多样性提供了独特的模式系统，但也对这些区域的数据收集构成了艰巨的财政、后勤和政治挑战。树蛙（学名：Dendropsophus minutus，无尾目：雨蛙科）是一个名义上的物种，在南美洲大陆分布，可能代表多个物种的复合体，每个物种的分布范围更有限。为了了解该物种复合体范围内分子多样性的空间格局，我们获得了407个样品的两个线粒体基因，细胞色素氧化酶I（COI）和16S核糖体基因（16S）的DNA序列数据。minutus和密切相关的物种分布在11个国家，有效地构成了该组的整个范围。我们进行了系统发育和空间明确的地理分析，以评估谱系的遗传结构和推断祖先的地区。我们发现了43个有统计学支持的深线粒体谱系，其中几个可能代表了目前未被识别的不同物种。一个主要的分支，包含25个不同的谱系，包括来自D的模式产地的样品。minutus。我们将该分支定义为D。微小复合体其余的谱系与D. minutus复合体构成D.微小种组历史分析支持亚马逊起源的D。minutus种组，随后扩散到巴西东部，其中D. minutus complex的起源。根据我们的数据集，共有8个mtDNA谱系的范围> 100，000 km 2。其中一个占地近100万平方公里，包括多个生物群落。我们的研究结果，在一个新热带区脊椎动物前所未有的空间尺度和分辨率，证实广泛的两栖动物物种发生在低地南美洲，但在同一时间的一个很大比例的神秘的多样性仍然有待发现。
Species distributed across vast continental areas and across major biomes provide unique model systems for studies of biotic diversification, yet also constitute daunting financial, logistic and political challenges for data collection across such regions. The tree frog Dendropsophus minutus (Anura: Hylidae) is a nominal species, continentally distributed in South America, that may represent a complex of multiple species, each with a more limited distribution. To understand the spatial pattern of molecular diversity throughout the range of this species complex, we obtained DNA sequence data from two mitochondrial genes, cytochrome oxidase I (COI) and the 16S rhibosomal gene (16S) for 407 samples of D. minutus and closely related species distributed across eleven countries, effectively comprising the entire range of the group. We performed phylogenetic and spatially explicit phylogeographic analyses to assess the genetic structure of lineages and infer ancestral areas. We found 43 statistically supported, deep mitochondrial lineages, several of which may represent currently unrecognized distinct species. One major clade, containing 25 divergent lineages, includes samples from the type locality of D. minutus. We defined that clade as the D. minutus complex. The remaining lineages together with the D. minutus complex constitute the D. minutus species group. Historical analyses support an Amazonian origin for the D. minutus species group with a subsequent dispersal to eastern Brazil where the D. minutus complex originated. According to our dataset, a total of eight mtDNA lineages have ranges >100,000 km2. One of them occupies an area of almost one million km2 encompassing multiple biomes. Our results, at a spatial scale and resolution unprecedented for a Neotropical vertebrate, confirm that widespread amphibian species occur in lowland South America, yet at the same time a large proportion of cryptic diversity still remains to be discovered.
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影响因子：
4.1
作者：
Canedo, Clarissa;Haddad, Celio F. B.
通讯作者：
Haddad, Celio F. B.
影响因子：
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作者：
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DOI：
10.1111/j.1095-8312.2006.00581.x
发表时间：
2006-02-01
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影响因子：
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