Phylogenetic position of the langur genera Semnopithecus and Trachypithecus among Asian colobines, and genus affiliations of their species groups.
Phylogenetic position of the langur genera Semnopithecus and Trachypithecus among Asian colobines, and genus affiliations of their species groups.
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DOI：
10.1186/1471-2148-8-58
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发表时间：
2008-02-25
影响因子：
3.4
通讯作者：
Roos, Christian
中科院分区：
文献类型：
--
作者：
Osterholz, Martin;Walter, Lutz;Roos, Christian
亚洲的进化史colobines了解较少。虽然最近证实了奇鼻猴的单系性，但叶猴属Presbytis，Semnopithecus和Trachypithecus之间的关系以及它们在亚洲colobines中的位置仍然不清楚。此外，在Tracypithecus中，有不同的物种群被确认，但它们的隶属关系仍然存在争议。为了解决这些问题，线粒体和Y染色体序列数据与遗传学相关，并结合逆转录酶整合的存在/不存在分析。分析的5 kb片段的线粒体基因组不允许解决叶猴属之间的系统发育关系，但检测到5个逆转录酶整合，其中链接Tracypithecus和Semnopithecus。根据Y染色体数据和线粒体细胞色素B基因的573 bp片段，种群T. [cristatus]，T. [obscurus]和T. [Francoisi]和它们的相互单系性是支持的，这也是由一个orthopathic逆转录插入支撑的。T. [vetulus]集群内Semnopithecus，这是证实了两个逆转录整合。此外，该种群为并系群，与T. vetulus与Sri Lankan形成一支，T. johnii与S. entellus。T. [pileatus]，因为Y染色体数据将其与T相关联。[cristatus]，T. [obscurus]和T. [francoisi]，而线粒体数据将其与Semnopithecus分支联系起来。这三个叶猴属之间的关系，也不是他们在亚洲colobines的位置可以解决5 kb的线粒体序列数据，但逆转录酶整合证实至少有一个共同的起源Semnopithecus和Trachypithecus。根据Y染色体和573 bp线粒体序列数据，T. [cristatus]，T. [obscurus]和T. [francoisi]代表Trachyphithecus属的真正成员，而T. [vetulus]集群内Semnopithecus。由于T. [vetulus]和多系的Semnopithecus，一个分裂的属分为三个物种组（S。entellus - North India，S. entellus - South India + T. johnii，S. entellus -斯里兰卡+ T.”这似乎是合适的。T. [pileatus]在两属之间的中间位置，表明种组可能是祖先杂交的结果。
The evolutionary history of the Asian colobines is less understood. Although monophyly of the odd-nosed monkeys was recently confirmed, the relationships among the langur genera Presbytis, Semnopithecus and Trachypithecus and their position among Asian colobines remained unclear. Moreover, in Trachypithecus various species groups are recognized, but their affiliations are still disputed. To address these issues, mitochondrial and Y chromosomal sequence data were phylogenetically related and combined with presence/absence analyses of retroposon integrations. The analysed 5 kb fragment of the mitochondrial genome allows no resolution of the phylogenetic relationships among langur genera, but five retroposon integrations were detected which link Trachypithecus and Semnopithecus. According to Y chromosomal data and a 573 bp fragment of the mitochondrial cytochrome b gene, a common origin of the species groups T. [cristatus], T. [obscurus] and T. [francoisi] and their reciprocal monophyly is supported, which is also underpinned by an orthologous retroposon insertion. T. [vetulus] clusters within Semnopithecus, which is confirmed by two retroposon integrations. Moreover, this species group is paraphyletic, with T. vetulus forming a clade with the Sri Lankan, and T. johnii with the South Indian form of S. entellus. Incongruence between gene trees was detected for T. [pileatus], in that Y chromosomal data link it with T. [cristatus], T. [obscurus] and T. [francoisi], whereas mitochondrial data affiliates it with the Semnopithecus clade. Neither relationships among the three langur genera nor their position within Asian colobines can be settled with 5 kb mitochondrial sequence data, but retroposon integrations confirm at least a common origin of Semnopithecus and Trachypithecus. According to Y chromosomal and 573 bp mitochondrial sequence data, T. [cristatus], T. [obscurus] and T. [francoisi] represent true members of the genus Trachypithecus, whereas T. [vetulus] clusters within Semnopithecus. Due to paraphyly of T. [vetulus] and polyphyly of Semnopithecus, a split of the genus into three species groups (S. entellus - North India, S. entellus - South India + T. johnii, S. entellus - Sri Lanka + T. vetulus) seems to be appropriate. T. [pileatus] posses an intermediate position between both genera, indicating that the species group might be the result of ancestral hybridization.
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影响因子：
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作者：
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通讯作者：
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