Molecular phylogenetics of howler monkeys (Alouatta, Platyrrhini) -: A comparison with karyotypic data
Molecular phylogenetics of howler monkeys (Alouatta, Platyrrhini) -: A comparison with karyotypic data
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DOI：
10.1007/s004120000128
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发表时间：
2001-07-01
期刊：
影响因子：
1.6
通讯作者：
Seuánez, HN
中科院分区：
文献类型：
--
作者：
Bonvicino, CR;Lemos, B;Seuánez, HN
基于细胞色素b DNA序列数据，对巴西的7种吼猴（Alouatta）物种进行了分子系统发育分析。简约法和邻接法构建的系统发育树将棕吼猴（Alouatta belzebul）和黑吼猴（A. fusca）归为一个分支中的姐妹群，而另一个有充分支持的分支中，红吼猴（A. seniculus）是最基部的分支，其次是黑须吼猴（A. nigerrima），它是长毛吼猴（A. macconnelli）/黄臂吼猴（A. stramineus）的姐妹谱系。种间序列差异的估计值通常较低，分歧时间的估计表明，主要的吼猴谱系是在一个较短的进化区间内出现的。与核型数据的比较证实了分子系统发育树的结构，表明长毛吼猴和黄臂吼猴相对于黑须吼猴关系更近。它还表明，XX/XY性染色体系统在几个谱系中得以保留，而XtX2Y/X1X1X2X2系统在吼猴的分化过程中至少独立出现了三次。此外，X1X2Y1Y2/X1X1X2X2系统可能出现过一次，或者也可能是两次且是独立出现的。
Molecular phylogenetic analyses of seven Brazilian Alouatta species, based on cytochrome b DNA sequence data were carried out. Parsimony and neighbor joining topologies grouped Alouatta belzebul and A. fusca as sister groups in one clade while another, well-supported clade contained A. seniculus as the most basal offshoot, followed by A. nigerrima as a sister lineage of A. macconnelli/A. stramineus. Estimates of inter-specific sequence divergence were generally low, and estimates of the time of divergence indicated that the main Alouatta lineages emerged during a short evolutionary interval. A comparison with karyotypic data confirmed the molecular topology showing a closer relationship between A. macconnelli and A. stramineus in respect to A. nigerrima. It also showed that the XX/XY sex chromosome system was maintained in several lineages while the XtX2Y/X1X1X2X2 system appeared independently at least three times during the radiation of howler monkeys. Moreover, the X1X2Y1Y2/X1X1X2X2 system might have appeared once or, alternatively, twice and independently.