Mitochondrial phylogeny and systematics of baboons (Papio)
Mitochondrial phylogeny and systematics of baboons (Papio)
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DOI：
10.1002/ajpa.10340
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发表时间：
2004-05-01
影响因子：
2.8
通讯作者：
Rogers, J
中科院分区：
文献类型：
--
作者：
Newman, TK;Jolly, CJ;Rogers, J
狒狒（Papio，s.s.）包括一系列广泛分布于撒哈拉以南非洲的近缘异源植物（亚种或密切相关的物种）。尽管对它们的生态学、形态学和行为进行了广泛的研究，但关于它们的系统发育关系的分歧仍然存在，正如目前至少有三种主要的、相互竞争的分类学处理方法共存所表示的那样。为了帮助解决这个问题，我们对来自五个被广泛认可的“主要”异源分类群的40个个体的线粒体DNA的900个碱基进行了类似的测序。与大多数灵长类物种相比，总序列多样性（>5%）很高。主要线粒体。进化枝对应于公认的异源分类群，重要的例外是来自黄色狒狒和橄榄狒狒的单倍型形成单一的单系进化枝，其中两个异源分类群不包含相互排斥的簇。主要的分支明确地落入模式：（chacma（几内亚（hamadryas（黄色+橄榄色）。这一系统发生学并不支持将蟾蜍与所有其他狒狒（“沙漠”与“稀树草原”）对立起来的分类学，但与所有可定义的异源分类群都应被视为坐标的观点是一致的，无论是作为“系统发生”种还是“生物学”亚种。肯尼亚和坦桑尼亚的黄色和橄榄狒狒的单倍型的密切关系和未分离的分布是无法解释的，但可能反映了整个记录的杂交区的基因渗入。与古生物学数据相结合，整体的遗传学研究表明，现存的狒狒起源于非洲南部，所有现存的谱系在大约1.8 Ma时都有一个共同的线粒体祖先。(C)2004 Wiley-Liss，Inc.
Baboons (Papio, s.s.) comprise a series of parapatric allotaxa (subspecies or closely related species) widely distributed in sub-Saharan Africa. Despite extensive studies of their ecology, morphology, and behavior, disagreement about their phylogenetic relationships continues, as expressed in the current coexistence of at least three major, competing taxonomic treatments. To help resolve this situation, we sequenced similar to900 bases of mitochondrial DNA of 40 individuals from five of the widely recognized "major" allotaxa. Total sequence diversity (>5%) is high compared to most primate species. Major mitochondrial. clades correspond to recognized allotaxa, with the important exception that haplotypes from yellow and olive baboons form a single, monophyletic clade within which the two allotaxa do not comprise mutually exclusive clusters. The major clades fall unambiguously into the pattern: (chacma (Guinea (hamadryas (yellow + olive)))). This phylogeny does not support taxonomies that oppose hamadryas to all other baboons ("desert" vs. "savanna"), but is compatible with the view that all definable allotaxa should be recognized as coordinates, either as "phylogenetic" species or "biological" subspecies. The close relationship and unsegregated distribution of haplotypes from Kenyan and Tanzanian yellow and olive baboons are unexplained, but may reflect introgression across the documented hybrid zone. The overall phylogeny, when combined with paleontological data, suggests a southern African origin for extant Papio baboons, with all extant lineages sharing a common mitochondrial ancestor at approximately 1.8 Ma. (C) 2004 Wiley-Liss, Inc.