Variation in mitochondrial DNA and phylogeny of six species of pikas (Ochotona)

NWIPB OpenIR

	Variation in mitochondrial DNA and phylogeny of six species of pikas (Ochotona)
	Yu Ning ; Zheng Changlin ; Shi Liming
	1997
发表期刊	JOURNAL OF MAMMALOGY ; Yu N, Zheng CL, Shi LM.Variation in mitochondrial DNA and phylogeny of six species of pikas (Ochotona). JOURNAL OF MAMMALOGY,1997,78(2):387-396
摘要	Phylogenetic relationships of six species of Ochotona were investigated using mitochondrial DNA (mtDNA) restriction-site analysis. The phylogenetic tree constructed using PAUP was based on 62 phylogenetically informative sites with O. erythrotis designated as an outgroup. Two clades were evident. One contained O. curzoniae, O. huangensis, and O. thibetana. in the second, O. daurica was a sister taxon of O. cansus. The five species appear to come from different maternal lineages. The branching structure of the tree and sequence divergence confirm that huangensis and cansus are distinct species, and that mol-osa is a synonym of O. cansus rather than O. thibetana. Divergence time, estimated from genetic distances, indicates that the ancestors of the two maternal lineages diverged ca. 6.5 x 10(6) years ago. O. curzoniae diverged from O. huangensis, and O. daurica diverged from O. cansus, at about the same time (ca. 3.4 x 10(6) years ago). These data suggest a period of rapid radiation of the genus Ochotona in China, perhaps during the late Pliocene. These calculations correspond roughly to tectonic events and environmental changes in China throughout this period, and appear to be substantiated by the fossil record.; Phylogenetic relationships of six species of Ochotona were investigated using mitochondrial DNA (mtDNA) restriction-site analysis. The phylogenetic tree constructed using PAUP was based on 62 phylogenetically informative sites with O. erythrotis designated as an outgroup. Two clades were evident. One contained O. curzoniae, O. huangensis, and O. thibetana. in the second, O. daurica was a sister taxon of O. cansus. The five species appear to come from different maternal lineages. The branching structure of the tree and sequence divergence confirm that huangensis and cansus are distinct species, and that mol-osa is a synonym of O. cansus rather than O. thibetana. Divergence time, estimated from genetic distances, indicates that the ancestors of the two maternal lineages diverged ca. 6.5 x 10(6) years ago. O. curzoniae diverged from O. huangensis, and O. daurica diverged from O. cansus, at about the same time (ca. 3.4 x 10(6) years ago). These data suggest a period of rapid radiation of the genus Ochotona in China, perhaps during the late Pliocene. These calculations correspond roughly to tectonic events and environmental changes in China throughout this period, and appear to be substantiated by the fossil record.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/20371
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Yu Ning,Zheng Changlin,Shi Liming. Variation in mitochondrial DNA and phylogeny of six species of pikas (Ochotona)[J]. JOURNAL OF MAMMALOGY, Yu N, Zheng CL, Shi LM.Variation in mitochondrial DNA and phylogeny of six species of pikas (Ochotona). JOURNAL OF MAMMALOGY,1997,78(2):387-396,1997.
APA	Yu Ning,Zheng Changlin,&Shi Liming.(1997).Variation in mitochondrial DNA and phylogeny of six species of pikas (Ochotona).JOURNAL OF MAMMALOGY.
MLA	Yu Ning,et al."Variation in mitochondrial DNA and phylogeny of six species of pikas (Ochotona)".JOURNAL OF MAMMALOGY (1997).