The youngest split in sympatric schizothoracine fish (Cyprinidae) is shaped by ecological adaptations in a Tibetan Plateau glacier lake

NWIPB OpenIR

	The youngest split in sympatric schizothoracine fish (Cyprinidae) is shaped by ecological adaptations in a Tibetan Plateau glacier lake
	Zhao, Kai 1; Duan, Zi Yuan 2,3; Peng, Zuo Gang 2; Guo, Song Chang 1; Li, Jun Bing 2; He, Shun Ping 2; Zhao, Xin Quan 1
	2009-09-01
发表期刊	MOLECULAR ECOLOGY
ISSN	0962-1083
卷号	18 期号:17 页码:3616-3628
文章类型	Article
摘要	Although new empirical evidence shows that sympatric speciation has occurred in some species, there are few indisputable model organisms for this process of speciation. The two subspecies (Gymnocypris eckloni eckloni and G. e. scoliostomus) of the schizothoracine Gymnocypris fish species complex from a small glacier lake in the Tibetan Plateau, Lake Sunmcuo, fit several of the key characteristics of the sympatric speciation model. We used combined mitochondrial control region sequences and the cytochrome b gene (1894 bp) to address the phylogenetics and population genetics of 232 specimens of G. e. eckloni and G. e. scoliostomus, as well as all of its closely related sister species. We found that: (i) a total of four old lineages were uncovered in the widespread G. e. eckloni, of which only one was shown to be shared with all G. e. scoliostomus individuals and (ii) the new subspecies (G. e. scoliostomus) evolved in Lake Sunmcuo from the ancestral G. e. eckloni population within approximately 0.057 Ma. These two taxa of the species complex are morphologically distinct, and reproductive isolation is further suggested. Ecological disruptive selection based on morphological traits (e.g. mouth cleft characters) and food utilization may be a mechanism of incipient speciation of two sympatric populations within Lake Sunmcuo. This study provides the first genetic evidence for sympatric speciation in the schizothoracine fish.; Although new empirical evidence shows that sympatric speciation has occurred in some species, there are few indisputable model organisms for this process of speciation. The two subspecies (Gymnocypris eckloni eckloni and G. e. scoliostomus) of the schizothoracine Gymnocypris fish species complex from a small glacier lake in the Tibetan Plateau, Lake Sunmcuo, fit several of the key characteristics of the sympatric speciation model. We used combined mitochondrial control region sequences and the cytochrome b gene (1894 bp) to address the phylogenetics and population genetics of 232 specimens of G. e. eckloni and G. e. scoliostomus, as well as all of its closely related sister species. We found that: (i) a total of four old lineages were uncovered in the widespread G. e. eckloni, of which only one was shown to be shared with all G. e. scoliostomus individuals and (ii) the new subspecies (G. e. scoliostomus) evolved in Lake Sunmcuo from the ancestral G. e. eckloni population within approximately 0.057 Ma. These two taxa of the species complex are morphologically distinct, and reproductive isolation is further suggested. Ecological disruptive selection based on morphological traits (e.g. mouth cleft characters) and food utilization may be a mechanism of incipient speciation of two sympatric populations within Lake Sunmcuo. This study provides the first genetic evidence for sympatric speciation in the schizothoracine fish.
关键词	Mitochondrial Control Region And Cytochrome b Phylogeography Pleistocene Glaciations Schizothoracine Fish Tibetan Plateau
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	CICHLID FISH ; CRATER LAKE ; POPULATION-STRUCTURE ; SEQUENCE ALIGNMENT ; SPECIATION ; PHYLOGEOGRAPHY ; DIVERGENCE ; MODELS ; PHYLOGENETICS ; EVOLUTIONARY
收录类别	SCI
语种	英语
WOS研究方向	Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Biochemistry & Molecular Biology ; Ecology ; Evolutionary Biology
WOS记录号	WOS:000269189900006
引用统计	被引频次：46[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/1830
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, NW Plateau Inst Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Qinghai, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, Lab Fish Phylogenet & Biogeog, Wuhan 430072, Hubei, Peoples R China 3.Chinese Acad Sci, Inst Genet & Dev Biol, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Kai,Duan, Zi Yuan,Peng, Zuo Gang,et al. The youngest split in sympatric schizothoracine fish (Cyprinidae) is shaped by ecological adaptations in a Tibetan Plateau glacier lake[J]. MOLECULAR ECOLOGY,2009,18(17):3616-3628.
APA	Zhao, Kai.,Duan, Zi Yuan.,Peng, Zuo Gang.,Guo, Song Chang.,Li, Jun Bing.,...&Zhao, Xin Quan.(2009).The youngest split in sympatric schizothoracine fish (Cyprinidae) is shaped by ecological adaptations in a Tibetan Plateau glacier lake.MOLECULAR ECOLOGY,18(17),3616-3628.
MLA	Zhao, Kai,et al."The youngest split in sympatric schizothoracine fish (Cyprinidae) is shaped by ecological adaptations in a Tibetan Plateau glacier lake".MOLECULAR ECOLOGY 18.17(2009):3616-3628.