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学科主题: Biochemistry & Molecular Biology; Ecology; Evolutionary Biology
题名: The youngest split in sympatric schizothoracine fish (Cyprinidae) is shaped by ecological adaptations in a Tibetan Plateau glacier lake
作者: Zhao, Kai1; Duan, Zi Yuan2, 3; Peng, Zuo Gang2; Guo, Song Chang1; Li, Jun Bing2; He, Shun Ping2; Zhao, Xin Quan1
通讯作者: Zhao, XQ, Chinese Acad Sci, NW Plateau Inst Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Qinghai, Peoples R China
关键词: mitochondrial control region and cytochrome b ; phylogeography ; Pleistocene glaciations ; schizothoracine fish ; Tibetan Plateau
刊名: MOLECULAR ECOLOGY
发表日期: 2009-09-01
DOI: 10.1111/j.1365-294X.2009.04274.x
卷: 18, 期:17, 页:3616-3628
收录类别: SCI
文章类型: Article
部门归属: [Zhao, Kai; Guo, Song Chang; Zhao, Xin Quan] Chinese Acad Sci, NW Plateau Inst Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Qinghai, Peoples R China; [Duan, Zi Yuan; Peng, Zuo Gang; Li, Jun Bing; He, Shun Ping] Chinese Acad Sci, Inst Hydrobiol, Lab Fish Phylogenet & Biogeog, Wuhan 430072, Hubei, Peoples R China; [Duan, Zi Yuan] Chinese Acad Sci, Inst Genet & Dev Biol, Beijing 100101, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Key Innovation Plan [KSCX2-SW-106]; National Basic Research Project in China [2005cb422005]; National Natural Science Foundation of China [30600062]
类目[WOS]: Biochemistry & Molecular Biology ; Ecology ; Evolutionary Biology
研究领域[WOS]: Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology
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.
英文摘要: 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.
关键词[WOS]: CICHLID FISH ; CRATER LAKE ; POPULATION-STRUCTURE ; SEQUENCE ALIGNMENT ; SPECIATION ; PHYLOGEOGRAPHY ; DIVERGENCE ; MODELS ; PHYLOGENETICS ; EVOLUTIONARY
语种: 英语
WOS记录号: WOS:000269189900006
ISSN号: 0962-1083
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/7608
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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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

Recommended Citation:
Zhao, Kai; Duan, Zi Yuan; Peng, Zuo Gang; Guo, Song Chang; Li, Jun Bing; He, Shun Ping; Zhao, Xin Quan.The youngest split in sympatric schizothoracine fish (Cyprinidae) is shaped by ecological adaptations in a Tibetan Plateau glacier lake,MOLECULAR ECOLOGY,2009,18(17):3616-3628
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