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题名: Ongoing Speciation in the Tibetan Plateau Gymnocypris Species Complex
作者: Zhang, Renyi1, 2; Peng, Zuogang3, 4, 5; Li, Guogang1, 2; Zhang, Cunfang1; Tang, Yongtao1; Gan, Xiaoni3; He, Shunping3; Zhao, Kai1
通讯作者: Zhao, K (reprint author), Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining, Qinghai, Peoples R China.
关键词: WHITEFISH COREGONUS-LAVARETUS ; LOCAL ADAPTATION ; EUROPEAN POPULATIONS ; PARALLEL EVOLUTION ; SEQUENCE ALIGNMENT ; LAKE TANGANYIKA ; POISON FROGS ; CYPRINIDAE ; TELEOSTEI ; BIOGEOGRAPHY
刊名: PLOS ONE
发表日期: 2013-08-15
DOI: 10.1371/journal.pone.0071331
卷: 8, 期:8, 页:e71331
收录类别: SCI
文章类型: Article
部门归属: [Zhang, Renyi ; Li, Guogang ; Zhang, Cunfang ; Tang, Yongtao ; Zhao, Kai] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining, Qinghai, Peoples R China ; [Zhang, Renyi ; Li, Guogang] Univ Chinese Acad Sci, Beijing, Peoples R China ; [Peng, Zuogang ; Gan, Xiaoni ; He, Shunping] Chinese Acad Sci, Inst Hydrobiol, Lab Fish Phylogenet & Biogeog, Wuhan, Hubei, Peoples R China ; [Peng, Zuogang] Minist Educ, Key Lab Freshwater Fish Reprod & Dev, Chongqing, Peoples R China ; [Peng, Zuogang] Southwest Univ Sch Life Sci, Chongqing, Peoples R China
WOS标题词: Science & Technology
资助者: Chinese Academy of Sciences [KSCX2-YW-N-101, KSCX2-1W-N-004]; National Natural Science Foundation of China [30970341, 31172070, 31071903]
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
摘要: Local adaptation towards divergent ecological conditions often results in genetic differentiation and adaptive phenotypic divergence. To illuminate the ecological distinctiveness of the schizothoracine fish, we studied a Gymnocypris species complex consisting of three morphs distributed across four bodies of water (the Yellow River, Lake Qinghai, the Ganzi River and Lake Keluke) in the Northeast Tibetan Plateau. We used a combination of mitochondrial (16S rRNA and Cyt b) and nuclear (RAG-2) genetic sequences to investigate the phylogeography of these morphs based on a sample of 277 specimens. Analysis of gill rakers allowed for mapping of phenotypic trajectories along the phylogeny. The phylogenetic and morphological analyses showed that the three sparsely rakered morphs were present at two extremes of the phylogenetic tree: the Yellow River morphs were located at the basal phylogenetic split, and the Lake Keluke and Ganzi River morphs at the peak, with the densely rakered Lake Qinghai morphs located between these two extremes. Age estimation further indicated that the sparsely rakered morphs constituted the oldest and youngest lineages, whereas the densely rakered morph was assigned to an intermediate-age lineage. These results are most compatible with the process of evolutionary convergence or reversal. Disruptive natural selection due to divergent habitats and dietary preferences is likely the driving force behind the formation of new morphs, and the similarities between their phenotypes may be attributable to the similarities between their forms of niche tracking associated with food acquisition. This study provides the first genetic evidence for the occurrence of convergence or reversal in the schizothoracine fish of the Tibetan Plateau at small temporal scales.
英文摘要: Local adaptation towards divergent ecological conditions often results in genetic differentiation and adaptive phenotypic divergence. To illuminate the ecological distinctiveness of the schizothoracine fish, we studied a Gymnocypris species complex consisting of three morphs distributed across four bodies of water (the Yellow River, Lake Qinghai, the Ganzi River and Lake Keluke) in the Northeast Tibetan Plateau. We used a combination of mitochondrial (16S rRNA and Cyt b) and nuclear (RAG-2) genetic sequences to investigate the phylogeography of these morphs based on a sample of 277 specimens. Analysis of gill rakers allowed for mapping of phenotypic trajectories along the phylogeny. The phylogenetic and morphological analyses showed that the three sparsely rakered morphs were present at two extremes of the phylogenetic tree: the Yellow River morphs were located at the basal phylogenetic split, and the Lake Keluke and Ganzi River morphs at the peak, with the densely rakered Lake Qinghai morphs located between these two extremes. Age estimation further indicated that the sparsely rakered morphs constituted the oldest and youngest lineages, whereas the densely rakered morph was assigned to an intermediate-age lineage. These results are most compatible with the process of evolutionary convergence or reversal. Disruptive natural selection due to divergent habitats and dietary preferences is likely the driving force behind the formation of new morphs, and the similarities between their phenotypes may be attributable to the similarities between their forms of niche tracking associated with food acquisition. This study provides the first genetic evidence for the occurrence of convergence or reversal in the schizothoracine fish of the Tibetan Plateau at small temporal scales.
关键词[WOS]: WHITEFISH COREGONUS-LAVARETUS ; LOCAL ADAPTATION ; EUROPEAN POPULATIONS ; PARALLEL EVOLUTION ; SEQUENCE ALIGNMENT ; LAKE TANGANYIKA ; POISON FROGS ; CYPRINIDAE ; TELEOSTEI ; BIOGEOGRAPHY
语种: 英语
WOS记录号: WOS:000323378000042
ISSN号: 1932-6203
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19532
Appears in Collections:水生生物多样性与资源保护研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining, Qinghai, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, Lab Fish Phylogenet & Biogeog, Wuhan, Hubei, Peoples R China
4.Minist Educ, Key Lab Freshwater Fish Reprod & Dev, Chongqing, Peoples R China
5.Southwest Univ Sch Life Sci, Chongqing, Peoples R China

Recommended Citation:
Zhang, Renyi; Peng, Zuogang; Li, Guogang; Zhang, Cunfang; Tang, Yongtao; Gan, Xiaoni; He, Shunping; Zhao, Kai.Ongoing Speciation in the Tibetan Plateau Gymnocypris Species Complex,PLOS ONE,2013,8(8):e71331
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