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题名: Genetic footprint of population fragmentation and contemporary collapse in a freshwater cetacean
作者: Chen, Minmin1, 2; Fontaine, Michael C.3; Ben Chehida, Yacine3; Zheng, Jinsong1; Labbe, Frederic3, 4, 5; Mei, Zhigang1; Hao, Yujiang1; Wang, Kexiong1; Wu, Min1; Zhao, Qingzhong1; Wang, Ding1
刊名: SCIENTIFIC REPORTS
发表日期: 2017-10-31
DOI: 10.1038/s41598-017-14812-z
卷: 7
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
英文摘要: Understanding demographic trends and patterns of gene flow in an endangered species is crucial for devising conservation strategies. Here, we examined the extent of population structure and recent evolution of the critically endangered Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis). By analysing genetic variation at the mitochondrial and nuclear microsatellite loci for 148 individuals, we identified three populations along the Yangtze River, each one connected to a group of admixed ancestry. Each population displayed extremely low genetic diversity, consistent with extremely small effective size (<= 92 individuals). Habitat degradation and distribution gaps correlated with highly asymmetric gene-flow that was inefficient in maintaining connectivity between populations. Genetic inferences of historical demography revealed that the populations in the Yangtze descended from a small number of founders colonizing the river from the sea during the last Ice Age. The colonization was followed by a rapid population split during the last millennium predating the Chinese Modern Economy Development. However, genetic diversity showed a clear footprint of population contraction over the last 50 years leaving only similar to 2 % of the pre-collapsed size, consistent with the population collapses reported from field studies. This genetic perspective
关键词[WOS]: YANGTZE FINLESS PORPOISE ; APPROXIMATE BAYESIAN COMPUTATION ; NEOPHOCAENA-ASIAEORIENTALIS-ASIAEORIENTALIS ; MULTILOCUS GENOTYPE DATA ; MICROSATELLITE LOCI ; LINKAGE DISEQUILIBRIUM ; MULTIVARIATE-ANALYSIS ; ENVIRONMENTAL-CHANGE ; PHOCOENA-PHOCOENA ; DNA POLYMORPHISM
语种: 英语
项目资助者: National Key Programme of Research and Development from Ministry of Science and Technology of China(2016YFC0503200) ; National Natural Science Foundation of China(30730018 ; Special Fund for Agro-scientific Research in the Public Interest(201203086) ; Special Conservation Fund for the Yangtze finless porpoise from the Ministry of Agriculture of China ; Major Project of Natural Science Research in Anhui Province(KJ2016A863) ; 31430080)
WOS记录号: WOS:000414231000050
ISSN号: 2045-2322
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/38882
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, Key Lab Aquat Biodivers & Conservat, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2.Anqing Normal Univ, Coll Life Sci, Res Ctr Aquat Organism Conservat & Water Ecosyst, Anqing 246133, Peoples R China
3.Univ Groningen, Groningen Inst Evolutionary Life Sci GELIFES, NL-11103 CC Groningen, Netherlands
4.Univ Notre Dame, Eck Inst Global Hlth, Notre Dame, IN 46556 USA
5.Univ Notre Dame, Dept Biol Sci, Galvin Life Sci Ctr, Notre Dame, IN 46556 USA
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