Genetic analyses reveal regional structure and demographic expansion of the predominant tea pest Empoasca onukii (Hemiptera: Cicadellidae) in China
文献类型： 外文期刊
作者： Li, Jinyu 1 ; Shi, Longqing 1 ; Vasseur, Liette 1 ; Zhao, Qian 1 ; Chen, Jie 1 ; You, Minsheng 1 ; You, Shijun 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Inst Appl Ecol, State Key Lab Ecol Pest Control Fujian & Taiwan C, Fuzhou 350002, Peoples R China
2.Fujian Acad Agr Sci, Tea Res Inst, Fuzhou, Peoples R China
3.Fujian Acad Agr Sci, Inst Rice, Fuzhou, Peoples R China
4.Minist Educ, Joint Int Res Lab Ecol Pest Control, Fuzhou, Peoples R China
5.Fujian Agr & Forestry Univ, Ministerial & Prov Joint Innovat Ctr Safety Prod, Fuzhou, Peoples R China
6.Brock Univ, Dept Biol Sci, St Catharines, ON, Canada
7.Minist Agr, Key Lab Integrated Pest Management Fujian Taiwan, Fuzhou, Peoples R China
关键词： tea green leafhopper; gene flow; demographic expansion; genetic structure; management
期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.462； 五年影响因子：4.688 ）
ISSN： 1526-498X
年卷期： 2022 年 78 卷 7 期
页码：
收录情况： SCI
摘要： BACKGROUND The tea green leafhopper, Empoasca onukii Matsuda, is the most destructive insect pest of tea plantations in East Asia. Despite its economic importance and previous studies on this species, it remains unclear as to how this small-sized pest can have such wide range. RESULTS By sequencing three mitochondrial genes and 17 microsatellite loci, we revealed the regional structure and demographic expansion of 59 E. onukii populations in China. Bayesian analysis of population genetic structure (BAPS) on microsatellites identified four genetic groups with spatial discontinuities, while analysis on mitochondrial genes inferred five nested and differentiated clusters. Both the Mantel test and the generalized linear model indicated a significant pattern of isolation by geographic distance in E. onukii populations. Based on the approximate Bayesian computation approach, E. onukii was found to have originated from southwestern China and expanded northward and eastward. While MIGRATE-N and Bayesian stochastic search variable selection (BSSVS) procedure in BEAST confirmed the possible eastward and northward dispersal from Yunnan, they also detected more gene flow from the derived populations in central and southeastern China. CONCLUSION Our results suggest that the current distribution and structure of E. onukii is complicatedly influenced by human activities of cultivation, wide dissemination of tea in ancient China as well as recent transportation of tea seedlings for establishing new tea plantations. Insights into genetic differentiation and demographic expansion patterns from this study provide an important basis for the development of area-wide management of the E. onukii populations. (c) 2022 Society of Chemical Industry.
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