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Origin of resistance to pyrethroids in the redlegged earth mite (Halotydeus destructor) in Australia: repeated local evolution and migration

文献类型： 外文期刊

作者： Yang, Qiong 1 ; Umina, Paul A. 1 ; Rasic, Gordana 3 ; Bell, Nicholas 1 ; Fang, Jichao 4 ; Lord, Alan 5 ; Hoffmann, Ary 1 ;

作者机构： 1.Univ Melbourne, Pest & Environm Adaptat Res Grp, Sch Biosci, Parkville, Vic 3010, Australia

2.Cesar, Sustainable Agr, Parkville, Vic, Australia

3.QIMR Berghofer Med Res Inst, Mosquito Control Lab, Herston, Qld, Australia

4.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing, Jiangsu, Peoples R China

5.Govt Western Australia, Dept Primary Ind & Reg Dev, South Perth, WA, Australia

关键词： resistance; Halotydeus destructor; evolution; population genetic structure; SNP

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.845； 五年影响因子：4.674 ）

ISSN： 1526-498X

年卷期：

页码：

收录情况： SCI

摘要： BACKGROUND Halotydeus destructor is a major pest of crops and pastures across southern parts of Australia. This invasive mite has been chemically controlled for over 50 years, but resistance to synthetic pyrethroids and organophosphates is developing. Understanding processes behind the emerging resistance is important for effective management efforts. We undertook a ddRAD pool-sequencing approach to analyse genome-wide single nucleotide polymorphism variation in H. destructor population samples at two scales: local resistance across a set of fields, and regional resistance across their Australian range, along with toxicology bioassays to screen for pyrethroid resistance. RESULTS Spatial patterns of genomic variation and resistance at a local scale indicated that genetic similarity among samples was more closely correlated with distance along roads and fence-lines than with straight-line geographic distance. This pattern was particularly strong in resistant samples, which were also more related than susceptible samples, suggesting local spread of resistance within an area after it emerged. By contrast, regional data suggest resistance has emerged repeatedly within parts of Australia. Our de novo annotation of the H. destructor draft genome sequence and Bayesian analysis identified several candidate loci strongly associated with population-level resistance to pyrethroids, located in genomic regions that code for transmembrane transport and signalling proteins that have previously been linked to insecticide resistance in other arthropods. CONCLUSION Our findings highlight multiple independent evolutionary events leading to resistance in H. destructor, and demonstrate the utility and cost-effectiveness of a cross-population, genome-wide association study to reveal processes underlying adaptive evolution in a non-model invasive species. (c) 2019 Society of Chemical Industry

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