title: A multi-genome analysis approach enables tracking of the invasion of a single Russian wheat aphid (Diuraphis noxia) clone throughout the New World.
abstract: This study investigated the population genetics, demographic history and pathway of invasion of the Russian wheat aphid (RWA) from its native range in Central Asia, the Middle East and Europe to South Africa and the Americas. We screened microsatellite markers, mitochondrial DNA and endosymbiont genes in 504 RWA clones from nineteen populations worldwide. Following pathway analyses of microsatellite and endosymbiont data, we postulate that Turkey and Syria were the most likely sources of invasion to Kenya and South Africa, respectively. Furthermore, we found that one clone transferred between South Africa and the Americas was most likely responsible for the New World invasion. Finally, endosymbiont DNA was found to be a high-resolution population genetic marker, extremely useful for studies of invasion over a relatively short evolutionary history time frame. This study has provided valuable insights into the factors that may have facilitated the recent global invasion by this damaging pest.
authors.affiliation: Science & Engineering Faculty, Queensland University of Technology, GPO Box 2434, Brisbane, Qld, 4001, Australia; State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China; Cooperative Research Centre for National Plant Biosecurity, LPO Box 5012, Bruce, ACT, 2617, Australia.
authors.forename: B
authors.initials: B
authors.lastname: Zhang
authors.forename: O
authors.initials: O
authors.lastname: Edwards
authors.forename: L
authors.initials: L
authors.lastname: Kang
authors.forename: S
authors.initials: S
authors.lastname: Fuller
mesh_terms: D000818:Animals; D001042:Aphids / Q000235:genetics*; D020635:Buchnera / Q000235:genetics; D004269:DNA, Bacterial / Q000235:genetics; D004272:DNA, Mitochondrial / Q000235:genetics; D005260:Female; D051456:Gene Flow; D014644:Genetic Variation; D005828:Genetics, Population; D006239:Haplotypes; D058865:Introduced Species; D007630:Kenya; D018895:Microsatellite Repeats; D012426:Russia; D013019:South Africa; D013559:Symbiosis; D013593:Syria; D014908:Triticum; D014421:Turkey
chemical_list: D004269:DNA, Bacterial; D004272:DNA, Mitochondrial
keywords: Diuraphis noxia; endosymbiont; genetic diversity; genetic structure; invasion route; microsatellite; mitochondrial