Journal
MOLECULAR ECOLOGY
Volume 23, Issue 8, Pages 1940-1951Publisher
WILEY
DOI: 10.1111/mec.12714
Keywords
mitochondrial; Diuraphis noxia; microsatellite; genetic structure; endosymbiont; invasion route; genetic diversity
Funding
- Australian Government's Cooperative Research Centre for National Plant Biosecurity
- CSIRO
- Queensland University of Technology
- Chinese Academy of Sciences
- National Basic Research Program of China [2012CB114105]
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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.
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