1. Population structure of the greenhouse whitefly, Trialeurodes vaporariorum (Westwood), an invasive species from the Americas, 60 years after invading China
- Author
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Judith K. Brown, Rui Rui Gao, Hui Peng Pan, Hong Xu Zhou, Rui Ming Zhang, Wen Ping Zhang, Dong Chu, Huai Tong Wu, and Youjun Zhang
- Subjects
China ,Population ,Trialeurodes ,Introduced species ,biological invasion ,exotic introduction ,genetic differentiation ,genetic structure ,Catalysis ,Article ,Inorganic Chemistry ,lcsh:Chemistry ,Hemiptera ,Genetic variation ,Animals ,Cluster Analysis ,Physical and Theoretical Chemistry ,education ,Molecular Biology ,lcsh:QH301-705.5 ,Spectroscopy ,Genetic diversity ,education.field_of_study ,biology ,Ecology ,Organic Chemistry ,Genetic Variation ,Greenhouse whitefly ,General Medicine ,biology.organism_classification ,Computer Science Applications ,Genetics, Population ,Genetic distance ,lcsh:Biology (General) ,lcsh:QD1-999 ,Genetic Loci ,Genetic structure ,Americas ,Introduced Species ,human activities ,Microsatellite Repeats - Abstract
Though the greenhouse whitefly, Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) was introduced into China more than 60 years ago, the genetic diversity and structure of this exotic insect pest and virus vector have not been studied. To investigate the population genetic characteristics of this invasive species and to identify potential invasion routes, the genetic diversity and population structure of 17 collections of T. vaporariorum from nine provinces in China were analyzed using seven microsatellite loci. The results of the analyses indicated that the genetic diversity for the populations examined from the four provinces: Jilin, Ningxia, Guizhou and Qinghai, was lower than the genetic diversity of populations from the five provinces: Yunnan, Shandong, Shanxi, Liaoning, and Gansu. The T. vaporariorum populations analyzed in this study grouped as two distinct genetic clusters based on the analysis using STRUCTURE, whereas, 8 clusters were identified based on the BAPS analysis. Of the 136 genetic distance (Fst) values, 128 (94%) were associated with a significant exact test. However, there was no significant relationship between Fst and geographical distance. These results demonstrate that populations of T. vaporariorum in China exhibit significant genetic differentiation, indicating the likelihood that multiple introductions of T. vaporariorum into China have occurred. Also, the populations collected from the provinces of Jilin, Ningxia, Guizhou and Qinghai appear to represent secondary introductions originating from other Chinese provinces.
- Published
- 2014