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Jiani Liu,Zheng-Yue Li,Xiaoyan Chen,Heping Huang,Furong Gui 한국응용곤충학회 2014 Journal of Asia-Pacific Entomology Vol.17 No.3
The western flower thrips, Frankliniella occidentalis, is the most economically important agronomic pest withinThysanoptera because it is both a direct pest of horticulture crops and an efficient vector of plant viruses. Sixty-seven polymorphic SSR loci were identified in the contigs (containing redundant ESTs) generated byassembling 13,839 F. occidentalis ESTs from the public sequence database. Nineteen SSR markers exhibited polymorphismamong 860 samples from43 F. occidentalis populations,with alleles per SSR marker ranging fromtwoto eight, the effective number of alleles (Ne) range from 0.73 to 2.64; the observed (Ho) and expected (He) heterozygositiesranged from 0.09 to 0.77 and 0.12 to 0.96, respectively. The PIC values were from 0.24 to 0.73. AMOVA revealed most genetic variation resided within, rather than between, greenhouse and field isolates. The Mantel test showed no significant differences between genetic and geographical distances. We demonstratedthe value of mining the redundant sequences in public sequence databases for the development of polymorphicSSR markers, which can be used for better understanding population variation and spreading of the invasive pestF. occidentalis.