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首页> 外文期刊>Journal of Economic Entomology >Development of Microsatellites for Population Genetic Analyses of the Granulate Ambrosia Beetle (Coleoptera: Curculionidae)
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Development of Microsatellites for Population Genetic Analyses of the Granulate Ambrosia Beetle (Coleoptera: Curculionidae)

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Limited male dispersal and local mating in ambrosia beetles are expected to result in extreme inbreeding and highly structured populations. In this study, we developed microsatellite markers for the granulate ambrosia beetle, Xylosandrus crassiusculus (Motschulsky), for use in future studies into population and family structure of this invasive pest species. We employed de novo next-generation sequencing to generate whole genome shotgun sequences for the characterization of microsatellite loci. Approximately 6 of the 84,024 contigs generated from Hi-Seq Illumina 2x250bp sequencing contained microsatellites with at least four repeats of di-,tri-, tetra-, penta-, and hexamers. Primers were synthesized for 40 microsatellite loci with trimer repeat units. Twenty-four primer pairs yielded consistent PCR products of unique loci and were validated for population genetic application using three sample groups each containing 20 X. crassiusculus individuals from Mississippi. Thirteen loci were found to be polymorphic with up to five alleles per population. The two beetle sample groups from Pearl River County (Poplarville and McNeill) belonged genetically to the same population.

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