Analysis on population genetic diversity of Oedaleus decorus decorus in Xinjiang based on monogene and multi-loci
Oedaleus decorus decorus is one of the most important locust pests in the temperate desert grasslands of Xinjiang.Currently,the genetic diversity and affinities of the Xinjiang populations of this locust are still unclear.In this study,we determined the mitochondrial COⅠ and ND5 genes in 194 individuals from 14 geographic populations of O.de-corus decorus in Xinjiang,compared the genetic diversity and genetic differentiation of this locust by monogene and multi-loci analysis,and explored the possible dispersal pathways of the Xinjiang populations of this locust based on the highly plausible multi-loci.The multi-loci of COⅠ and ND5 in 14 populations of O.decorus decorus showed high genetic diversi-ty(Hd 0.9048-1.0000,Pi 0.0100-0.3415)and high genetic differentiation among populations with insufficient gene exchange(Fst 0.3851,Nm 0.40).Genetic differences among populations originated from within populations(80.03％),and geographical distance may not be the main factor affecting genetic distance among populations.The com-prehensive analysis of the genetic diversity,haplotype network diagram and phylogenetic tree results showed that multi-lo-ci were more plausible than monogene.The higher genetic differentiation of O.decorus decorus populations in Xinjiang may be mainly due to topography and geomorphology,while the lower genetic differentiation of the populations may be af-fected by the northwest monsoon.The early established species of O.decorus decorus populations in Xinjiang may have originated from the Ili area,with one spreading to Bole,Urumqi,and Hami areas via the Tianshan Mountains,and the other spreading from the Tacheng area via the Junggar Basin to Fumun County.
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NSTL
万方数据
