High Spatial Genetic Structure and Genetic Diversity in Chinese Populations of Sitobion miscanthi (Hemiptera: Aphididae).
The wheat aphid, Sitobion miscanthi Takahashi, a serious wheat pest, was previously considered to be highly migratory and anholocyclic in China. We recorded 69 alleles and 346 multilocus genotypes among 708 aphid individuals from 12 populations in China using 5 microsatellite loci. This genotypic diversity indicates that at least some holocyclic lineages exist. Bayesian clustering analysis revealed that there are two differentiated genetic groups of S. misanthi, one northern and one southern, in China. Principal coordinates analysis of population genetic distance, pairwise F(ST)'s, and network analysis of individual minimum spanning distance also supported the division. Low levels of migration were detected between the northern and southern sampling sites, but the high genetic differentiation does not support the hypothesis S. miscanthi overwinters in the south and migrates to the north in the spring annually.
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, 430070 Wuhan, People's Republic of China (ymwang@mail.hzau.edu.cn; guoanzh@mail.hzau.edu.cn), ymwang@mail.hzau.edu.cn.
Yongmo
Y
Wang
School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia (j.hereward@uq.edu.au).
James P
JP
Hereward
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, 430070 Wuhan, People's Republic of China (ymwang@mail.hzau.edu.cn; guoanzh@mail.hzau.edu.cn).
Guoan
G
Zhang
D063147:Animal Distribution; D025041:Animal Migration; D000818:Animals; D001042:Aphids / Q000235:genetics / Q000502:physiology*; D002681:China; D016000:Cluster Analysis; D014644:Genetic Variation; D005838:Genotype; D010312:Parthenogenesis; D012621:Seasons
Sitobion miscanthi; anholocyclic; aphid; microsatellite; population structure