title: Genetic differentiation of Culex pipiens (Diptera: Culicidae) in China.
abstract: The population genetic structures of Culex pipiens Linnaeus were evaluated in China over a 2000 km transect that encompasses the two subspecies, C. p. pallens and C. p. quinquefasciatus. Four polymorphic allozyme loci were investigated in 1376 mosquitoes sampled from 20 populations across four provinces. These loci were not statistically dependent with no apparent heterozygote deficit or excess. On a regional scale (intra-province), a low (Fst=0.007-0.016) and significant genetic differentiation was found, with no clear geographical pattern. On a wider scale (inter-province), the genetic differentiation was higher (Fst=0.059), and an isolation by distance emerged. The results are compared with previous population genetic surveys of this mosquito species in different geographic areas over the world. The overall pattern suggests that Culex pipiens requires considerable distance (500-1000 km) to show isolation by distance, irrespective of the subspecies (C. p. pipiens, C. p. quinquefasciatus and C. p. pallens) or the geographic location.
authors.affiliation: State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Graduate School, Chinese Academy of Sciences, Beijing 100080, China.
authors.forename: F
authors.initials: F
authors.lastname: Cui
authors.forename: C-L
authors.initials: CL
authors.lastname: Qiao
authors.forename: B-C
authors.initials: BC
authors.lastname: Shen
authors.forename: M
authors.initials: M
authors.lastname: Marquine
authors.forename: M
authors.initials: M
authors.lastname: Weill
authors.forename: M
authors.initials: M
authors.lastname: Raymond
mesh_terms: D000818:Animals; D024442:Aspartate Aminotransferase, Mitochondrial / Q000235:genetics; D002681:China; D003465:Culex / Q000201:enzymology / Q000235:genetics*; D005843:Geography; D005956:Glucose-6-Phosphate Isomerase / Q000235:genetics; D006593:Hexokinase / Q000235:genetics; D010733:Phosphoglucomutase / Q000235:genetics; D011110:Polymorphism, Genetic
chemical_list: D024442:Aspartate Aminotransferase, Mitochondrial; D006593:Hexokinase; D005956:Glucose-6-Phosphate Isomerase; D010733:Phosphoglucomutase