Fig. 2From: Evaluation of the evolutionary genetics and population structure of Culex pipiens pallens in Shandong province, China based on knockdown resistance (kdr) mutations and the mtDNA-COI geneGeographic distribution of Intron haplotypes of kdr allele in the 9 Cx. p. pallens populations. The area of the circle represents the haplotype frequency, different colors indicate different haplotypes. DZ(Dezhou); LC(Liaocheng); HZ(Heze); DY(Dongying); ZB (Zibo); LY(Linyi); YT(Yantai); QD(Qingdao); RZ(Rizhao)Back to article page