Fig. 6

Population structure of Ae. albopictus in the native range using 57,780 SNPs (set LD2). Panel A shows the results of Admixture analyses on 237 samples for K = 5. Each bar represents a mosquito. The country of origin is listed on the bottom, while the population code and the name of the sampling locality are on the top. Each bar color and height represent the probability of the mosquito being assigned to an ancestral group. On the y-axis are the admixture proportions for each individual. Panel B shows a map where the ancestry matrix is interpolated over the entire region from which samples with different shades of the same color reflect different ancestry coefficients. The map was obtained using the R package tess3r. The colored pies at each sampling site reflect the proportion of the clusters found at that site. Plots for the other SNP sets and other algorithms are shown in Additional file 12: File S12, and Additional file 25: Figs. S15 and S16