TABLE II. Frequency of the V1016I knockdown resistance mutation in the populations of Madeira, Brazil and Venezuela analysed in this study.
Population | Mosquitoes analysed (n) | V/V a (n) | V/I b (n) | I/I c (n) | I d (%) |
---|---|---|---|---|---|
Madeira | 69 | 59 | 9 | 1 | 0.08 |
Brazil | 32 | 27 | 4 | 1 | 0.09 |
Venezuela | 30 | 16 | 14 | 0 | 0.23 |
a : number of individuals homozygous for the susceptible-associated allele; b : number of heterozygous individuals; c : number of individuals homozygous for the resistant-associated allele; d : allele frequency for the resistant-associated allele. Of the total 131 individuals genotyped, 35 were confirmed by sequencing. I: isoleucine; V: valine.