TABLE III. Frequency of the F1534C knockdown resistance mutation in the populations of Madeira, Brazil and Venezuela analysed in this study.
| Population | Mosquitoes analysed (n) | F/F a (n) | F/C b (n) | C/C c (n) | C d (%) |
|---|---|---|---|---|---|
| Madeira | 65 | 0 | 2 | 63 | 0.98 |
| Brazil | 30 | 17 | 12 | 1 | 0.23 |
| Venezuela | 30 | 0 | 0 | 30 | 1 |
a : number of homozygous susceptible individuals; b : number of heterozygous individuals; c : number of homozygous resistant individuals; d : resistance allele frequency in the population. Of the total 125 individuals genotyped, four were confirmed by sequencing. C: cysteine; F: phenylalanine.