Skip to main content

Table 1 Distribution of kdr-like alleles T917I in head lice populations from Honduras

From: First evidence of the mutations associated with pyrethroid resistance in head lice (Phthiraptera: Pediculidae) from Honduras

PopulationNo. of head lice analyzed (no. of infested subjects)GenotypeaResistance allele frequency (%)H-Wb (χ2)Fdis
S/SR/SR/R  
San Buenaventura25 (8)025 (100)05025c− 1c
La Hicaca58 (12)5 (8.6)53 (91.4)045.6841.04c− 0.83c
Total83 (20)5 (6.1)78 (93.9)046.9865.2c− 0.887c
  1. aS and R are susceptible and resistant alleles. Between brackets are the percentages of each genotype proportion
  2. bPopulations were tested for the Hardy-Weinberg equilibrium by a chi-square test (χ2 = 3.84, df = 2, P < 0.05)
  3. cValues that are statistically significant at P < 0.05. Significance level indicates rejection of the null hypothesis Fis = 0 at P < 0.05
  4. dFis values > 0 indicate heterozygote deficiency, whereas Fis values < 0 indicate heterozygote excess