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

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

Population	No. of head lice analyzed (no. of infested subjects)	Genotype^a			Resistance allele frequency (%)	H-W^b (χ²)	F^d_is
Population	No. of head lice analyzed (no. of infested subjects)	S/S	R/S	R/R	Resistance allele frequency (%)
San Buenaventura	25 (8)	0	25 (100)	0	50	25^c	− 1^c
La Hicaca	58 (12)	5 (8.6)	53 (91.4)	0	45.68	41.04^c	− 0.83^c
Total	83 (20)	5 (6.1)	78 (93.9)	0	46.98	65.2^c	− 0.887^c

^aS and R are susceptible and resistant alleles. Between brackets are the percentages of each genotype proportion
^bPopulations were tested for the Hardy-Weinberg equilibrium by a chi-square test (χ² = 3.84, df = 2, P < 0.05)
^cValues that are statistically significant at P < 0.05. Significance level indicates rejection of the null hypothesis F_is = 0 at P < 0.05
^dF_is values > 0 indicate heterozygote deficiency, whereas F_is values < 0 indicate heterozygote excess

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