Insecticide resistance to organophosphates in Culex pipiens complex from Lebanon

Parasites & Vectors

Table 2 Frequency of ace-1 alleles based on diagnostic PCR analysis

Location	N	[SS]	[RS]	F_is	p-value
Beirut	76	0.763 (58)	0.236 (18)	−0.13	0.32
Mount Lebanon	182	0.73 (133)	0.27 (49)	−0.15	0.02
South Lebanon	159	0.742 (118)	0.258 (41)	−0.14	0.05
North Lebanon	120	0.80 (96)	0.20 (24)	−0.11	0.28
Beqaa	107	0.822 (88)	0.178 (19)	−0.09	0.41
Total number	644	493	151	-	-

Indicated are the frequencies for each genotype together with the corresponding number of individuals in brackets. N is the number of mosquitoes analyzed. SS, susceptible mosquitoes; RS, mosquitoes heterozygous for G119S; RR, mosquitoes homozygous for G119S; V, mosquitoes containing the F290V mutation. The F_is value indicates whether there is an excess (negative value) or a deficit (positive value) of heterozygotes. The p-value (Genepop [30], Fisher’s exact test) is also indicated. Significant values are in bold.

ISSN: 1756-3305