Table 4.

Genotypes detected for F1534C mutation in Aedes aegypti populations for the 2015 and 2017 samples respectively

Population	Total no. of mosquitoes	F1534C genotype			Resistant C allele frequency	Chi-square	FIS
		F/F	F/C	C/C
2015 collection
Colombo	39	30	6	3	0.175	0.002	0.480
Galle	21	19	2	0	0.048	0.818	− 0.05
Trincomalee	28	25	2	1	0.071	0.014	0.461
Puttalum	30	26	2	2	0.100	0.001	0.629
Hambanthota	21	18	3	0	0.071	0.000	− 0.076
2017 collection
Colombo	48	1	17	30	0.802	0.423	− 0.115
Galle	47	7	17	23	0.656	0.205	0.164
Trincomalee	48	19	15	14	0.427	0.004	0.352
Puttalum	47	42	5	0	0.052	0.622	− 0.103
Hambanthota	47	23	12	12	0.375	0.000	0.448
New Orleans	48	48	0	0	0.000	0.000	0.000
Sri Lanka_Lab	48	30	14	4	0.229	0.000	0.174