Table 5. Susceptibility against permethrin and permethrin/PBO of F1 female adults produced by individual blood-fed females collected in houses in Gembe East, Mbita, and western islands, Kenya by topical application.

Species	Location1)	Permethrin (P)				Permethrin+PBO (1.25 µg) (B)				% RR4)	RatioP/B
		LD50 (µg/female)	95% C.L.	Slope	N	LD50(µg/female)	95% C.L.	Slope	N
An. arabiensis	Nyandago	0.017	(0.0097–0.026)	3.0	51	0.00039	-	1.2	30	0	44
	Nyaroya2)	0.092	(0.063–0.16)	2.0	99	0.0042	(0.0023–0.012)	2.3	90	0	22
	Nyaroya	0.023	(0.060–0.045)	1.3	67	0.00059	(0.00027–0.00094)	1.8	75	0	39
	Alero/Alara	0.024	(0.0063–0.046)	2.1	36	0.00042	-	1.1	27	0	57
	Akuot	0.011	(0.00041–0.017)	2.3	30	0.00032	(0.000066–0.00075)	1.1	28	0	34
	Mfangano	0.020	-	2.8	35	0.00029	-	1.7	38	0	69
An. gambiae s.s.	ICIPE3)	0.0030	(0.0023–0.0035)	2.5	182	0.00062	(0.00024–0.00097)	1.1	151	0	4.8
	Ngodhe	0.036	(0.022–0.057)	1.9	66	0.0047	(0.0026–0.0088)	1.4	80	87.6	7.7
	Takawiri	0.057	(0.015–0.91)	0.89	36	0.015	(0.0074–0.023)	4.3	41	92.5	3.8
	Mfangano	0.15	-	1.0	54	0.020	-	3.8	62	70.4	7.5
	Kibuogi	0.078–0.16	-	-	36	0.044	(0.012–0.094)	2.4	40	100	1.8–3.6
An. funestus s.s.	Nyandago	0.018	-	3.4	31	0.00031	-	2.3	17	0	58
	Nyaroya	0.012	(0.0081–0.021)	3.9	33	0.00051	-	2.3	26	0	24

¹⁾Location where parental females were collected,

²⁾Collected as larvae,

³⁾Laboratory colony reared in ICIPE since the collection at Lwanda, Mbita in 2002,

⁴⁾% of homozygous L1014S.