Table 1.

Average number of Anopheles larvae and percentage reduction for different Bti concentrations (VectoBac® WDG) after larvicide application in open field trials from October 08th 2012 on

	Average number per tub															Percentage reduction
	Early instars					Late instars					Pupae					Early instars				Late instars
Day	C	T1	T2	T3	T4	C	T1	T2	T3	T4	C	T1	T2	T3	T4	T1	T2	T3	T4	T1	T2	T3	T4
0*	50.0	50.0	50.0	50.0	50.0	50.0	50.0	50.0	50.0	50.0	0.0	0.0	0.0	0.0	0.0
1	46.0	12.5	0.0	0.0	0.0	48.3	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	73	100	100	100	100	100	100	100
2	25.0	10.5	8.0	3.0	3.3	27.3	0.0	0.0	0.0	0.0	44.5	0.0	0.0	0.0	0.0	58	68	88	87	100	100	100	100
3	24.0	23.8	20.8	12.5	12.5	32.3	0.0	0.0	0.0	0.0	14.5	0.0	0.0	0.0	0.0	1	14	48	48	100	100	100	100
4	16.0	21.3	24.0	15.3	19.23	20.0	2.0	1.8	0.0	2.0	4.8	0.0	0.0	0.0	0.0	0	0	5	0	90	91	100	90
5	13.7	17.5	21.0	14.3	15.5	14.0	20.3	8.5	6.5	9.8	1.8	0.0	0.0	0.0	0.0	0	0	0	0	0	39	54	30
6	13.7	10.0	14.8	11.5	15.8	13.7	15.3	12.3	8.8	13.0	3.0	0.0	0.0	0.0	0.0	27	0	16	0	0	10	36	5
7*	5.0	4.8	7.5	9.5	10.8	8.3	18.0	13.0	15.0	12.8	3.8	0.0	1.0	0.0	0.3	5	0	0	0	0	0	0	0
8	13.8	0.0	0.0	0.0	0.0	9.3	0.5	0.0	0.0	0.0	2.8	0.0	0.0	0.0	0.0	100	100	100	100	97	100	100	100
9	15.3	2.5	0.0	0.0	0.0	8.8	0.5	0.0	0.0	0.0	1.8	0.0	0.0	0.0	0.0	83	100	100	100	97	100	100	100
10	11.8	2.5	0.0	0.0	0.0	10.8	0.0	0.0	0.0	0.0	1.3	0.5	0.0	0.0	0.0	78	100	100	100	100	100	100	100
11	7.5	5.8	14.3	16.3	17.5	19.0	0.0	0.0	0.0	0.0	0.8	0.0	0.0	0.0	0.0	19	0	0	0	100	100	100	100
12	17.5	12.0	23.3	24.5	20.0	18.5	0.0	0.0	0.0	0.0	2.8	0.0	0.0	0.0	0.0	28	11	26	47	100	100	100	100
13	22.5	13.5	23.5	23.8	18.0	22.0	1.0	1.3	0.0	0.0	1.8	0.0	0.0	0.0	0.0	37	30	44	63	98	96	100	100
14*	11.3	9.0	25.0	13.8	17.5	23.5	4.5	1.3	10.5	3.8	2.0	0.0	0.0	0.0	0.0	0	0	0	0	90	96	73	89
15	4.0	0.0	0.0	0.0	0.0	41.5	0.0	0.0	0.0	0.0	1.5	0.0	0.0	0.0	0.0	100	100	100	100	100	100	100	100
16	0.0	14.0	8.8	8.3	0.0	46.3	0.0	0.0	0.0	0.0	3.8	0.0	0.0	0.0	0.0	0	0	0	0	100	100	100	100
17	0.0	14.0	6.8	17.8	11.5	43.3	0.0	0.0	0.0	0.0	3.8	0.0	0.0	0.0	0.0	0	0	0	0	100	100	100	100
18	7.3	12.8	4.8	17.8	25.5	38.8	0.0	0.0	0.0	0.0	8.0	0.0	0.0	0.0	0.0	0	71	0	0	100	100	100	100
19	4.5	6.5	8.8	23.8	18.5	30.3	5.5	1.0	5.0	0.0	9.5	0.0	0.0	0.0	0.0	0	13	0	0	5	38	63	100
20	11.3	5.8	10.5	17.3	13.3	31.8	8.3	1.8	10.3	3.5	5.3	0.0	0.0	0.0	0.0	36	58	0	24	0	0	28	31
21*	15.0	7.3	22.0	25.0	10.3	43.5	8.8	3.5	14.0	5.5	2.8	0.0	0.0	0.0	0.0	40	34	0	56	0	0	28	21
22	15.0	0.0	0.0	0.0	0.0	36.8	1.3	0.0	0.8	0.5	6.3	1.0	0.0	0.8	0.0	100	100	100	100	82	100	94	89
23	15.0	0.0	0.0	0.0	0.0	34.5	1.3	0.0	0.8	0.5	8.3	0.0	0.0	0.0	0.0	100	100	100	100	82	100	93	89
24	23.0	3.3	19.0	8.3	26.0	25.0	1.0	0.0	0.5	1.0	8.5	0.0	0.0	0.0	0.0	71	44	78	0	80	100	94	68
25	20.5	22.5	28.3	19.0	28.5	31.5	0.5	0.0	0.0	0.0	3.8	0.8	0.0	0.5	0.0	0	6	44	0	92	100	100	100
26	20.5	17.3	21.3	15.5	32.5	29.0	4.3	24.8	5.8	12.5	0.5	0.0	2.0	0.0	0.0	0	29	55	0	27	0	38	0
27	15.0	10.5	12.5	17.5	17.5	33.0	6.0	36.0	8.0	26.0	5.0	1.0	0.5	0.0	0.0	0	43	30	0	10	0	25	0
28	7.5	9.3	28.8	15.3	17.5	32.8	2.0	29.5	14.8	34.0	4.0	2.3	0.8	0.3	1.8	0	0	0	0	70	0	0	0

*Asterisks indicate days with larvicide application. C = control, T₁ = 0.2 mg/l, T₂ = 0.4 mg/l, T₃ = 0.8 mg/l, T₄ = 1.0 mg/l.