Table 2 Mean (±SE) numbers of Anopheles spp. larvae and pupae sampled pre- and post-treatment with larvicides in temporary pools at San Simón beach, Mazatán municipality, Chiapas, Mexico

From: Efficacy and non-target impact of spinosad, Bti and temephos larvicides for control of Anopheles spp. in an endemic malaria region of southern Mexico

	Treatment
Time (Weeks)	Control	Bti	Spinosad	Temephos
Pre-treatment
-5	0.0 ± 0.0^a	4.8 ± 2.3^a	2.5 ± 2.2^a	2.3 ± 2.3^a
-4	0.0 ± 0.0^b	0.0 ± 0.0^b	2.3 ± 1.9^ab	5.0 ± 4.4^a
-3	9.5 ± 8.2^a	18.0 ± 12.8^a	12.3 ± 10.0^a	15.8 ± 15.1^a
-2	1.3 ± 0.8^a	11.3 ± 6.0^a	4.0 ± 1.7^a	1.0 ± 1.0^a
-1	8.0 ± 5.7^a	19.8 ± 5.1^a	25.3 ± 14.9^a	31.8 ± 22.2^a
Post-treatment
1	1.3 ± 0.8^a	5.5 ± 5.5^a	0.0 ± 0.0^a	0.0 ± 0.0^a
2	0.8 ± 0.8^b	9.8 ± 5.5^a	0.0 ± 0.0^b	0.0 ± 0.0^b
3	2.5 ± 2.5^b	13.0 ± 5.6^a	0.0 ± 0.0^b	0.0 ± 0.0^b
4	3.3 ± 3.3^ab	9.3 ± 6.6^a	0.0 ± 0.0^b	0.0 ± 0.0^b
5	4.8 ± 4.1^a	1.5 ± 0.6^ab	0.0 ± 0.0^b	0.0 ± 0.0^b
6	0.0 ± 0.0^b	4.0 ± 1.8^a	4.5 ± 4.5^a	0.0 ± 0.0^b
7	1.5 ± 1.5^a	0.8 ± 0.8^a	1.5 ± 1.5^a	0.0 ± 0.0^a
8	0.0 ± 0.0^b	4.0 ± 1.4^a	0.0 ± 0.0^b	0.0 ± 0.0^b
9	1.5 ± 1.2^a	1.5 ± 1.0^a	0.0 ± 0.0^a	0.0 ± 0.0^a
10	7.5 ± 5.7^a	7.5 ± 5.2^a	0.0 ± 0.0^b	2.3 ± 2.3^a
11	2.5 ± 1.0^a	4.0 ± 3.4^a	0.0 ± 0.0^b	11.5 ± 9.3^a
12	5.5 ± 4.6^a	0.3 ± 0.3^b	0.3 ± 0.3^b	0.0 ± 0.0^b
13	11.8 ± 7.9^a	27.3 ± 7.5^a	0.0 ± 0.0^b	21.5 ± 20.2^a
14	7.5 ± 5.7^a	6.8 ± 4.2^a	0.0 ± 0.0^b	0.8 ± 0.8^b
15	11.8 ± 3.9^a	10.3 ± 2.5^a	0.0 ± 0.0^b	8.0 ± 3.4^a
20	20.5 ± 3.5^a	26.5 ± 19.3^a	2.0 ± 2.0^b	16.3 ± 4.5^a

Values followed by identical letters did not differ significantly for comparisons within rows (mixed model analysis on ln (x + 1) transformed values with Toeplitz correlation structure, P > 0.005 following Bonferroni correction).

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