Parasites & Vectors

Table 3 Mean (±SE) numbers of Culex 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	8.5 ± 3.9^b	26.0 ± 12.7^a	49.5 ± 26.6^a	5.7 ± 2.9^b
-4	19.8 ± 12.6^b	44.0 ± 30.6^ab	105.8 ± 56.2^a	3.5 ± 1.3^bc
-3	56.0 ± 22.8^a	18.0 ± 7.0^a	185.5 ± 129.8^a	71.3 ± 61.9^a
-2	65.0 ± 45.9^b	74.3 ± 45.9^ab	125.8 ± 73.1^a	17.3 ± 6.0^bc
-1	122.3 ± 43.7^a	135.3 ± 84.3^a	125.3 ± 67.6^a	36.5 ± 7.6^a
Post-treatment
1	132.3 ± 68.8^a	2.8 ± 2.4^b	0.0 ± 0.0^b	0.0 ± 0.0^b
2	21.0 ± 7.6^a	15.5 ± 12.9^a	0.0 ± 0.0^b	0.0 ± 0.0^b
3	143.0 ± 70.7^a	51.5 ± 35.8^b	0.0 ± 0.0^c	0.0 ± 0.0^c
4	90.5 ± 48.4^a	45.5 ± 36.3^a	0.0 ± 0.0^b	0.0 ± 0.0^b
5	49.8 ± 30.8^a	13.0 ± 7.3^a	0.0 ± 0.0^b	0.0 ± 0.0^b
6	184.8 ± 94.4^a	30.5 ± 29.5^b	0.0 ± 0.0^c	0.8 ± 0.5^bc
7	238.5 ± 133.2^a	19.5 ± 14.2^b	0.0 ± 0.0^c	0.8 ± 0.8^c
8	82.8 ± 35.8^a	8.8 ± 6.9^b	0.0 ± 0.0^c	6.8 ± 4.5^b
9	40.0 ± 19.5^a	26.5 ± 18.5^a	0.0 ± 0.0^b	7.8 ± 5.7^ab
10	55.0 ± 25.0^a	28.8 ± 17.0^a	0.0 ± 0.0^b	19.3 ± 9.9^a
11	39.0 ± 15.5^a	23.5 ± 17.5^ab	0.0 ± 0.0^c	47.5 ± 16.8^a
12	54.8 ± 17.3^a	28.0 ± 17.2^a	0.0 ± 0.0^b	54.3 ± 20.7^a
13	85.8 ± 43.7^ab	46.0 ± 34.2^b	0.0 ± 0.0^c	184.8 ± 86.5^a
14	44.8 ± 29.6^b	136.3 ± 112.9^b	0.0 ± 0.0^c	327.8 ± 116.4^a
15	42.3 ± 25.4^b	125.3 ± 76.8^a	0.0 ± 0.0^c	228.8 ± 77.4^a
20	13.0 ± 11.0^ab	22.5 ± 15.7^a	2.7 ± 2.7^b	50.8 ± 26.6^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).

Back to article page