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