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Table 4 Results of the bioassays

From: An improved extraction method for surface dosage of insecticides on treated textile fabrics

  Total number of mosquitoes tested KDT100 (min.) (a) Number of mosquitoes KD Number of mosquitoes dead 24H Number of mosquitoes functionally dead % KD % Mortality 24H (b) % Functional mortality (c)
Control
 1 16 60 0 1 0 0 6.25 6.25
 2 15 60 0 0 0 0 0 0
 3 15 60 0 0 0 0 0 0
 4 15 60 0 1 0 0 6.67 6.67
 Total 61 60 0 2 0 0 3.28 3.28
Broken twill—49 mg/m2
 1 14 12.08 14 13 1 100 92.62 100
 2 15 12.11 15 12 3 100 79.32 100
 3 13 12.35 13 12 1 100 92.05 100
 4 15 12.42 15 14 1 100 93.11 100
 Total 57 12.24 57 51 6 100 89.12 100
Satin—25 mg/m2
 1 14 19.02 14 13 1 100 92.62 100
 2 14 19.16 14 14 0 100 100 100
 3 16 18.95 16 16 0 100 100 100
 4 11 19 11 11 0 100 100 100
 Total 55 19.03 55 54 1 100 98.12 100
Plain—32 mg/m2
 1 14 14.56 14 13 0 100 92.62 92.62
 2 15 14.63 15 14 1 100 93.11 100
 3 15 14.74 15 15 0 100 100 100
 4 15 14.81 15 15 0 100 100 100
 Total 59 14.69 59 57 1 100 96.5 98.25
Twill—25 mg/m2
 1 16 19.58 16 16 0 100 100 100
 2 17 19.8 17 17 0 100 100 100
 3 14 19.4 14 13 1 100 92.62 100
 4 15 19.16 15 15 0 100 100 100
 Total 62 19.49 62 61 1 100 98.15 100
Olyset—12 mg/m2
 1 13 34.4 13 13 0 100 100 100
 2 18 35.62 18 17 1 100 94.4 100
 3 16 35.15 16 15 1 100 93.8 100
 4 11 35.53 11 11 0 100 100 100
 Total 58 35.17 58 56 2 100 97.05 100
  1. (a) KDT100 (min.): The time frame needed to obtain 100% knockdown of mosquitoes constantly exposed to permethrin treated fabrics. Mortality was recorded in two ways
  2. (b) % 24 h Mortality: counting the mosquitoes really dead after 24 h (real mortality)
  3. (c) % Functional mortality: including surviving mosquitoes with three or less legs after 24 h