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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