Laevae stage

Concentration

(mg/l)

Mortality

(%)

LC₅₀

LC₉₀

95% Confidence

χ²

r

LC₅₀

LC₉₀

1^st Instar

5

10

20

25

50

25

50

50

60

70

5.237

49.240

3.316 - 7.003

36.377 - 84.233

3.804

0.805

2^nd instar

5

10

20

25

50

30

50

50

63

75

9.310

94.969

2.375 - 15.629

41.314 - 4167.317

6.958

0.782

3^rd/4^th instar

5

10

20

25

50

45

60

75

80

80

13.626

105.542

7.276 - 21.458

49.564 - 1270.669

6.183

0.823