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Table 1 Larvicidal activity of Calotropis procera crude extract on Culex quinquefasciatus at different concentrations

From: Evaluation of the insecticidal activity of the methanol extracts of Calotropis procera (Asclepiadaceae) and Albizia lebbeck (Mimosaceae) on larvae of Culex quinquefasciatus Say, 1823

Larval stages

Mortality rate of Cx. quinquefasciatus larvae (%)

LC50

LC90

CI95

\({\chi }^{2}\)

(df = 6)

Equations of regression line

Concentrations of crude extract of Calotropis procera (mg/mL)

LFL

UFL

0.1

0.2

0.3

0.4

0.5

0.6

0.7

LC50

LC90

LC50

LC90

L1

14

50

55

92.39

98.86

100

100

0.194

0.340

0.174

0.278

0.215

0.415

41.24*

Y = 5.2615x + 8.75

L2

11

17

22

77.17

83.69

100

100

0.251

0.433

0.210

0.235

0.301

0.798

71.75*

Y = 5.3993x + 8.2448

L3

9

18

20

75

77.27

100

100

0.258

0.444

0.208

0.209

0.319

0.941

61.22*

Y = 5.4196x + 8.1901

L4

6

13

17

72.82

76.13

97,61

100

0.284

0.502

0.257

0.386

0.314

0.652

52.79*

Y = 5.189x + 7.8331

  1. LFL, lower fiducidal limit; UFL, upper fiducidal limit; χ2, Chi-square value; df, degrees of freedom; CI, confidence interval
  2. *Significant at P < 0.05 level