Table 7 Toxicity of ethanol plant extracts of Aloe vera and Rheum rhabarbarum against Hyalomma dromedarii males, five days post-treatment.

From: Novel acaricidal and growth-regulating activity of Aloe vera and Rheum rhabarbarum extracts and their oil/water nanoemulsions against the camel tick, Hyalomma dromedarii

Plant extract

Aloe vera

Rheum rhabarbarum

LC50

Lower

upper

LC90

Lower

upper

LC95

Lower

upper

LC50

Lower

upper

LC90

Lower

upper

LC95

Lower

upper

 

7.8

5.90

11.47

19.6

14.72

31.69

22.9

17.09

37.55

7.1

2.89

16.41

18.3

10.72

60.89

21.4

12.43

93.56

Chi

9.411

11.060

Df

4

4

Sig

.052a

.026a

Regression

Y = 1.02 + 0.13*X

Y = 0.98 + 0.13*x

R2

0.602

0.596

Relative toxicity

1.0

1.1

Toxicity index

91.02

100

Reference

Aloe vera

  1. Concentration%
  2. Relative toxicity = LC50 of the least toxic compound/LC50 of the tested compound.
  3. Toxicity index = LC50 of the most toxic compound × 100/LC50 of the tested compound.
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