Table 3 Toxicity of the ginger, mint, thyme and oregano essential oils to Apis mellifera and Trigona hyalinata (Hymenoptera: Apidae) by exposure via topically by 24 h.

From: Selectivity of the botanical compounds to the pollinators Apis mellifera and Trigona hyalinata (Hymenoptera: Apidae)

Treat.

Species

N

LD50 (IC) %

LD90 (IC) %

Slope

Chi2

Ginger

A. mellifera

300

17.98 (15.09–19.68)

27.41 (24.73–34.18)

7.00 ± 1.57

19.84

T. hyalinata

400

32.65(29.26–37.14)

77.22 (61.86–109.66)

3.42 ± 0.43

63.90

Mint

A. mellifera

300

12.58 (8.22–14.62)

25.50 (21.14–46.44)

4.17 ± 1.20

11.73

T. hyalinata

400

16.38 (14.21–18.26)

35.97 (30.82–45.95)

3.75 ± 0.51

52.71

Oregano

A. mellifera

300

2.03 (1.32–2.87)

9.88 (6.47–19.61)

1.86 ± 0.30

39.14

 

T. hyalinata

300

4.57 (3.37–5.79)

20.01 (15.04–30.32)

1.63 ± 0.17

61.05

Thyme

A. mellifera

300

3.30 (2.13–4.38)

9.84 (7.54–14.36)

2.50 ± 0.36

47.62

T. hyalinata

300

6.53 (4.91–8.12)

30.41 (22.82–47.06)

1.92 ± 0.25

58.22

  1. Treat= Treatment, N = individuals number, IC = Confidence interval of 95%,
  2. Chi2 = chi-squared. Significance level of P < 0.0001.