Table 3 Median lethal knockdown activity (mins) of the essential oils extracted from seven geographical regions of Ar. argyi against female adults of An. sinensis.

From: Repellency and insecticidal activity of seven Mugwort (Artemisia argyi) essential oils against the malaria vector Anopheles sinensis

Oil

KT50 (min)a

95% Confidence limits

Toxicity regression equation (y = a + bx)

χ2

CQ

13.85 ± 3.5

13.08–14.62

y = −4.33 + 0.31x

0.29*

SC

10.18 ± 3.4

9.43–10.91

y = −3.71 + 0.36x

0.83*

YN

50.62 ± 8.6

48.19–53.52

y = −2.69 + 0.05x

12.95*

HB

16.77 ± 4.7

15.39–18.08

y = −1.87 + 0.11x

5.55*

HN

10.02 ± 2.8

9.02–10.96

y = −2.21 + 0.22x

3.02*

SD

9.32 ± 2.2

8.61–10.05

y = −3.36 + 0.36x

2.84*

GS

4.71 ± 1.2

3.50–5.32

y = −2.45 + 0.51x

0.33*

  1. aKT50 represents the knockdown time of half individuals, which was determined by log-probit analysis. Three experimental repeats with the essential oil dosage of 2 µL. *Significant at p < 0.05. CQ, SC, YN, HB, HN, SD and GS: essential oils from Chongqing, Sichuan, Yunnan, Hubei, Henan, Shandong and Gansu province/municipality, respectively.
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