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Table 2 Mortality rates of female An. arabiensis after 24 h exposure to four insecticides in 2015 and 2016 in Nouakchott

From: Pyrethroid resistance in the major malaria vector Anopheles arabiensis in Nouakchott, Mauritania

Insecticide

2015

2016

χ 2

P

n (# replicate)

Mean mortality (%) (95% CI)

n (# replicate)

Mean mortality (%) (95% CI)

Permethrin (0.75%)

181 (9)

51.9 (44.7–59.1)

203 (10)

24.1 (18.8–30.5)

31.5

< 0.001

Deltamethrin (0.05%)

197 (8)

83.7 (77.9–88.2)

189 (9)

39.1 (32.5–46.3)

81.1

< 0.001

Bendiocarb (0.1%)

106 (5)

100

203 (10)

100

–

–

Malathion (2%)

218 (10)

100

197 (8)

100

–

–

  1. Abbreviations: n total number of mosquitoes tested, CI confidence interval