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Table 3 Association between percentage 24-h mortality and knockdown (KD) time using WHO test tubes

From: The emergence of insecticide resistance in the major malaria vector Anopheles funestus (Diptera: Culicidae) from sentinel sites in Mutare and Mutasa Districts, Zimbabwe

Insecticide

Site

% mortality

KD50 (min)

KD95 (min)

Resistance status

0.05 % lambda-cyhalothrin

Burma Valley

9.0

No KD

No KD

R

Zindi

4.7

No KD

No KD

R

0.05 % Deltamethrin

Burma Valley

12.6

No KD

No KD

R

Zindi

16.3

No KD

No KD

R

0.1 % Bendiocarb

Burma Valley

25.5

No KD

No KD

R

Zindi

8.0

No KD

No KD

R

0.5 % Etofenprox

Burma Valley

3.3

No KD

No KD

R

Zindi

13.3

No KD

No KD

R

4 % DDT

Burma Valley

100

50

60

S

Zindi

100

40

50

S

1 % Pirimiphos-methyl

Burma Valley

100

30

60

S

Zindi

100

50

80

S

  1. S, susceptible; R, resistant; KD, knockdown; KD50, knockdown rate for 50 % of mosquitoes; KD95, knockdown rate for 95 % of mosquitoes; No KD, loss of knockdown effect (<20 % of mosquitoes knocked down after 1-h exposure)