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Table 1 Mortality rates and knockdown times of Anopheles mosquitoes exposed to deltamethrin in Myanmar

From: Community structure and insecticide resistance of malaria vectors in northern-central Myanmar

Species group

Female adults from cow-baited tent collection (CBTC)

Female adults reared from field-collected larvae (RFCL)

P-value

n

KT50/min (95% CI)

MR (%) (mean ± SE)

Status

n

KT50/min (95% CI)

MR (%) (mean ± SE)

Status

Barbirostris

170

24.9(22.4–27.6)

81.1 ± 3.2

R

166

26.6(24.3–29.2)

71.5 ± 3.0

R

0.0462

Hyrcanus

260

16.5(14.8–18.5)

77.9 ± 2.7

R

168

21.1(18.7–23.7)

67.9 ± 3.5

R

0.0241

Annularis

144

17.6(15.4–20.1)

98.7 ± 0.9

S

115

18.8(16.8–21.2)

93.9 ± 1.0

PR

0.0052

Funestus

110

11.6(10.4–13.0)

100

S

148

15.8(14.1–17.6)

97.6 ± 0.7

PR

0.0426

Vagus

0

na

na

na

102

20.6(18.4–23.1)

72.5 ± 2.9

R

na

Tessellatus

93

13.3(11.5–15.3)

96.7 ± 3.2

PR

0

na

na

na

na

Kochi

64

12.9(11.1–14.9)

100

S

56

19.3(17.5–21.5)

100

S

na

  1. KT50, time to knockdown 50% mosquitoes; MR, mortality rate; CI, confidence interval; S, susceptible (mortality rate ≥ 98%); SE, standard error; PR, probably resistant (mortality rate 90–97%); R, resistant (mortality rate < 90%). Values for P < 0.05 indicate significant difference in mortality rates between the two sampling methods (CBTC and RFCL). An An. sinensis susceptible laboratory strain was used as a control for comparison