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Table 2 Results of bioassays conducted on Peruvian Aedes aegypti

From: Susceptibility to insecticides and resistance mechanisms in three populations of Aedes aegypti from Peru

Insecticide

Population

No. tested

% Mortalitya

95% CI

Resistance status

DDT

Chosica

299

0

R

Punchana

300

0

R

Piura

301

13.3 ± 9.2

7.4–19.1

R

Deltamethrin

Chosica

294

99.3 ± 1.6

98.3–100.3

S

Punchana

298

51.3 ± 2.9

43.2–59.6

R

Piura

604

74.7 ± 0.4

70.2–79

R

Cypermethrin

Chosica

301

52.2 ± 0.1

39.8–65.3

R

Punchana

302

2.3 ± 2.7

0.6–4.0

R

Piura

nt

nt

nt

Alpha-cypermethrin

Chosica

308

72.4 ± 3.4

63.6–80.6

R

Punchana

295

4.7 ± 5.0

1.6–8.0

R

Piura

nt

nt

nt

Lambda-cyhalothrin

Chosica

290

96.9 ± 5.2

93.6–100.2

RV

Punchana

301

24.3 ± 5.5

20.8–27.8

R

Piura

nt

nt

nt

Etofenprox

Chosica

302

8.3 ± 10.3

1.7–14.8

R

Punchana

300

0.3 ± 1.2

-0.4–1.1

R

Piura

nt

nt

nt

Permethrin

Chosica

nt

nt

nt

Punchana

nt

nt

nt

Piura

302

12.9 ± 6.3

8.9–16.9

R

Malathion

Chosica

301

94.7 ± 4.3

92–97.4

RV

Punchana

304

99.0 ± 1.8

97.9–100.1

S

Piura

586

98.8 ± 2.2

97.8–99.7

S

Fenitrothion

Chosica

303

36.6 ± 7.9

31.7–41.7

R

Punchana

301

9.0 ± 6.9

4.7–13.5

R

Piura

309

5.8 ± 5.0

2.8–9.1

R

Pirimiphos-methyl

Chosica

295

84.1 ± 7.1

79.57–8.54

R

Punchana

301

2.3 ± 2.7

0.6–4.0

R

Piura

294

39.5 ± 9.2

33.7–45.4

R

  1. aValues are the mean ± SD. A minimum of three assays were performed per insecticide at each site
  2. Abbreviations: CI, confidence interval; nt, not tested; R, resistant; S, susceptible; RV, resistance to be verified