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Table 2 Knockdown time values (in minutes) of Anopheles mosquitoes according to sites of collection and insecticides

From: Status of insecticide resistance in Anopheles mosquitoes in Ubon Ratchathani province, Northeastern Thailand

Site

Species

Insecticide

n

KDT50 [CI95] (min)

KDT95 [CI95] (min)

Pakla

An. hyrcanus s.l.

Deltamethrin 0.05%

11

39.1 [30.6–55.2]

220.7 [117.4–1106.2]

 

An. nivipes

Deltamethrin 0.05%

17

8.4 [6.8–9.9]

16.6 [13.7–23.3]

 

An. maculatus s.l.

Deltamethrin 0.05%

11

13.9 [11.2–16.1]

25.1 [20.9–35.3]

 

An.philippinesis

Deltamethrin 0.05%

10

8.7 [6.5–10.7]

16.6 [13.1–27.2]

 

An. dirus s.l.

Deltamethrin 0.05%

18

10.6 [9.1–11.8]

15.0 [13.2–21.5]

 

An. vagus

Deltamethrin 0.05%

24

14.7 [8.8–20.1]

43.5 [29.9–102.6]

Talong

An. hyrcanus s.l.

Deltamethrin 0.05%

96

13.9 [12.3–15.5]

80.0 [68.3–97.6]

 

An. hyrcanus s.l.

Permethrin 0.75%

100

16.2 [14.6–17.6]

78.6 [68.3–93.5]

 

An. hyrcanus s.l.

DDT 4%

102

35.4 [31.0–40.9]

140.7 [102.4–235.1]

 

An. barbirostris s.l.

Deltamethrin 0.05%

25

7.4 [5.6–9.1]

24.5 [20.0–32.8]

 

An. maculatus s.l.

Deltamethrin 0.05%

19

14.7 [13.3–16.0]

21.9 [19.5–26.5]

Payaka

An. maculatus s.l.

Deltamethrin 0.05%

22

7.6 [6.5–8.8]

11.6 [9.9–15.6]

Nongmek

An. hyrcanus s.l.

Deltamethrin 0.05%

100

96.1 [77.7–131.4]

929.1 [512.9–2315.8]

 

An. hyrcanus s.l.

Deltamethrin 0.05%

91

127.0 [89.1–263.9]

966.1 [400.3–6405.9]

 

An. hyrcanus s.l.

Permethrin 0.75%

75

59.8 [49.8–77.6]

891.2 [465.7–2502.6]

 

An. hyrcanus s.l.

DDT 4%

75

35.3 [31.6–39.6]

128.3 [98.8–190.4]

 

An. barbirostris s.l.

Deltamethrin 0.05%

10

12.7 [10.0–15.3]

26.7 [21.5–38.8]

 

An. barbirostris s.l.

Permethrin 0.75%

30

18.7 [17.0–20.2]

32.7 [29.5–37.6]

 

An. barbirostris s.l.

DDT 4%

29

55.7 [51.9–61.7]

93.8 [79.4–126.2]

 

An. philippinesis

Deltamethrin 0.05%

13

6.2 [4.6–7.7]

12.0 [9.4–21.7]

 

An. philippinesis

Deltamethrin 0.05%

47

10.8 [9.8–11.6]

16.9 [15.4–19.7]

 

An. philippinesis

Permethrin 0.75%

13

15.3 [13.1–17.4]

26.4 [22.5–35.0]

 

An. philippinesis

DDT 4%

14

55.5 [49.4–68.9]

108.3 [81.6–218.1]

Sanghom

An. hyrcanus s.l.

Deltamethrin 0.05%

100

56.6 [49.5–67.5]

560.1 [355.8–1073.2]

 

An. hyrcanus s.l.

Deltamethrin 0.05%

61

82.4 [60.1–158.2]

1018.5 [379.0–9977.9]

 

An. hyrcanus s.l.

Permethrin 0.75%

100

32.4 [30.2–34.8]

140.0 [116.8–176.5]

 

An. hyrcanus s.l.

Permethrin 0.75%

99

28.1 [25.0–31.3]

146.6 [112.1–216.1]

 

An. hyrcanus s.l.

DDT 4%

100

60.1 [50.6–78.4]

274.7 [170.6–648.6]

 

An. barbirostris s.l.

Deltamethrin 0.05%

50

11.7 [9.9–13.4]

24.2 [20.7–30.4]

 

An. barbirostris s.l.

Permethrin 0.75%

12

16.1 [13.7–18.4]

27.7 [23.6–36.8]

 

An. barbirostris s.l.

Permethrin 0.75%

25

16.1 [13.3–18.7]

32.3 [27.0–43.1]

 

An. barbirostris s.l.

DDT 4%

12

60.5 [46.5–108.1]

290.6 [143.4–2066.4]

 

An. barbirostris s.l.

DDT 4%

37

58.9 [55.6–64.7]

89.3 [77.5–116.1]

 

An. philippinesis

Deltamethrin 0.05%

10

9.2 [6.7–11.1]

15.0 [12.3–24.9]

 

An. philippinesis

Deltamethrin 0.05%

30

8.7 [7.5–9.6]

13.0 [11.6–16.0]

 

An. philippinesis

Permethrin 0.75%

30

14.1 [12.6–15.6]

27.5 [24.3–32.5]

Nachalauy

An. hyrcanus s.l.

Deltamethrin 0.05%

73

48.9 [44.4–55.0]

218.1 [163.8–326.5]

 

An. hyrcanus s.l.

Permethrin 0.75%

75

38.7 [33.7–45.8]

539.7 [318.5–1206.6]

 

An. hyrcanus s.l.

DDT 4%

75

39.7 [32.5–51.4]

210.5 [125.7–587.4]

 

An. barbirostris s.l.

Deltamethrin 0.05%

75

9.4 [8.6–10.1]

18.6 [16.9–21.1]

Chong Ta Ou

An. barbirostris s.l.

Deltamethrin 0.05%

10

22.0 [19.2–24.5]

32.9 [28.9–42.1]

 

An. nivipes

Deltamethrin 0.05%

7

12.0 [8.8–14.6]

18.7 [15.2–38.7]

 

An. dirus s.l.

Deltamethrin 0.05%

16

9.8 [7.7–11.7]

23.9 [19.4–32.9]

 

An. karwari

Deltamethrin 0.05%

8

17.3 [15.2–19.5]

21.2 [19.0–31.1]

  1. KDT 50 estimated knockdown time for 50% of the population, KDT 95 estimated knockdown time for 95% of the population, CI 95 95% confidence intervals