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Table 4 kdr and ace1 allele frequencies in An. gambiae s.l. from Ellibou, Côte d’Ivoire in 2015

From: Species composition and insecticide resistance in malaria vectors in Ellibou, southern Côte d’Ivoire and first finding of Anopheles arabiensis in Côte d’Ivoire

Allele

Species

n

Genotype

Allele frequency (%)

   

SS

RS

RR

 

kdr-L995F

An. arabiensis

23

13

9*

1

23.9 [13.9–37.9]

 

An. coluzzii

47

7

17

23

67.0 [57.0–75.7]

 

An. gambiae s.s.

48

0

0

48

100 [92.6–100]

 

An. coluzzii/An. gambiae s.s.

6

1

2

3

66.7 [22.2–95.7]

kdr-L995S

An. arabiensis

23

3

10*

10

65.2 [42.7–83.6]

 

An. coluzzii

47

47

0

0

0 [0.0–7.5]

 

An. gambiae s.s.

48

48

0

0

0 [0.0–7.4]

 

An. coluzzii/An. gambiae s.s.

6

6

0

0

0 [0.0–45.9]

kdr-N1570Y

An. arabiensis

23

23

0

0

0 [0.0–14.8]

 

An. coluzzii

47

47

0

0

0 [0.0–7.5]

 

An. gambiae s.s.

48

41

6

1

8.3 [2.3–19.9]

 

An. coluzzii/An. gambiae s.s.

6

6

0

0

0 [0.0–45.92]

ace1-G280S

An. arabiensis

23

20

3

0

6.5 [2.2–17.5]

 

An. coluzzii

47

14

31

2

37.2 [28.1–47.3]

 

An. gambiae s.s.

48

23

21

4

30.2 [21.9–40.0]

 

An. coluzzii/An. gambiae s.s.

6

0

6

0

50 [11.8– 88.1]

  1. n: total number of individuals screened
  2. RR homozygous mutant; RS: heterozygous, SS homozygote wild type
  3. *Seven individuals harboured the double 995 F and 995 S mutant alleles simultaneously