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Table 1 Mean proportion of insemination of Anopheles funestus and An. arabiensis collected at different time points

From: Wild populations of malaria vectors can mate both inside and outside human dwellings

Experiments

Collection time point

Anopheles funestus

Anopheles arabiensis

No. females collected

Proportion inseminated (95% CI)a

OR (95%CI) for insemination

P-value

No. females collected

Proportion inseminated (95% CI)a

OR (95% CI) for insemination

P-value

Round 1 of studies in experimental huts in rural Tanzania (14 nights)

Evening (6:00 p.m.)

191

60.7% (53.5 - 67.9)

Reference

 

228

60.6% (55.8 - 65.4)

Reference

 

Night (11:00 p.m.)

175

79.6% (74.5 - 84.7)

2.39 (1.50–3.79)

 < 0.001

240

80.4% (76.3 - 84.5)

2.54 (1.69–3.83)

 < 0.001

Morning (6:00 a.m.)

123

92.8% (89.0 - 96.6)

6.10 (3.14–11.85)

 < 0.001

179

88.1% (83.7 - 92.5)

4.91 (2.90–8.31)

 < 0.001

Round 2 of studies in experimental huts in rural Tanzania (10 nights)

Evening (6:00 p.m.)

17

25% (5.2 - 44.8)

Reference

 

37

46.1% (38.1 - 54.1)

Reference

 

Night (11:00 p.m.)

12

71.4% (42.3 - 100)

2.28 (1.14–3.51)

0.071

36

72.4% (55.2 - 89.6)

2.46 (1.36–4.58)

0.046

Morning (6:00 a.m.)

16

83.3% (67.0 - 99.6)

3.12 (1.26–5.42)

 < 0.001

36

74.6% (62.1 - 87.1)

4.42 (2.02–6.21)

 < 0.001

Studies in village houses in rural Tanzania occupied by local villagers

Evening (6:00 p.m.)

130

75.5% (67.8 - 83.2)

Reference

 

115

80.9% (72.8 - 89.0)

Reference

 

Night (11:00 p.m.)

107

85.9% (78.8 - 93.0)

2.09 (1.06–4.14)

0.03

128

87.6% (81.7 - 93.5)

1.63 (0.83–3.19)

0.15

Morning (6:00 a.m.)

113

94.7% (90.7 - 98.7)

6.14 (2.56–14.74)

 < 0.001

126

91.2% (86.5 - 95.9)

2.79 (1.30–6.02)

0.01

  1. OR Odds ratio
  2. aConfidence interval of the mean