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Table 6 Effect of CO2 baited traps on house entry behaviour in the MalariaSphere

From: Sugar-fermenting yeast as an organic source of carbon dioxide to attract the malaria mosquito Anopheles gambiae

Treatment outdoors Treatment indoors Total number
caught
χ2-test N Mean %
Caught (± sem)1
O I
yeast CO2 (17.5 g) no odour 367 101 P < 0.001 800 58.5 ± 5.7
yeast CO2 (17.5 g) human 115 267 P < 0.001 800 47.8 ± 6.2
ind. CO2 (100 ml/min) human 169 259 P < 0.001 800 53.5 ± 5.5
yeast CO2 (17.5 g)+ worn sock human 454 96 P < 0.001 800 68.8 ± 9.3
ind. CO2 (100 ml/min)+ worn sock human 407 184 P < 0.001 800 73.9 ± 7.5
  1. Yeast = yeast-produced (17.5 g yeast+250 g sugar+2½ L water)
  2. Ind. = industrial (100 ml/min)
  3. O = number of mosquitoes caught in the MM-X trap outside the house
  4. I = total number of mosquitoes caught in 2 CDC light traps and found resting inside the house
  5. N = total number of mosquitoes released
  6. 1 Mean percentage caught expressed as the number of female mosquitoes recovered from inside the three traps (1 MM-X, 2 CDC) and the house together divided by the number of mosquitoes that flew out of the release cage.
  7. Underlined number: significant higher catch (χ2-test, P < 0.05)