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Table 1 Total and mean (±SE) number of Anopheles gambiae attracted by carbon dioxide produced in a dual-choice assay in a screen house between molasses treatments (test combinations of molasses and dry yeast dissolved in 2 L water) and a reference treatment (250 g refined sugar, 17.5 g dry yeast and 2 L water)

From: Molasses as a source of carbon dioxide for attracting the malaria mosquitoes Anopheles gambiae and Anopheles funestus

Molasses treatments

N

n

Mean ± SE number of mosquitoes attracted

P-value

   

Molasses treatment

Reference treatment

 

125 g molasses - 17.5 g yeast - 2 L water

4

507

61.5 ± 4.0

65.3 ± 4.0

0.51

125 g molasses - 8.75 g yeast - 2 L water

4

417

35.8 ± 3.0

68.5 ± 4.1

0.001

250 g molasses - 17.5 g yeast - 2 L water

4

460

70 ± 4.2

45.0 ± 3.4

0.001

250 g molasses - 35 g yeast - 2 L water

4

371

50.8 ± 3.6

42.0 ± 3.2

0.07

500 g molasses - 17.5 g yeast - 2 L water

4

545

79.3 ± 4.5

57.0 ± 3.8

0.001

500 g molasses - 35 g yeast - 2 L water

4

440

50.8 ± 3.6

59.3 ± 3.9

0.11

  1. N is the number of experimental nights, n is the total number of mosquitoes caught whereas SE is the standard error of the mean catch per night. A total of 200 female An. gambiae were released per night. Pairwise comparisons in the same row of mean catches differ significantly at P <0.05 (Chi-square test).