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Table 3 Abundance, repletion status and gonotrophic cycles of indoor-resting anopheles along the altitudinal transect

From: Bionomics of Anopheline species and malaria transmission dynamics along an altitudinal transect in Western Cameroon

Study sites of the altitudinal transect Number of houses sprayed a Anopheline species collected ADH b (No collected) c No unfed / No fully blood-fed / No half or fully gravid c Fed/gravid ratio Estimated duration of gonotrophic cycle (days)
Djuttitsa (1965 m) 210 An funestus 0 (0) - / - / - - -
   An gambiae 0.18 ± 0.39 (38) 20 / 3 / 16 1 : 5.33 6 to 7
   An hancocki 0.06 ± 0.23 (12) 3 / 2 / 7 1 : 3.5 4 to 5
   Total 0.24 ± 0.47 (50) 23 / 5 / 23 1 : 4.42 4 to 7
Dschang (1400 m) 224 An funestus 0.07 ± 0,29 (16) 3 / 3 / 10 1 : 3.33 4 to 5
   An gambiae 0.83 ± 1.21 (186) 90 / 25 / 71 1 : 2.84 3 to 4
   An hancocki 0.02 ± 0.13 (4) 1 / 1 / 2 1 : 2.0 3
   Total 0.92 ± 1.26 (206) 94 / 29 / 83 1 : 2.72 3 to 5
Santchou (750 m) 259 An funestus 0.19 ± 0.51 (48) 35 / 4 / 9 1 : 2.25 3 to 4
   An gambiae 2.88 ± 2.78 (746) 455 / 98 / 193 1 : 1.97 2 to 3
   An hancocki 0 (0) - / -. / - - -
   Total 3.06 ± 2.89 (794) 490 / 102 / 202 1 : 2.11 2 to 4
  1. a About 10 houses were sprayed in each of the three study sites of the altitudinal transect during every survey, assigning our protocol to the Minimum Sample Size Approach (MSSA) [42]. However, houses were not randomly sampled, but biased by the tendency of targeting and spraying repeatedly those houses where previous enquiries were positive. Results obtained for average mosquito densities were therefore overestimated.
  2. b ADH: Average female Anopheles density /house ± standard deviation.
  3. c No: Number of female Anopheles mosquitoes.