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June 27, 2003Tropical Medicine & International HealthOpen Access

Anopheles species of the mount Cameroon region: biting habits, feeding behaviour and entomological inoculation rates

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Authors

SWSamuel WanjiUniversity of BueaTTTheodore TankeUniversity of BueaCACaroline AjoninaUniversität Hamburg

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Implication

Observational study uncovers high Plasmodium falciparum inoculation rates and anthropophilic feeding in local mosquito populations, indicating intense malaria transmission.

Key Points

  • To determine the species composition, feeding preferences, nocturnal biting dynamics, and entomological inoculation rates of malaria vectors across dry and rainy seasons.
  • Collected N=2,165 Anopheles mosquitoes (805 in rainy season, 1,360 in dry season) across multiple sampling sites along a 20-km transect ranging up to 1,200 m above sea level.
  • Identified vector species, calculated the human blood index (HBI) from blood-fed specimens, and measured Plasmodium falciparum sporozoite infection rates across seasons.
  • Identified five Anopheles species, establishing Anopheles gambiae s.s., An. funestus, and An. hancocki as primary vectors with biting activity peaking between 1:00 AM and 2:00 AM.
  • Blood-fed vectors demonstrated a human blood index of 98.29%, and overall sporozoite rates were significantly higher in the rainy season (9.4%) than in the dry season (4.2%).
  • Calculated an average entomological inoculation rate of 0.44 infective bites per person per night (161 infective bites per person annually), with zero vectors captured at 1,200 m altitude.

Cite This Study

Wanji et al. (2003) studied this question.

synapsesocial.com/papers/6a8271ce11aadcfaec26feb2https://doi.org/10.1046/j.1365-3156.2003.01070.x
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Also Consider

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  1. 1The availability of potential hosts as a determinant of feeding behaviours and malaria transmission by African mosquito populations2001 · 121 citations
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