Spatial distribution and habitat characterisation of Anopheles larvae along the Kenyan coast.

摘要: Background & objectives: A study was conducted to characterise larval habitats and determine spatial heterogeneity of the Anopheles mosquito larvae. The from May June 1999 in nine villages along Kenyan coast. Methods: Aquatic were sampled by use standard dipping technique. characterised based on size, pH, distance nearest house, coverage canopy, surface debris, algae emergent plants, turbidity, substrate, habitat type. Results: total 110 aquatic like stream pools (n = 10); puddles 65); tire tracks 5); ponds 5) swamps 25) located three districts 7,263 larvae collected, 63.9% early instars 36.1% late instars. Morphological identification III IV instar microscopy yielded 90.66% 2,377) gambiae Complex, 0.88% 23) An. funestus, coustani 7.63% 200), rivulorum 0.42% 11), pharoensis 0.19% 5), swahilicus 0.08% 2), wilsoni 0.04% 1) 0.11% 3) unidentified. subset Complex identified morphologically, further analysed using rDNA-PCR technique resulting 68.22% 1,290) s.s., 7.93% 150) arabiensis 23.85% 451) merus. Multiple logistic regression model showed that plants (p 0.019), floating debris 0.038) best predictors abundance these habitats. Interpretation conclusion: Habitat type, found be key factors determining presence For effective control, type should considered most productive given a priority abatement programme.