Year to year and seasonal variations in vector bionomics and malaria transmission in a humid savannah village in west Burkina Faso

Dabiré K.R., Diabaté Abdoulaye, Paré-Toé Léa, Rouamba J., Ouari Ali, Fontenille Didier, Baldet Thierry. 2008. Year to year and seasonal variations in vector bionomics and malaria transmission in a humid savannah village in west Burkina Faso. Journal of Vector Ecology, 33 (1) : 70-75.

https://doi.org/10.3376/1081-1710(2008)33[70:YTYASV]2.0.CO;2

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Type d'url non précisé : http://www.bioone.org/doi/full/10.3376/1081-1710%282008%2933%5B70%3AYTYASV%5D2.0.CO%3B2

Résumé : A longitudinal entomological study was carried out from 1999 to 2001 in Lena, a humid savannah village in the western region of Burkina Faso in order to establish malaria vector bionomics and the dynamics of malaria transmission. In the first year, malaria transmission was mainly due to An. gambiae s.s., but during the two later years was due to An. funestus, which were observed in high frequency towards the end of the rainy season. PCR identification of samples of An. gambiae s.l. showed 93% to be An. gambiae s.s. and 7% An. arabiensis. An. funestus constituting more than 60% of the vectors were identified in PCR as An. funestus s.s. The persistence of intense vectorial activity in this village was probably due to the road building in a swampy area creating a semi-permanent swamp that provided large sites for larval mosquitoes. These swampy sites seemed to be more favorable for An. funestus than for An. gambiae s.s. Thus, land development must be monitored and subjected to planning to minimize vector proliferation. Such a system of planning could lead to the restriction or even elimination of the swamp that is the source of larvae developing in the heart of the village.

Mots-clés Agrovoc : Anopheles, Anopheles gambiae, vecteur de maladie, dynamique des populations, transmission des maladies, malaria, biologie, Enquête pathologique

Mots-clés géographiques Agrovoc : Burkina Faso

Mots-clés complémentaires : Anopheles funestus

Classification Agris : L72 - Organismes nuisibles des animaux
L73 - Maladies des animaux

Champ stratégique Cirad : Axe 4 (2005-2013) - Santé animale et maladies émergentes

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