Antonio-Nkondjio C. auteur aut IRD Ndo C. auteur aut IRD Costantini Carlo auteur aut IRD Awono-Ambene Parfait auteur aut IRD Fontenille Didier auteur aut IRD Simard Frédéric auteur aut IRD text journalArticle eng text/pdf born digital access Despite their importance as malaria vectors, little is known of the bionomic of Anopheles nili and Anopheles moucheti. Larval collections from 24 sites situated along the dense hydrographic network of south Cameroon were examined to assess key ecological factors associated with these mosquitoes distribution in river networks. Morphological identification of the III and IV instar larvae by the use of microscopy revealed that 47.6% of the larvae belong to An. nili and 22.6% to An. moucheti. Five variables were significantly involved with species distribution, the pace of flow of the river (lotic, or lentic), the light exposure (sunny or shady), vegetation (presence or absence of vegetation) the temperature and the presence or absence of debris. Using canonical correspondence analysis. it appeared that lotic rivers. exposed to light, with vegetation or debris were the best predictors of An. nili larval abundance. Whereas, An. moucheti and An. ovengensis were highly associated with lentic rivers, low temperature, having Pistia. An. nili and An. moucheti distribution along river systems across south Cameroon was highly correlated with environmental variables. The distribution of An. nili conforms to that of a generalist species which is adapted to exploiting a variety of environmental conditions, Whereas, An. moucheti, Anopheles ovengensis and Anopheles carnevalei appeared as specialist forest mosquitoes. specialized Anopheles Bionomic Cameroon Canonical correspondence analysis 052 112 3 270-276 2009 0001-706X https://www.documentation.ird.fr/hor/fdi:010048387 10.1016/j.actatropica.2009.08.009 0001-706X [F B010048387] https://www.documentation.ird.fr/hor/fdi:010048387 https://www.documentation.ird.fr/intranet/publi/2009/12/010048387.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2009-12-21 2017-08-23 fdi:010048387 fre