RELATION ENTRE FACTEURS ENVIRONNEMENTAUX ET DENSITES LARVAIRES DE Culex pipiens L. 1758 (DIPTERA-CULICIDAE) DANS LA REGION D'OUM EL BOUAGHI (HAUTE PLAINE DE L'EST ALGERIEN)

Abstract

The lack of information on larval breeding, is often one of the elements of failure for the fight against mosquitoes, this study relates to physicochemical analysis of the larval deposits and inventory of culicidian species in seven different lodgings (2 natural and 4artificels ) located in the wilaya of Oum El Bouaghi during the year 2014-2015. Culex pipiens, a widespread species and it is ubiquitous especially in urban areas where it is considered troublesome. Our results show that Culex pipiens larval abundances are mainly correlated with the salinity of breeding sites and supporting mineral and organic pollution and can colonize low oxygen environments. The principal component statistical analysis (PCA) made it possible to establish affinities between the three inventoried species and the physicochemical characteristics of the waters of the cottages. However, these findings must be taken into account in the planning of mosquito eradication campaigns