Multiple component analysis showing relationship between early instar culex larvae (A), late instar culex larvae (B) densities and some physical characteristics of their breeding sites in Yaounde.

Legend1,2, 3, 4….: refer to breeding sites, Size = size of the breeding site, Predator = presence of predators, Density = the number of larvae in each breeding site, Pollution = presence of organic pollution; Anophelinae: presence of anophelinae larvae, Algae = presence of algae, House = distance of breeding sites to houses, Depth = the depth of the breeding site.