author(s)
Mamadou Lo, Toffène Diome, Cheikh Thiaw and Mbacké Sembène

abstract
Originating in Africa, millet constitutes with sorghum the basis of food crops in Sahelian countries. Millet and sorghum represent a resistance challenge because, cultivated in population, they have strong capacities of adaption in extreme conditions. The study aims to determine the effect of agro-ecological zones on the biological parameters of Corcyra cephalonica (Stainton). Thus, millet samples were taken from a public store in the groundnut basin center and in the Senegal River delta on stocks. They were placed in rearing jars until adult emergence. The eggs collected from the latter had been used to carry out the necessary controls on biological parameters between agro-ecological zones. The results showed a non-significant agro-ecological zone effect on egg incubation time but which were higher in absolute values in C. cephalonica populations from the groundnut basin centre. The total number of eggs laid and the percentage of egg hatch were higher in populations from the Senegal River delta. However, this study also revealed a significantly different zone effect on the size, number of eggs laid and different development durations of the insect.