Comparative study of some parameters biological of Bactrocera dorsalis and Ceratitis cosyra (Diptera :Tephritidae) pests of mango (Mangifera indica) in Co´te d Ivoire

Abstract

Bactrocera dorsalis and Ceratitis cosyra are the major pests of mango (Mangifera indica), in Cote d'Ivoire. The study of biological parameters of these pests has revealed that the development of B. dorsalis is higher than that of C. cosyra in the three agro-ecological areas. The experiments were performed in semi-natural conditions in the orchard and in the conditions of ambient laboratory environment. A specific breeding B. dorsalis and C. cosyra been taken. The duration of the life cycle of B. dorsalis are shorter (20.93 days in the South, 18.67 days and 17.93 days in the center and north respectively) than C. cosyra (22.53 days in the south, 20.2 days in the center and 19.5 days in the north). The male development time was shorter than this of females, as in B. dorsalis in C. cosyra. The number of eggs laid by the female of B. dorsalis (269 in the south, 347 in the center and north) was higher than this of the female of C. cosyra (186 in the south, 196 in the center, 197 in the north). Longest life was recorded in adult B. dorsalis. Adult males have lived longer than adult females, in both species. The study on the biology of these two fruit flies showed that B. dorsalis is a serious pest in all the views of the various parameters studied. These results allow a better determination of the periods and means of intervention in the control against B. dorsalis and C. cosyra.