Dynamique des populations de Brevicoryne brassicae et de Aleyrodes proletella sur la culture du chou-fleur dans la région de Mazagran (Wilaya de Mostaganem)

Abstract

The ecological and biological interest of the study of the dynamics and inventory of entomological fauna was highlighted by this modest work highlighting the great biodiversity reported in the cauliflower field studied on a private farm in the Mazagran region of Mostaganem. To carry out the population dynamics and inventory of the cauliflower insect fauna, we took weekly samples of cauliflower leaves in order to determine the temporary evolution of the two pest species and their natural enemy complex. The bioecology of the populations revealed a significant infestation of Brevicoryne brassicae and Aleyrodes proletella on cauliflower with rates in the range of 80% and 44% from the first day of sampling. In addition, the inventory of the insect fauna collected in the study area made it possible to identify different species belonging to different orders. Six taxonomic orders including Diptera, Coleoptera, Hemiptera, Hymenoptera and Lepidoptera were recorded.