The diamondback moth, Plutella xylostella L., is a significant lepidopteran pest of brassicas, posing a major threat to vegetable production in West Africa. This highly prolific, mobile, and adaptive species can cause up to 100% yield loss, particularly in intensive production systems lacking crop rotation. Larval feeding damages leaf tissue, reducing the marketability of crops and jeopardizing food security. Economically, control costs and financial losses are substantial, with global estimates exceeding $4 billion. In West Africa, producers heavily rely on chemical insecticides, leading to increased resistance, environmental pollution, and health risks. Despite research efforts, managing P. xylostella remains challenging due to the rapid development of resistance and the limited availability of viable alternatives. Various control strategies have been studied, including Chemical control, Biological control, Cultural practices and Integrated Pest Management (IPM). New avenues for research include biotechnology (RNAi, RIDL), varietal selection, digital forecasting tools, and participatory research involving producers. The review concludes that only an integrated agroecological approach combining scientific innovation, local knowledge, and institutional support-will enable sustainable control of P. xylostella in West Africa while preserving human health, the environment, and the profitability of the vegetable sector.
Bruchidius atrolineatus (Coleoptera-Bruchinae) est un ravageur important du niébé dans les champs et dans les stocks. Des individus mâles appartenant à des populations de cette bruche du niébé obtenus des graines des graines de la taille différente ont été comparées au moyen d‘une analyse factorielle discriminante (AFD) portant sur 17 variables morphologiques. La taille moyenne de chaque variété a été mesurée. L’analyse des données montre que les individus issus des graines de grandes tailles sont plus grands que ceux issus de petite taille. Ceux issus des graines de petite taille se caractérisent par la distance minimale entre les yeux ventralement (dvy) et de la plus grande dimension du tibia 3 (Lt3). Les individus mâles issus de graines de grande taille se distinguent par la longueur de l’antenne (Lan), la distance minimale entre les yeux dorsalement (Lmf), de la longueur maximale de tête (Lmt), de la largeur du pronotum au centre (Lap), de la plus grande dimension de la fémur 3 (Lf3), la longueur maximale de la cellule radiale de l’aile postérieure (Loc), de la longueur de l’élytre (Loe), la plus grande dimension du coxa 3 (Lmc), la longueur du premier sternite abdominale (Los), de la largeur du premier sternite abdominal (Las) la longueur (Lpy) et largeur (lpy) du pygidium (Figures 3 et 4). L’examen de la valeur de F montre que les variables possédant globalement le plus fort pouvoir discriminant sont par ordre de F décroissant: Lap (F=1007,33), Lmf (F=273,94), Lmt (F=159,38), Las (F=123,25), Lf3 (F=74,14), Lmc (F=47,41), Loe (F=43,03), Lpy (F=24,50), Lt3 (F=28,36), Lan (F=26,71), dvy (F=25,35), lpy (F=24,50), Loc (F=16,82), Los (F=9,28).
Study on three varieties of Cowpea to characterize the population of B. atrolineatus is performed. Fertility analysis shows that the local variety is more sensitive (64, 05
In Sahel, Callosobruchus maculatus (F.) (Coleoptera: Bruchinae) is one of the most fearsome pest of Cowpea (Vigna unguiculata Walp). To effectively combat this pest, many authors have advocated leaves Boscia senegalensis, plant commonly used by African producers in the protection of stored products. In this study, the factors that may influence the insecticidal activity of this insecticide plant in the Cowpea storage structures were examined. It is the effect of an increase in the mass of stored seeds, the effect of an increase in the numbers of insects and the effect of shelf life of broy