Detection of Resistance in Lab and Field Collected Strains of Two Major Pests of Stored Grains against Deltamethrin and Phosphine

The resistance of the cowpea cv. BRS Xiquexique to infestation by cowpea weevil is related to the presence of toxic chitin-binding proteins

“…The attack by this bruchid causes nutritional and economic losses for the cowpea crop (Rees, 2007) because C. maculatus larvae develop inside the cotyledons, feeding on the nutritional reserves of these seeds (Beck and Blumer, 2011). Currently, available control methods against these storage insect pests are insecticides that present several disadvantages such as environmental contamination (Satya et al, 2016) and selection of resistant insects (Munawar et al, 2020). Therefore, development of new cowpea cultivars and discovery of resistant ones is a strategy to decrease pesticides use on stored grains (Togola et al, 2017).…”