Metabolic resistance to pyrethroids (Py) and organophosphates (Op) in Callosobruchus maculatus (fab.) (Coleoptera: Chrysomelidae: Bruchinae) a major pest of stored cowpeas in West Africa

Callosobruchus maculatus is the main pest of stored cowpeas in West Africa. To control this pest, chemicals are frequently used during post-harvest storage. In this study we assessed insecticide re...