Susceptibility of the salvinia biological control agent Cyrtobagous salviniae (Coleoptera: Curculionidae) to chemicals used to control tsetse fly (Glossina morsitans (Diptera: Glossinidae)) in Botswana

aquatic weeds auxiliaire de lutte biologique biological control biological control organisms botswana curculionidae deltamethrin endosulfan enemigos naturales ennemi naturel glossina morsitans insecticidas insecticide insecticides lutte biologique mauvaise herbe aquatique natural enemies salvinia salvinia molesta synthetic pyrethrins toxicidad toxicity