Abstract
The assessment of sublethal and lethal effects of insecticides on pests allows obtaining furth er insight of their efficacy, In this way, the pest feed ing pattem is a re levant toxicological endpoint to analyze the effectiveness of insecticides on phytophagous insects, due to insecticides that interfere with the normal feed ing behav ior of a pest contributing to its populati on management The obj ective of the present study was evaluating the effects of endosulfan, cypermethrin, spinosad and methoxyfenozide on feeding pattem of Rachiplusia nu, a potential pest in severa! crops but mainly in soybean, using laboratory choice test (Centro de Investi gac iones del Medio Ambi ente (CIMA) La Plata, Argentin a), Additionall y, the larval survival was also assessed, Cypermeth rin and spinosad induced antifeedant effects on exposed larvae, Endosul fan did not cause significant effects, while larvae exposed to methoxyfenozide showed preference towards the treated leaves, Biorational insecticides showed higher mortality to R. nu control than conventional ones, These new insights contribute with knowledge for redefining effective pest control strategies.
Get full access to this article
View all access options for this article.
