Spodoptera frugiperda (Noctuidae) fed on transgenic maize can transfer Bt proteins to Podisus nigrispinus (Pentatomidae)

An important concern with the use of genetically modified (GM) plants expressing Bacillus thuringiensis (Bt) insecticidal toxins is deleterious effect on non–target organisms. The predatory stink bug Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) used in biological control programs and may be exposed to Bt toxins. This study evaluated indirect effects different Cry proteins P. prey Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae), fed simple or pyramided maize genotypes. experiment was carried out a completely randomized design three treatments: i) Isohybrid (not Bt), ii) Herculex® (transgenic encoding Cry1F protein) iii) PowerCore® (pyramidal transgenic Cry1F, Cry1A.105, Cry2Ab2 proteins), which were feed S. for 48 h. caterpillars as by females. We presence proteins, consumed biomass (predation), oviposition period, number postures, eggs, eggs per posture, nymphs, egg viability, embryonic female longevity development, survival rates immature. results show that move through food chain provide evidence ingestion does not lead unexpected synergistic effects. However, promoted histopathological changes midgut cells nigrispinus.