02563naa a2200169 a 450000100080000000500110000800800410001910000160006024500830007626000090015952019630016865300200213165300310215165300220218270000180220477301710222211257092016-11-10       2016    bl uuuu     u00u1 u    #d1 aHARO, M. M.  aUsing essential oils in the integrated pest management.h[electronic resource]  c2016  aThe secondary metabolites and volatile compounds produced by an aromatic plant may affect insect?s behavior, mainly interfering in the cellular signaling system. This technology can be used as an alternative to synthetic insecticide in the control of insect pests population. Objective: The aim of this study was to evaluate the repellency of tea tree (Melaleuca alternifolia Cheel) (Myrtaceae) essential oils for usage in integrated management programs. Material and Methods: Leaves were air dried (25 ?? 5??C for 24 hours) and essential oils were extracted by hydrodistillation for 2 hours in a Clevenger type system. Bioassays were conducted in ?X? type arenas, using adults of Sitophilus zeamais as a model and rice as stimuli. For treatment, a filter paper was placed into the chambers, with an aqueous solution of Tween 80 (1%) and essential oil of M. alternifolia (1%). For the control, the aqueous solution without essential oil was placed into the chamber. Fifty adults of S. zeamais were released in the system in each repetition (n = 6). The differences between the percentage of insects on control and treatment chambers were statistically analyzed by chisquare. Additionally, the spatial activity index was calculated aiming to infer about repellency or attracting activity of the essential oil. Results and Discussion: The adults of S. zeamais were significantly repelled by the ethanolic extract of M. alternifolia in the experiment (P &lt 0.001). Possibly, the presence of sesquiterpenes such as cymene, limonene, α-pinene and α-terpineol was responsible for the repellency registered. These compounds are toxic for many species of insects and commonly related as main components of tea tree essential oil. Conclusion: Our results suggest the potential use of M. alternifolia essential oils for insect pest management programs. A technical aspect related to the use of this plant in the field still deserves attention in the future.  aBioinsecticides  aIntegrated Pest Management  aStored grain pest1 aREBELO, A. M.  tIn: SIMP??SIO IBERO-AMERICANO DE PLANTAS MEDICINAIS, 8., SIMP??SIO IBERO-AMERICANO DE INVESTIGA????O EM C??NCER, 3., 2016, Univali. Resumos... Itaja??: Univali, 2016.