Bioactivity of essential oils from Artemisia against Diaphania hyalinata and its selectivity to beneficial insects

  • Paula Tatiana Lopes Seixas Federal University of Viçosa; Chemistry Dept
  • Antonio Jacinto Demuner Federal University of Viçosa; Chemistry Dept
  • Elson Santiago Alvarenga Federal University of Viçosa; Chemistry Dept
  • Luiz Claudio Almeida Barbosa Federal University of Minas Gerais; Chemistry Dept.
  • Ana Marques Federal University of Viçosa; Entomology Dept.
  • Elizeu de Sá Farias Federal University of Viçosa; Entomology Dept.
  • Marcelo Coutinho Picanço Federal University of Viçosa; Entomology Dept.
Keywords: Solenopsis saevissima, Tetragonisca angustula, melonworm, insecticide

Abstract

The demand for effective insecticides in pest control with low toxicity to the non-target organisms, such as natural enemies and pollinators, is increasing steadily. A good alternative for synthetic insecticides is natural compounds, including essential oils (EO). This work assessed toxicity of essential oils extracted from Artemisia annua, A. absinthium, A. camphorata, A. dracunculus and A. vulgaris against the melonworm Diaphania hyalinata (Linnaeus, 1758) (Lepidoptera: Crambidae) larvae, a pest of Cucurbitaceae, and their selectivity for fire ant Solenopsis saevissima (Smith) (Hymenoptera: Formicidae) and jataí bee Tetragonisca angustula (Latreille) (Meliponinae). The plants were grown in a greenhouse with mineral fertilization and were used for EO extraction. The insects in the bioassay belonged to the second instar of D. hyalinata and adult forms of S. saevissima and T. angustula. Essential oil from A. annua induced a high mortality rate in D. hyalinata (96 %) over a 48 h period. The same essential oil was selective for predator S. saevissima (42 % mortality) and pollinator T. angustula (74 % mortality), while causing high mortality in D. hyalinata. The insecticidal activity of A. annua oil was attributed to the synergism of its constituents viz., camphor and 1,8-cineole. Therefore, this essential oil contains constituents that are promising for effective use as insecticide due to its high toxicity and rapid action against D. hyalinata as well as low toxicity for predator and pollinator.

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Published
2018-12-01
How to Cite
Seixas, P., Demuner, A., Alvarenga, E., Barbosa, L., Marques, A., Farias, E., & Picanço, M. (2018). Bioactivity of essential oils from Artemisia against Diaphania hyalinata and its selectivity to beneficial insects. Scientia Agricola, 75(6), 519-525. https://doi.org/10.1590/1678-992x-2016-0461
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