Effects of essential oil from leaves of <i>Eugenia sulcata</i>on the development of agricultural pest insects

Gonzalez, Marcelo S.; Lima, Barbara G.; Oliveira, Alyne F.R.; Nunes, Douglas D.; Fernandes, Caio P.; Santos, Marcelo G.; Tietbohl, Luis A.C.; Mello, Cicero B.; Rocha, Leandro; Feder, Denise

doi:10.1016/j.bjp.2014.05.001

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Original articles • Rev. bras. farmacogn. 24 (4) • Jul-Aug 2014 • https://doi.org/10.1016/j.bjp.2014.05.001 copy

Effects of essential oil from leaves of Eugenia sulcataon the development of agricultural pest insects

Authorship SCIMAGO INSTITUTIONS RANKINGS

Essential oils are known for their insect control potential, which is mainly attributed to the presence of terpenes that interfere with hormonal and physiological processes of arthropods. The aim of the present study was to evaluate the effects of essential oil from the leaves of Eugenia sulcata Spring ex Mart., Myrtaceae, on the development of two species of agricultural pest insects, Dysdercus peruvianus and Oncopeltus fasciatus.Results showed that the essential oil induced mortality, and reduced numbers of adults. Topical treatment of Oncopeltus fasciatus using pure essential oil caused significant mortality rates (96.67%), while Dysdercus peruvianus had a higher tolerance, with 80% mortality at the end of the experiments. Results suggest that essential oil from the leaves of Eugenia sulcata may be used in agriculture for insect pest control.

Essential oil; Oncopeltus fasciatus ; Dysdercus peruvianus ; Myrtaceae; Arthropods

Groups	% survival adult insects ± SD
Groups	10 DAT
Untreated	83.3 ± 15.3 ns
Control acetone	73.3 ± 11.5 ns
Pure essential oil	20.0 ± 17.3^a a p <0.0001;
500.0 mg/ml	20.0 ± 20.0^a a p <0.0001;
250.0 mg/ml	33.3 ± 5.8^a a p <0.0001;
125.0 mg/ml	46.7 ± 20.8^b b p < 0.001;
62.5 mg/ml	76.7 ± 15.3^c c p < 0.05; Percentage values of total insect (n = 10) was calculated in each group (in triplicates) from the beginning of experiment. Moulting period was scored with the sum of all insects from each triplicate and the range 10th day after the topical treatments.
31.2 mg/ml	80.0 ± 10.0^c c p < 0.05; Percentage values of total insect (n = 10) was calculated in each group (in triplicates) from the beginning of experiment. Moulting period was scored with the sum of all insects from each triplicate and the range 10th day after the topical treatments.

Groups	% survival adult insects ± SD
Groups	10 DAT
Untreated	96.66 ± 5.77 ns
Control acetone	93.33 ± 5.77 ns
Pure essential oil	3.33 ± 5.77^a a p < 0.0001;
500.0 mg/ml	3.33 ± 5.77^a a p < 0.0001;
250.0 mg/ml	6.67 ± 11.55^b
125.0 mg/ml	30.00 ± 17.32^a a p < 0.0001;
62.5 mg/ml	33.33 ± 15.33^a a p < 0.0001;
31.2 mg/ml	53.33 ± 5.77^a a p < 0.0001;

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[1] *Corresponding author. E-mail: lean@vm.uff.br (L. Rocha).