Acaricidal property of the essential oil from Lippia gracilis against Tetranychus urticae and a natural enemy, Neoseiulus californicus, under greenhouse conditions

Experimental & Applied Acarology
Flávia Souza BornMarcílio Martins de Moraes

Abstract

The essential oil from the leaves of Lippia gracilis was investigated for fumigant and residual activity against Tetranychus urticae (Acari: Tetranychidae) and Neoseiulus californicus (Acari: Phytoseiidae). The results were compared to eugenol, Ortus® and Azamax®, as positive controls. Gas chromatography (GC) and GC/mass spectrometry analysis enabled the identification of 28 compounds, accounting for 99.1 ± 0.6% of the essential oil. The major constituents were carvacrol (61%), p-cymene (11%) and thymol (11%). Mites were more susceptible to the oil in fumigant tests than in residual tests. Among the components, thymol and β-caryophyllene had the greatest fumigant and residual toxicity against T. urticae, respectively. The role of selected constituents (carvacrol, p-cymene, thymol, limonene, β-pinene, 1,8-cineole, terpinolene and β-caryophyllene) in the acaricidal properties of the L. gracilis essential oil is also discussed. Fumigant and residual effects of Lippia oil were more selective than eugenol with regard to a natural enemy of T. urticae, Neoseiulus californicus. Experiments under greenhouse conditions demonstrated greater toxicity of the Lippia oil in comparison to the positive control at 24, 48 and 72 h after treatment...Continue Reading

References

Oct 20, 2005·Fitoterapia·O D L PessoaT L G Lemos
Sep 29, 2007·Journal of Ethnopharmacology·Ulysses Paulino de AlbuquerqueJanaina Patrícia dos Santos
Sep 14, 2011·Annual Review of Entomology·Uri Gerson, Phyllis G Weintraub
Mar 15, 2012·Experimental & Applied Acarology·Mário J C AraújoCésar A Badji
Dec 3, 2014·Environment International·Christy A MorrisseyKarsten Liber
Aug 11, 2016·Anais Da Academia Brasileira De Ciências·Roberta C S Neves, Claudio A G da Camara

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Citations

Dec 1, 2019·Zeitschrift Für Naturforschung. C, a Journal of Biosciences·Radu Claudiu FierascuAlina Paunescu
May 5, 2021·Parasite : Journal De La Société Française De Parasitologie·Andrea DurofilTrinidad Ruiz-Téllez

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Software Mentioned

POLO
- PC
Ortus

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