Composition and acaricidal activity of Lippia sidoides essential oil against two-spotted spider mite ( Tetranychus urticae Koch)

The essential oils from accessions of Lippia sidoides Cham. (Verbenaceae) were characterized by GC and GC/MS and investigated for their acaricidal activity against the two-spotted spider mite ( Tetranychus urticae Koch). Twenty-nine compounds were identified with potential acaricidal activity. Glass...

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Bibliographic Details
Published in:Bioresource technology 2010, Vol.101 (2), p.829-832
Main Authors: Cavalcanti, S.C.H., Niculau, E. dos S., Blank, A.F., Câmara, C.A.G., Araújo, I.N., Alves, P.B.
Format: Article
Language:English
Subjects:
Acaricidal
acaricidal properties
Acaricides - chemistry
Acaricides - pharmacology
Animals
Araneae
beta-caryophyllene
bioassays
Biological and medical sciences
Canavalia ensiformis
carvacrol
chemical composition
Essential oil
essential oils
Female
Fundamental and applied biological sciences. Psychology
gas chromatography
Gas Chromatography-Mass Spectrometry
lethal concentration 50
Lippia
Lippia - chemistry
Lippia sidoides
mass spectrometry
mite control
monoterpenoids
Oils, Volatile - chemistry
Oils, Volatile - pharmacology
plant pests
sesquiterpenoids
Spider mite
synergism
Tetranychidae
Tetranychus urticae
thymol
Verbenaceae
volatile organic compounds
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Summary:The essential oils from accessions of Lippia sidoides Cham. (Verbenaceae) were characterized by GC and GC/MS and investigated for their acaricidal activity against the two-spotted spider mite ( Tetranychus urticae Koch). Twenty-nine compounds were identified with potential acaricidal activity. Glass receptacles were used as test chambers. For each dose and exposure time combination, three replicates were used. Each replicate consisted of 30 adult females of T. urticae, 10 mites in each leaf disk of Canavalia ensiformis placed in a Petri dish. Increasing amounts of oil or terpene were applied on a blotting paper strip, fixed on the inner surface of the glass recipient cover, corresponding to 2, 4, 6, 8, and 10 μL/L of air, respectively. Exposure periods were 24, 48, and 72 h. Data obtained in these experiments were submitted to probit analysis. The essential oil of L. sidoides, thymol and carvacrol exhibited potent acaricidal activity against T. urticae.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2009.08.053