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The relationship between the chemical composition of three essential oils and their insecticidal activity against Acanthoscelides obtectus (Say)
Author(s) -
Papachristos Dimitrios P,
Karamanoli Katerina I,
Stamopoulos Dimitrios C,
MenkissogluSpiroudi Urania
Publication year - 2004
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.798
Subject(s) - essential oil , rosmarinus , linalyl acetate , officinalis , chemical composition , lavandula , eucalyptus globulus , biology , composition (language) , limonene , botany , eucalyptol , chemistry , lavender , food science , eucalyptus , organic chemistry , linalool , linguistics , philosophy
The chemical composition of the essential oils isolated from various parts of three Greek aromatic plants ( Lavandula hybrida Rev, Rosmarinus officinalis L and Eucalyptus globulus Labill) collected at different seasons was determined by GC/MS analysis. The insecticidal action of these oils and of their main constituents on Acanthoscelides obtectus (Say) adults was evaluated and their LC 50 values were estimated. All essential oils tested exhibited strong activity against A obtectus adults, with varying LC 50 values depending on insect sex and the composition of the essential oils. A correlation between total oxygenated monoterpenoid content and activity was observed, with oxygenated compounds exhibiting higher activity than hydrocarbons. Among the main constituents, only linalyl and terpinyl acetate were not active against A obtectus , while all the others exhibited insecticidal activity against both male and female adults, with LC 50 values ranging from 0.8 to 47.1 mg litre −1 air. An attempt to correlate the insecticidal activity to the monoterpenoid's structure is presented, and the difference in sensitivity between male and female individuals is also explored. Copyright © 2004 Society of Chemical Industry