Journal of Pest Science (2011) 84, 107-115

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Andrea Nesci, Analía Montemarani, María A. Passone and Miriam Etcheverry (2011)
Insecticidal activity of synthetic antioxidants, natural phytochemicals, and essential oils against an Aspergillus section Flavi vector (Oryzaephilus surinamensis L.) in microcosm
Journal of Pest Science 84 (1), 107-115
Abstract: The purpose of this study is to investigate the insecticidal activity of two benzoic acids 2(3)-tert-butyl-4 hydroxyanisole (BHA) and 2,6-di(tert-butyl)-p-cresol (BHT); two phenolic acids 3-phenyl-2-propenoic acid (CA) and trans-4-hydroxy-3-methoxycinnamic acid (FA); and two essential oils of Eugenia caryophyllata (clove tree) and Thymus vulgaris (thyme) against Oryzaephilus surinamensis (L.) vector carrier of aflatoxigenic fungi on stored peanut. The weight loss of peanut, susceptibility of insects, Aspergillus isolation frequency from insects and peanut, and aflatoxin B1 analyses from peanut were determined. BHA, BHT, and BHA/BHT mixture were highly effective against O. surinamensis, these chemical agents give 100% mortality at the doses assayed. Essential oil of thyme at 2,000 and 3,000 ppm were highly effective against O. surinamensis, these concentrations gave 100% mortality. No Aspergillus section Flavi contamination was observed in dead insects collected from peanut treated with BHA/BHT mixture. No differences were observed in the fresh weight of pods peanut among treatments with and without chemical agents. All samples of treated peanut pods showed complete inhibition of this toxin after 120 days of storage. Our results indicate that these substances could be evaluated further for the control of pest vectors of aflatoxigenic fungi of stored peanut.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Miriam G. Etcheverry

Research topic(s) for pests/diseases/weeds:
control - general
transmission/dispersal of plant diseases

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Oryzaephilus surinamensis Stored legumes
Oryzaephilus surinamensis Stored nuts
Aspergillus flavus (plant/storage disease) Stored legumes
Aspergillus flavus (plant/storage disease) Stored nuts
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