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Electroantennogram Responses of Nilaparvata lugens (Homoptera: Delphacidae) to Plant Volatile Compounds

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Electroantennogram (EAG) recordings were made from the plaque organ receptors of the rice brown plant hopper, Nilaparvata lugens (Stål). The receptors of the distal plaque organ of both male and female hoppers responded to the air from above chopped rice plants, and those of females gave a larger response. Female hoppers, tested with 27 plant volatiles, gave dose-related responses to 16 of the compounds, including a range of green leaf volatiles. The aliphatic aldehydes hexanal and (E)-2-hexenal elicited a larger response than a range of green leaf alcohols. Of the remaining compounds, acetophenone, benzaldehyde, ethyl and methyl benzoate, and amyl and isoamyl acetate were among the most effective in eliciting responses. Receptor recovery times showed some variation between compounds. A comparison of the dose-related response of 16 compounds in paraffin oil and in pentane showed that considerably larger responses were recorded when the highly volatile solvent pentane was used.

Keywords: electroantennogram; plant volatiles; rice hopper

Document Type: Research Article

DOI: http://dx.doi.org/10.1603/0022-0493-95.2.269

Publication date: April 1, 2002

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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