Monday, 27 October 2003 - 9:36 AM
0316

This presentation is part of : Ten-Minute Papers, Section F. Crop Protection Entomology

Female Cydia molesta response to plant volatiles

Silvia Dorn, Davide Natale, and Letizia Mattiacci. ETH (Swiss Federal Institute of Technology), Institute of Plant Sciences, Applied Entomology, Clausiusstrasse 25 / NW, Zurich, Switzerland

Peach shoot volatiles were attractive to mated female oriental fruit moth, Cydia molesta (Busck), in a dual choice arena. Twenty-two compounds were identified in headspace volatiles of peach shoots using gas chromatography-mass spectrometry. A bioassay-assisted fractionation using different sorbent polymers indicated an attractant effect of compounds with a chain length of 6-8 carbon atoms. The major compounds of this fraction were tested either singly or in combinations for behavioural response of females. Significant bioactivity was found for a synthetic three-component mixture which elicited a similar attractant effect as the full natural blend from peach shoots as well as the bioactive fraction.

Species 1: Lepidoptera Tortricidae Cydia molesta (Oriental Fruit Moth)
Keywords: plant-insect interactions, attractant

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