Abstract
Electroantenographical (EAG) response to allyl cinnamate were assessed on virgin and mated Cydia pomonella and Lobesia botrana adults to determine whether this compound could be used within integrated management programs (IMP). Adult behavioral reaction was later assessed in a wind tunnel, with and without the main compound of the corresponding female sex pheromone. Allyl cinnamate elicited antennae responses of C. pomonella and L. botrana, both males and females. Allyl cinnamate EAG response was as high as pheromone response, and it was not reduced after mating. In wind tunnel assays, allyl ester itself was not attractive to C. pomonella males, but its presence did not interfere with the pheromonal action when the number of contacts was compared. For females, a higher proportion of codling moths moved towards the source when allyl cinnamate was in the wind-tunnel plume. No differences were recorded depending on the mating status of codling moth adults. The same trend was observed in L. botrana males and females. Results suggest that allyl cinnamate acts as a female behavioral modifier, but more assays are required to determine its role in insect communication in field conditions before inclusion in integrated pest management.
Highlights
Cydia pomonella (L.) and Lobesia botrana (Dennis and Schiffermüller) (Lepidoptera: Tortricidae) are key pests in pome, pear and walnut orchards, and in vineyards, respectively [1]
This paper describes for the first time the capacity of allyl cinnamate to elicit antennal response and to modify behavior from C. pomonella and L. botrana adults
Allyl ester intrinsic activity: Allyl cinnamate elicited virgin C. pomonella female antenna and EAG responses as great as the one produced by codlemone
Summary
Cydia pomonella (L.) (codling moth) and Lobesia botrana (Dennis and Schiffermüller) (grapevine moth) (Lepidoptera: Tortricidae) are key pests in pome, pear and walnut orchards, and in vineyards, respectively [1]. Both species are pests of high-value crops and have low tolerance thresholds, leading to repeated insecticide treatments (with or without other pest control interventions) during the season. Other techniques based on the use of sex pheromones (mass-trapping and, attract and kill) are available, but less used [9] All these techniques focus in male moth control, but is described an effect in female behavior by exposure to its own sex pheromone [10,11]
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