Response of The Lacewing Chrysopa cognata to Pheromones of its Aphid Prey

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Abstract

The lacewing Chrysopa cognata, one of the principal predators of aphids in Korea, was tested for responses to the aphid sex pheromone components (4a S,7 S,7a R)-nepetalactone and (1 R,4a S,7 S,7a R)-nepetalactol and the aphid alarm pheromone (E)-β-farnesene. Electroantennogram responses were obtained to the sex pheromone components but not to (E)-β-farnesene. The sex pheromone components were attractive in a Y-tube olfactometer assay and in field trials with water traps, but no attraction was observed to (E)-β-farnesene.

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