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New Zealand Plant Protection 66 (2013): 377

Behavioural responses of Cydia succedana to plant volatiles

N.J. Sullivan, L.M. Manning and K.C. Park


The gorse pod moth, Cydia succedana, was released in New Zealand from Europe in 1992 as a biological control for gorse (Ulex europaeus). In this study, the behavioural responses of the moth to lures containing different blends of plant volatiles identified from their host plants and through singlesensillum recordings were tested in a field trial at Chaney's Forest, Canterbury. Volatiles were placed on cotton wicks, with or without the female sex pheromone of C. succedana, on rubber septa in delta traps. Two different blends elicited behavioural responses, indicated by trap catches. Cydia succedana catches with the four-component "Blend 6"+pheromone lure were lower than with the pheromone alone. The 10-component "Blend 4" lure caught more C. succedana than any other blend when tested without the pheromone. These results indicate the behavioural significance of host- and non-host plant volatiles, and the relationship between the behaviourally active compounds and the profile of olfactory receptor neurons in C. succedana.

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