Plant volatile compounds shorten reaction time and enhance attarction of the codling moth (Cydia pomonella) to codlemone

Schmera, Dénes and Guerin, P. M.. (2012) Plant volatile compounds shorten reaction time and enhance attarction of the codling moth (Cydia pomonella) to codlemone. Pest Management Science, 68 (3). pp. 454-461.

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BACKGROUND: The codling moth is the most serious pest of deciduous tree fruit (apples, pears, crabapples, walnuts, quince) worldwide. The high frequency of insecticide treatments per season has resulted in breakdown of codling moth control owing to insecticide resistance. As an alternative, integrated pest management includes mating disruption to achieve population suppression in orchards. Under this scheme, the sex pheromone of the codling moth, (E, E)-8,10-dodecadien-1-ol (codlemone), is released from dispensers in crops to hinder mating by luring males. Increasing the attractiveness of codlemone formulations to codling moth males can be regarded as a key to increasing the efficacy of mating disruption. With this aim, the effects of adding plant volatiles on the behavioural responses of codling moth males to codlemone were tested.
RESULTS: Adding R(+)-limonene, linalool, (E)-β-farnesene or ethyl (E, Z)-2,4-decadienoate to codlemone significantly increases the proportion of males flying to the pheromone source in a wind tunnel. The response level is equivalent to that of males responding to females releasing codlemone. Using real-time recordings, it is shown how these four plant products also shorten the response time of males to codlemone under the behavioural criteria time to activation, time till upwind flight is induced and time to pheromone source contact.
CONCLUSION: Shortening the response time and increasing source location by males of dispensers releasing codlemone with R(+)-limonene, linalool, (E)-β-farnesene or ethyl (E, Z)-2,4-decadienoate added would enhance mating disruption through better engagement of males with dispensers, to the detriment of females.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Integrative Biologie > Naturschutzbiologie (Baur)
UniBasel Contributors:Schmera, Dénes
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:19 Jan 2018 08:11
Deposited On:19 Jan 2018 08:11

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