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

Dénes Schmera, Patrick M. Guerin

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)454-461
Number of pages8
JournalPest Management Science
Volume68
Issue number3
DOIs
Publication statusPublished - Mar 1 2012

Keywords

  • Behaviour
  • Codlemone
  • Codling moth
  • Cydia pomonella
  • Mating disruption
  • Orchard
  • Orchard pest
  • Pest management
  • Pheromone
  • Plant volatile
  • Wind tunnel

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Insect Science

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