Flight tunnel response of codling moth Cydia pomonella to blends of codlemone, codlemone antagonists and pear ester

Abstract

Upwind orientation flights of codling moth males Cydia pomonella L. to a single source of sex pheromone (E,E)-8,10-dodecadienol (codlemone) are significantly reduced when blending it with pheromone antagonists, either with codlemone acetate, (E,E)-8,10-dodecadienyl acetate, or with the codlemone isomer (E,Z)-8,10-dodecadienol. However, once activated by a pheromone stimulus, males no longer distinguish between a pheromone source and these antagonistic blend sources. This shows that the pheromone stimulus required for the initiation of an upwind flight response differs from the stimulus for maintaining upwind flight and landing at the source. In contrast to pheromone antagonists, males discriminate between pheromone alone and a blend source of pheromone and the plant volatile pear ester, ethyl (2E,4Z)-2,4-decadienoate. This indicates a difference in the detection and neural integration of pheromone and plant volatile stimuli.

Keywords

Anemotaxis; Cydia pomonella; kairomone; Lepidoptera; pear ester; plant volatile compounds; sex pheromone; Tortricidae; wind tunnel

Published in

Physiological Entomology
2010, volume: 35, number: 3, pages: 249-254
Publisher: WILEY-BLACKWELL PUBLISHING, INC

SLU Authors

• Trona, Federica

  • Department of Plant Protection Biology, Swedish University of Agricultural Sciences
    
  • IASMA Research and Innovation Centre

• Bengtsson, Marie

  • Department of Plant Protection Biology, Swedish University of Agricultural Sciences
    

• Witzgall, Peter

  • Department of Plant Protection Biology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Horticulture

Publication identifier

• DOI: https://doi.org/10.1111/j.1365-3032.2010.00737.x

Permanent link to this page (URI)

https://res.slu.se/id/publ/59793