Journal of Chemical Ecology

, Volume 30, Issue 3, pp 619–629 | Cite as

Host Plant Volatiles Synergize Response to Sex Pheromone in Codling Moth, Cydia pomonella

  • Zhihua Yang
  • Marie Bengtsson
  • Peter Witzgall


Plant volatile compounds synergize attraction of codling moth males Cydia pomonella to sex pheromone (E,E)-8,10-dodecadien-1-ol (codlemone). Several apple volatiles, known to elicit a strong antennal response, were tested in a wind tunnel. Two-component blends of 1 pg/min codlemone and 100 pg/min of either racemic linalool, (E)-β-farnesene, or (Z)-3-hexen-1-ol attracted significantly more males to the source than codlemone alone (60, 58, 56, and 37%, respectively). In comparison, a blend of codlemone and a known pheromone synergist, dodecanol, attracted 56% of the males tested. Blends of pheromone and plant volatiles in a 1:100 ratio attracted more males than 1:1 or 1:10,000 blends. Adding two or four of the most active plant compounds to codlemone did not enhance attraction over blends of codlemone plus single-plant compounds. Of the test compounds, only farnesol was attractive by itself; at a release rate of 10,000 pg/min, 16% of the males arrived at the source. However, attraction to a 1:10,000 blend of codlemone and farnesol (42%) was not significantly different from attraction to codlemone alone (37%). In contrast, a codlemone mimic, (E)-10-dodecadien-1-ol, which attracted 2% males by itself, had a strong antagonistic effect when blended in a 1:10,000 ratio with codlemone.

Sex pheromone kairomone synergism host plant volatile (E)-β-farnesene (±)-linalool (Z)-3-hexen-1-ol Malus Cydia pomonella Tortricidae Lepidoptera 


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Copyright information

© Plenum Publishing Corporation 2004

Authors and Affiliations

  • Zhihua Yang
    • 1
  • Marie Bengtsson
    • 1
  • Peter Witzgall
    • 1
  1. 1.Department of Crop ScienceSwedish University of Agricultural SciencesAlnarpSweden

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