Abstract

We studied the effect of codlemone geometric isomers (E,Z)-, (Z,E)-, and (Z,Z)-8,10-dodecadienol on sex attraction of male codling moth, Cydia pomonella (L.), in the field and in a wind tunnel. The use of an ultrasound evaporator made it possible to apply known rates of compound at defined isomeric purity. In the wind tunnel, 5, 20, and 100% addition of Z,E isomer to ( E,E )-8,10-dodecadienol (codlemone) slightly increased male flight response. However, field captures with these blends were not significantly different from codlemone alone. A 20 and 100% addition of E,Z isomer decreased male landings on the odor source in the wind tunnel and trap captures in the field; Z,Z had an antagonistic effect at 100%. The equilibrium isomer blend (100% E,E; 26% E,Z; 20% Z,E; 5% Z,Z) strongly reduced male attraction. The behavioral effect of isomerization of codlemone in dispenser materials used for mating disruption has to be taken into consideration.

Published in

Environmental Entomology
1998, Volume: 27, number: 5, pages: 1250-1254

SLU Authors

• Löfqvist, Jan

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

• Bengtsson, Marie

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

• Witzgall, Peter

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

UKÄ Subject classification

Zoology


Publication identifier

DOI: https://doi.org/10.1093/ee/27.5.1250

Permanent link to this page (URI)

https://res.slu.se/id/publ/110579