Attraction of pea mothCydia nigricana F. (Lepidoptera: Tortricidae) to female sex pheromone (E,E)-8,10-dodecadien-1-YL acetate, is inhibited by geometric isomers E,Z, Z,E, and Z,Z

Sammanfattning

Field attraction ofCydia nigricana males to synthetic female sex pheromone (E,E)-8,10-dodecadien-1-yl acetate, formulated on red rubber septa, declined continuously during two weeks. This was due to isomerization of (E,E)-8,10-dodecadien-1-yl acetate: eight days after application of purifiedE,E isomer, the proportion ofE,Z;Z,E; andZ,Z isomers in rubber septa aged in the laboratory was 4%; a 5% addition of any one of these isomers to fresh lures of (E,E)-8,10-dodecadien-1-yl acetate significantly reduced male attraction. Stereospecific syntheses of (E,Z)-, (Z,E)-, and (Z,Z)-8,10-dodecadien-1-yl acetate are described. The pheromone gland ofCydia nigricana contains 0.8 ng/female of (E,E)-8,10-dodecadien-1-yl acetate, accompanied by three monounsaturated acetates, (E)-9-dodecen-1-yl acetate, (Z)-5-tetradecen-1-yl acetate, and (Z)-7-tetradecen-1-yl acetate (0.1 ng/female each). These compounds did not augment male trap catch when added to (E,E)-8,10-dodecadien-1-yl acetate.

Publicerad i

Journal of Chemical Ecology
1993, volym: 19, sidor: 1917-1928

SLU författare

• Witzgall, Peter

  • Lunds Universitet

• Bengtsson, Marie

  • Institutionen för växtskyddsvetenskap, Sveriges lantbruksuniversitet
    

• Löfqvist, Jan

  • Institutionen för växtskyddsvetenskap, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Zoologi

Publikationens identifierare

• DOI: https://doi.org/10.1007/BF00983796

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/110593