Journal of Chemical Ecology

, Volume 6, Issue 5, pp 875–881 | Cite as

Sex pheromone of Egyptian cotton leafworm (Spodoptera littoralis)

Its chemical transformations under field conditions
  • A. Shani
  • J. T. Klug


Samples of pheromone carriers, after use for 4–5 weeks in traps in the field, were analyzed. Partial isomerization of prodlure, (Z,E)-9,11-tetradecadienyl acetate (TDDA), the main component of the sex pheromone of femaleSpodoptera littoralis, took place. All three other possible isomers were formed to yield a mixture of ∼50% (Z,E)-9,11 -TDDA, ∼30% (E,E)-9,11-, ∼13% (E,Z)-9,11-, and ∼7% (Z,Z)-9,11 isomer. The process was found to be photochemically induced; none of these isomers was found under heating alone. Most of the pheromone, however, decomposed under field conditions.

Key words

(Z,E)-9,11-Tetradecadienyl acetate prodlure Egyptian cotton leafworm Spodoptera littoralis photoisomerization sex pheromone mass trapping 


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Copyright information

© Plenum Publishing Corporation 1980

Authors and Affiliations

  • A. Shani
    • 1
  • J. T. Klug
    • 1
  1. 1.Department of Chemistry and Applied Research InstituteBen-Gurion University of the NegevBeer-ShevaIsrael

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