Sex pheromone of Egyptian cotton leafworm (Spodoptera littoralis)
- 105 Downloads
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
Unable to display preview. Download preview PDF.
- Henrick, C.A. 1977. The synthesis of insect sex pheromones.Tetrahedron 33:1845–1889.Google Scholar
- Nesbitt, B.F. 1978. A review of work on insect pheromones at the Tropical Products Institute.Trop. Sci. 20(1):1–10.Google Scholar
- Nesbitt, B.F., Beevor, P.S., Cole, R.A., Lester, R., andPoppi, R.G. 1973. Sex pheromones of two noctuid moths.Nature (London), New Biol. 244:208–209.Google Scholar
- Rossi, R. 1977. Insect pheromones; I. Synthesis of achiral components of insect pheromones.Synthesis 1977:817–836.Google Scholar
- Rossi, R. 1978. Insect pheromones; II. Synthesis of chiral components of insect pheromones.Synthesis 1978:413–434.Google Scholar
- Shani, A., andKlug, J.T. 1980. Photooxidation of (Z,E)-9,11-tetradecadienyl acetate, the main component of the sex pheromone of the female Egyptian cotton leafworm (Spodoptera littoralis).Tetrahedron Letters 21:1563–1564.Google Scholar
- Tamaki, Y., Noguchi, H., andYushima, T. 1973. Sex pheromone ofSpodoptera litura (F.) (Lepidoptera: Noctuidae): Isolation, identification and synthesis.Appl. Entomol. Zool. 8:200–203.Google Scholar
- Teich, I., Neumark, S., Jacobson, M., Klug, J.T., Shani, A., andWaters, R.M. 1979. Mass trapping of males of Egyptian cotton leafworm (Spodoptera littoralis) and large-scale synthesis of prodlure, pp. 343–350,in F.J. Ritter, (ed.). Chemical Ecology: Odour Communication in Animals. Elsevier/North-Holland Biomedical Press, Amsterdam.Google Scholar