Sex pheromone of Egyptian cotton leafworm (Spodoptera littoralis) - Its chemical transformations under field conditions

A. Shani; J. T. Klug

doi:10.1007/BF00990471

Sex pheromone of Egyptian cotton leafworm (Spodoptera littoralis) - Its chemical transformations under field conditions

A. Shani, J. T. Klug

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

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 female Spodoptera 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.

Original language	English
Pages (from-to)	875-881
Number of pages	7
Journal	Journal of Chemical Ecology
Volume	6
Issue number	5
DOIs	https://doi.org/10.1007/BF00990471
State	Published - 1 Sep 1980

Keywords

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

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Biochemistry

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10.1007/BF00990471

Cite this

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title = "Sex pheromone of Egyptian cotton leafworm (Spodoptera littoralis) - Its chemical transformations under field conditions",

abstract = "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 female Spodoptera 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.",

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

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year = "1980",

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T1 - Sex pheromone of Egyptian cotton leafworm (Spodoptera littoralis) - Its chemical transformations under field conditions

AU - Shani, A.

AU - Klug, J. T.

PY - 1980/9/1

Y1 - 1980/9/1

N2 - 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 female Spodoptera 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.

AB - 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 female Spodoptera 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.

KW - (Z,E)-9,11-Tetradecadienyl acetate

KW - Egyptian cotton leafworm

KW - Spodoptera littoralis

KW - mass trapping

KW - photoisomerization

KW - prodlure

KW - sex pheromone

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Sex pheromone of Egyptian cotton leafworm (Spodoptera littoralis) - Its chemical transformations under field conditions

Abstract

Keywords

ASJC Scopus subject areas

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