Enantiomers of (Z,Z)-6,9-Heneicosadien-11-OL: Sex Pheromone Components of Orgyia detrita |
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| Authors: | Regine Gries Grigori Khaskin Eugene Khaskin John L Foltz Paul W Schaefer Gerhard Gries |
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| Affiliation: | (1) Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada, V5A 1S6;(2) Department of Entomology & Nematology, University of Florida, Gainesville, Florida 32611-0620, USA;(3) United States Department of Agriculture, Agricultural Research Service, Beneficial Insects Introduction Research Laboratory, Newark, Delaware 19713, USA |
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| Abstract: | (6Z,9Z,11S)-6,9-Heneicosadien-11-ol (Z6Z9-11S-ol-C21) and (6Z,9Z,11R)-6,9-heneicosadien-11-ol (Z6Z9-11R-ol-C21) were identified as major sex pheromone components of female tussock moths, Orgyia detritaGuérin-Méneville (Lepidoptera: Lymantriidae), on the basis of (1) analyses of pheromone gland extracts of female O. detrita by coupled gas chromatographic-electroantennographic detection (GC-EAD) and GC mass spectrometry, and (2) field trapping experiments with synthetic standards. Z6Z9-11S-ol-C21 and Z6Z9-11R-ol-C21 in combination, but not singly, attracted significant numbers of male moths. Racemic Z6Z9-11-ol-C21 was more attractive than the 1:3.5 (R:S) blend ratio found in pheromone gland extracts from female moths. Lower and higher homologues of Z6Z9-11-ol-C21 were also detected in GC-EAD recordings of pheromone extracts, and the racemic compounds enhanced attractiveness of Z6Z9-11-ol-C21 in field experiments. Because of trace amounts of these homologues in extracts, their enantiomeric composition could not be determined. This is the first report of secondary alcohols as pheromone components in the ditrysian (advanced) Lepidoptera. |
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| Keywords: | Ditrysian Lepidoptera Lymantriidae Orgyia detrita sex pheromone (6Z 9Z 11S)-6 9-heneicosadien-11-ol (6Z 9Z 11R)-6 9-henei-cosadien-11-ol (6Z 9Z)-6 9-eicosadien-11-ol (6Z 9Z)-6 9-docosadien-11-ol |
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