Response of the European elm bark beetle,Scolytus multistriatus (Coleoptera: Scolytidae), to isomers and components of its pheromone |
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Authors: | G N Lanier W E Gore G T Pearce J W Peacock R M Silverstein |
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Affiliation: | (1) Department of Entomology, SUNY College of Environmental Science and Forestry, 13210 Syracuse, New York;(2) Department of Chemistry, SUNY College of Environmental Science and Forestry, 13210 Syracuse, New York;(3) U.S. Forest Service, Northeastern Forest Experiment Station, 43015 Delaware, Ohio |
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Abstract: | Laboratory bioassays (two methods) and field tests demonstrated synergistic action of the three components (–)-4-methyl-3-heptanol (I); (–)-2,4-dimethyl-5-ethyl-6,8-dioxabicylo3.2.1]octane (-multistriatin) (II); and (–)--cubebene (III)] of the pheromone bouquet ofScolytus multistriatus. Individually and in pairs the components were slightly attractive; I+II was clearly the most active doublet. Indirect evidence indicates that only one of the four enantiomers of I is active. Of the , , and isomers of II, only the is active. With the addition of compound I, slightly attractive extract from mated females became nearly as active as extract from virgin females. |
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Keywords: | Scolytus multistriatus bioassay aggregating pheromone isomers enantiomers 4-methyl-3-heptanol -multistriatin" target="_blank">gif" alt="agr" align="BASELINE" BORDER="0">-multistriatin -cubebene" target="_blank">gif" alt="agr" align="BASELINE" BORDER="0">-cubebene |
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