Abstract
A two-component pheromone, (3S,6S,7R,10S)- and (3S,6S,7R,10R)-10,11-epoxy-1-bisabolen-3-ol (murgantiol), present in emissions from adult male harlequin bugs, Murgantia histrionica, is most attractive in field bioassays to adults and nymphs in the naturally occurring ratio of ca. 1.4:1. Each of the two individual synthetic stereoisomers is highly attractive to male and female adults and nymphs, but is more attractive in combination and when deployed with a harlequin bug host plant. Blends of 8 stereoisomers also are highly attractive, suggesting that isomers not found in the natural pheromone are not repellent. Deployment of an inexpensive non-stereospecific synthetic pheromone holds promise for efficient trapping and/or use in trap-crops for this important pest in North America.
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Acknowledgments
We are grateful to Matt Klein, Emily Hren, Evan Hoki, and Brennan Bathauer, who assisted with field trials, and to Fil Guzman and Shyam Shirali, who prepared pheromones and lures. Thanks to the BARC-West Farm Crew -- Ted Currier, George Meyers, John Booma, and Stuart McMaster -- for planting and maintaining the experimental fields.
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Mention of commercial products is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the United States Department of Agriculture.
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Supplementary Information: Figures S1 (photographs of traps and trap plants), S2 (diagrams of 2-way and 7-way field choice arenas), and text describing lure preparation and loading.
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Weber, D.C., Cabrera Walsh, G., DiMeglio, A.S. et al. Attractiveness of Harlequin Bug, Murgantia histrionica, Aggregation Pheromone: Field Response to Isomers, Ratios, and Dose. J Chem Ecol 40, 1251–1259 (2014). https://doi.org/10.1007/s10886-014-0519-9
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DOI: https://doi.org/10.1007/s10886-014-0519-9
Keywords
- Murgantiol
- Trap plant
- Pheromone trap
- (3S,6S,7R,10S)-10,11-epoxy-1-bisabolen-3-ol, (3S,6S,7R,10R)-10,11-epoxy-1-bisabolen-3-ol
- (1S,4S)-4-((R)-4-((S)-3,3-dimethyloxiran-2-yl)butan-2-yl)-1-methylcyclohex-2-enol
- (1S,4S)-4-((R)-4-((R)-3,3-dimethyloxiran-2-yl)butan-2-yl)-1-methylcyclohex-2-enol, Hemiptera, Pentatomidae, insect pest, pest management