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Attractiveness of Harlequin Bug, Murgantia histrionica, Aggregation Pheromone: Field Response to Isomers, Ratios, and Dose
- Weber, Donald C., Cabrera Walsh, Guillermo, DiMeglio, Anthony S., Athanas, Michael M., Leskey, Tracy C., Khrimian, Ashot
- Journal of chemical ecology 2014 v.40 no.11-12 pp. 1251
- Murgantia histrionica, adults, aggregation pheromones, application rate, bioassays, dose response, females, host plants, imagos, insect attractants, males, nymphs, pests, plant-insect relations, stereoisomers, structure-activity relationships, synthetic hormones, trap crops, trapping, North America
- A two-component pheromone, (3S,6S,7R,10S)- and (3S,6S,7R,10R)-10,11-epoxy-1-isabolen-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.