| Title: | Behavioral Responses of Plum Curculio (Coleoptera: Curculionidae) to Different Enantiomer Concentrations and Blends of the Synthetic Aggregation Pheromone Grandisoic Acid |
| Author(s): | Hock V; Chouinard G; Lucas E; Cormier D; Leskey TC; Wright SE; Zhang A; Pichette A; |
| Address: | "Institut de recherche et de developpement en agroenvironnement (IRDA), Laboratoire de Production Fruitiere Integree, 335, chemin des Vingt-Cinq Est, Saint-Bruno-de-Montarville, QC J3V 0G7, Canada. Universite du Quebec a Montreal (UQAM), Departement des Sciences Biologiques, Laboratoire de lutte Biologique, Case postale 8888, succursale Centre-ville, Montreal (Quebec) H3C 3P8, Canada. vhbioresearch@gmail.com. Institut de recherche et de developpement en agroenvironnement (IRDA), Laboratoire de Production Fruitiere Integree, 335, chemin des Vingt-Cinq Est, Saint-Bruno-de-Montarville, QC J3V 0G7, Canada. Universite du Quebec a Montreal (UQAM), Departement des Sciences Biologiques, Laboratoire de lutte Biologique, Case postale 8888, succursale Centre-ville, Montreal (Quebec) H3C 3P8, Canada. United States Department of Agriculture (USDA), Agricultural Research Service - Appalachian Fruit Research Station (ARS-AFRS), 2217 Wiltshire Road, Kearneysville, WV 25430, USA. United States Department of Agriculture (USDA), Agricultural Research Service - Beltsville Agricultural Research Center, Invasive Insect Biocontrol and Behaviour Laboratory, 10300 Baltimore Avenue, Beltsville, MD 20705-2350, USA. Universite du Quebec a Chicoutimi (UQAC), Departement des sciences fondamentales, 555, boulevard de l'Universite, Chicoutimi (Quebec), G7H 2B1 Canada" |
| ISSN/ISBN: | 0022-0493 (Print) 0022-0493 (Linking) |
| Abstract: | "The plum curculio, Conotrachelus nenuphar (Herbst) (Coleoptera: Curculionidae), is an important pest of fruit in North America. Males produce an aggregation pheromone (grandisoic acid) that attracts both sexes of the northern univoltine and the southern multivoltine strains. Grandisoic acid ((1R,2S)-1-methyl-2-(1-methylethenyl)-cyclobutaneacetic acid) is a chiral molecule containing one chiral center. A synthetic racemic mixture will contain two optical isomers that are mirror images of each other with equal amounts of (+)- and (-)-enantiomeric isomers. Male plum curculio only produce the (+) enantiomer. Some enantiomers can have antagonistic effects on the attraction of weevils to pheromones. An understanding of the effect of both enantiomers on the behaviour of plum curculio is needed to develop more efficient trap baits. Behavioural bioassays were conducted in a dual-choice still-air vertical olfactometer using a quantity of 1.5 ml of both (+) and (-) synthetic enantiomers and the racemic mixture of grandisoic acid with live female responders to determine which concentration and enantiomeric purity is the most attractive and if there is an antagonistic effect of the unnatural (-) enantiomer. Results indicated that plum curculio were attracted to low concentrations of the (+) enantiomer at 72% enantiomeric excess, but that strains were attracted to different concentrations of the (+) enantiomer (2x10(-7) mg/ml for univoltine, 2x10(-9) mg/ml for multivoltine)" |
| Keywords: | "Animals *Behavior, Animal *Cyclobutanes Female *Pheromones Stereoisomerism *Weevils aggregation pheromone attractant odour olfactometer repellent;" |
| Notes: | "MedlineHock, Virginia Chouinard, Gerald Lucas, Eric Cormier, Daniel Leskey, Tracy C Wright, Starker E Zhang, Aijun Pichette, Andre eng Comparative Study Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2015/10/16 J Econ Entomol. 2015 Apr; 108(2):549-58. doi: 10.1093/jee/tov026. Epub 2015 Mar 15" |
