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Environ Entomol


Title:Evaluating electrophysiological and behavioral responses to volatiles for improvement of odor-baited trap tree management of Conotrachelus nenuphar (Coleoptera: Curculionidae)
Author(s):Leskey TC; Hock V; Chouinard G; Cormier D; Leahy K; Cooley D; Tuttle A; Eaton A; Zhang A;
Address:"USDA-ARS, Appalachian Fruit Research Station, 2217 Wiltshire Rd., Kearneysville, WV 25430-2771, USA"
Journal Title:Environ Entomol
Year:2014
Volume:20140428
Issue:3
Page Number:753 - 761
DOI: 10.1603/EN13230
ISSN/ISBN:1938-2936 (Electronic) 0046-225X (Linking)
Abstract:"Plum curculio, Conotrachelus nenuphar (Herbst), one of the most important pests of apple in eastern and central North America, is usually managed in New England apple orchards by multiple full-block insecticide applications. Efforts to reduce insecticide inputs against plum curculio include using an 'attract and kill' approach: odor-baited trap trees deployed in the perimeter row of apple orchards. The standard approach is based on baiting apple trees with two olfactory stimuli, the fruit volatile benzaldehyde and the aggregation pheromone of plum curculio, grandisoic acid. We attempted to improve attraction, aggregation, and retention of adult plum curculios within specific baited trap tree canopies within apple orchards using an additional host plant volatile found to be highly stimulating in electroantennogram studies, trans-2-hexenal. We also attempted to increase aggregation using increased release rates of grandisoic acid. We found that trans-2-hexenal did not provide increased aggregation when deployed as an additional attractant within trap trees or when conversely deployed as a 'push' component or repellent in perimeter trees lateral to the baited trap tree. Although increasing the release rate of grandisoic acid 5x actually appeared to increase overall aggregation within trap trees, it was not significantly different than that obtained using the standard dose. Therefore, we believe that the standard olfactory stimuli are sufficient to provide aggregation within trap trees, but that other means should be used to manage them after their arrival"
Keywords:Aldehydes/pharmacology Animals Arthropod Antennae/drug effects/physiology Electrophysiological Phenomena Female *Insect Control Malus Massachusetts New Hampshire Pheromones/*pharmacology Trees Vermont Volatile Organic Compounds/*pharmacology Weevils/*drug;
Notes:"MedlineLeskey, Tracy C Hock, Virginia Chouinard, Gerald Cormier, Daniel Leahy, Kathleen Cooley, Daniel Tuttle, Arthur Eaton, Alan Zhang, Aijun eng Research Support, U.S. Gov't, Non-P.H.S. England 2014/05/02 Environ Entomol. 2014 Jun; 43(3):753-61. doi: 10.1603/EN13230. Epub 2014 Apr 28"

 
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