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J Chem Ecol

Title:		Efficacy and mechanisms of communication disruption of the red clover casebearer moth (Coleophora deauratella) with complete and partial pheromone formulations
Author(s):		Mori BA; Evenden ML;
Address:		"Department of Biological Sciences, CW405 Biological Sciences Building, University of Alberta, Edmonton, AB, Canada, T6G 2E9, bmori@ualberta.ca"
Journal Title:		J Chem Ecol
Year:		2014
Volume:		20140611
Issue:		6
Page Number:		577 - 589
DOI:		10.1007/s10886-014-0461-x
ISSN/ISBN:		1573-1561 (Electronic) 0098-0331 (Linking)
Abstract:		"The red clover casebearer, Coleophora deauratella Leinig and Zeller (Lepidoptera: Coleophoridae), is a major pest of red clover (Trifolium pratense L.) grown for seed in Canada and parts of Europe. Insecticides are ineffective against C. deauratella, and other control methods, such as pheromone-mediated mating disruption, need to be explored. The efficacy and mechanisms of communication disruption were evaluated in small-plot trials (0.25 ha) with reservoir-type rope dispensers loaded with either the complete pheromone blend [10:1 ratio of (Z)-7-dodecenyl acetate: (Z)-5-dodecenyl acetate] or the major component alone [(Z)-7-dodecenyl acetate]. Both formulations reduced catches of male C. deauratella in pheromone traps (>99.6 %). In pheromone-treated plots, more males were caught on yellow sticky cards near dispensers that released the complete pheromone blend, than on cards near dispensers releasing the major component. In the laboratory, after pre-exposure to either the complete blend or the major component for 1 h, male C. deauratella antennae became adapted, as measured by electroantennograms conducted 5 min. after treatment. Adaptation due to pre-exposure to either formulation resulted in a shift in the pheromone response threshold; antennae from pre-exposed moths responded more strongly to high pheromone dosages (5-50 mug) than did antennae from untreated control moths. Antennae from moths held in clean air for 24 h after pre-exposure recovered and responded similarly to pheromone as antennae from control moths. These results suggest that both formulations have the potential to disrupt pheromone communication in C. Deauratella, but that the disruption mechanisms of the two formulations likely differ"
Keywords:		"Acetates/chemistry/pharmacology Adaptation, Physiological *Animal Communication Animals Arthropod Antennae/drug effects Dose-Response Relationship, Drug Female Male Moths/*physiology Pheromones Sex Attractants/administration & dosage/chemistry/*pharmacolo;"
Notes:		"MedlineMori, Boyd A Evenden, Maya L eng Research Support, Non-U.S. Gov't 2014/07/11 J Chem Ecol. 2014 Jun; 40(6):577-89. doi: 10.1007/s10886-014-0461-x. Epub 2014 Jun 11"