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Environ Entomol

Title:		Comparative Antennal and Behavioral Responses of Summer and Winter Morph Drosophila suzukii (Diptera: Drosophilidae) to Ecologically Relevant Volatiles
Author(s):		Kirkpatrick DM; Leach HL; Xu P; Dong K; Isaacs R; Gut LJ;
Address:		"Department of Entomology, Michigan State University, East Lansing, MI"
Journal Title:		Environ Entomol
Year:		2018
Volume:		47
Issue:		3
Page Number:		700 - 706
DOI:		10.1093/ee/nvy046
ISSN/ISBN:		1938-2936 (Electronic) 0046-225X (Linking)
Abstract:		"Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is a devastating global pest of berry crops and cherries. Little is understood about its biology during the winter in northern temperate regions, including potential resources that it may utilize during this period. In this study, olfactory and behavioral responses of female D. suzukii to six volatiles (methionol, acetic acid, linalool, bornyl acetate, isoamyl acetate, and geosmin) were evaluated separately for electroantennogram (EAG) and behavioral assays between summer and winter morphs. Results of EAG indicated that isoamyl acetate, acetic acid, and geosmin elicited significantly higher olfactory responses from the antennae of female summer morph D. suzukii compared with those of female winter morph D. suzukii. Winter morph D. suzukii showed reduced antennal response to the volatiles overall. Geosmin and bornyl acetate elicited significantly different behavioral responses from the two morphs in no-choice laboratory behavioral assays. T-maze behavioral assays with geosmin further revealed that summer morphs had a significant aversion, while winter morphs showed no significant aversion to geosmin. Overall, we demonstrate that responses of the two seasonally induced morphs to environmental stimuli are different, and future studies are justified to further understand how these physiological and behavioral differences may contribute to improved pest management of D. suzukii"
Keywords:		"Animals Arthropod Antennae/*physiology *Chemotaxis Choice Behavior Drosophila/*physiology/ultrastructure Microscopy, Electron, Scanning Odorants/*analysis Olfactory Receptor Neurons/ultrastructure Seasons Volatile Organic Compounds/*metabolism;"
Notes:		"MedlineKirkpatrick, Danielle M Leach, Heather L Xu, Peng Dong, Ke Isaacs, Rufus Gut, Larry J eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2018/04/19 Environ Entomol. 2018 Jun 6; 47(3):700-706. doi: 10.1093/ee/nvy046"