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PLoS One

Title:		Divergence in olfactory host plant preference in D. mojavensis in response to cactus host use
Author(s):		Date P; Dweck HK; Stensmyr MC; Shann J; Hansson BS; Rollmann SM;
Address:		"Department of Biological Sciences, University of Cincinnati, Cincinnati, Ohio, United States of America"
Journal Title:		PLoS One
Year:		2013
Volume:		20130725
Issue:		7
Page Number:		e70027 -
DOI:		10.1371/journal.pone.0070027
ISSN/ISBN:		1932-6203 (Electronic) 1932-6203 (Linking)
Abstract:		"Divergence in host adaptive traits has been well studied from an ecological and evolutionary perspective, but identification of the proximate mechanisms underlying such divergence is less well understood. Behavioral preferences for host plants are often mediated by olfaction and shifts in preference may be accompanied by changes in the olfactory system. In this study, we examine the evolution of host plant preferences in cactophilic Drosophila mojavensis that feeds and breeds on different cacti throughout its range. We show divergence in electrophysiological responses and olfactory behavior among populations with host plant shifts. Specifically, significant divergence was observed in the Mojave Desert population that specializes on barrel cactus. Differences were observed in electrophysiological responses of the olfactory organs and in behavioral responses to barrel cactus volatiles. Together our results suggest that the peripheral nervous system has changed in response to different ecological environments and that these changes likely contribute to divergence among D. mojavensis populations"
Keywords:		Action Potentials/*physiology Animals Biological Evolution Cactaceae/*chemistry/growth & development Desert Climate Drosophila/*physiology Feeding Behavior/physiology Odorants Olfactory Perception/*physiology Peripheral Nervous System/growth & development;
Notes:		"MedlineDate, Priya Dweck, Hany K M Stensmyr, Marcus C Shann, Jodi Hansson, Bill S Rollmann, Stephanie M eng R01 GM080592/GM/NIGMS NIH HHS/ GM080592/GM/NIGMS NIH HHS/ Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't 2013/08/13 PLoS One. 2013 Jul 25; 8(7):e70027. doi: 10.1371/journal.pone.0070027. Print 2013"