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J Comp Physiol A Neuroethol Sens Neural Behav Physiol

Title:		Experience-based behavioral and chemosensory changes in the generalist insect herbivore Helicoverpa armigera exposed to two deterrent plant chemicals
Author(s):		Zhou D; van Loon JJ; Wang CZ;
Address:		"Institute of Zoology, The Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, 100101, People's Republic of China"
Journal Title:		J Comp Physiol A Neuroethol Sens Neural Behav Physiol
Year:		2010
Volume:		20100713
Issue:		11
Page Number:		791 - 799
DOI:		10.1007/s00359-010-0558-9
ISSN/ISBN:		1432-1351 (Electronic) 0340-7594 (Print) 0340-7594 (Linking)
Abstract:		"Behavioral and electrophysiological responses of larvae of the polyphagous moth species Helicoverpa armigera to two plant-derived allelochemicals were studied, both in larvae that had been reared on a diet devoid of these compounds and in larvae previously exposed to these compounds. In dual-choice cotton leaf disk and pepper fruit disk arena assays, caterpillars reared on a normal artificial diet were strongly deterred by strychnine and strophanthin-K. However, caterpillars reared on an artificial diet containing strychnine were insensitive to strychnine and strophanthin-K. Similarly, caterpillars reared on an artificial diet containing strophanthin-K were also desensitized to both deterrent chemicals. Electrophysiological tests revealed that the deterrent-sensitive neurons in taste sensilla on the maxillae of caterpillars reared on each deterrent-containing diet displayed reduced sensitivity to the two chemicals compared with the caterpillars reared on normal diets. We conclude that the experience-dependent behavioral plasticity was partly based on the reduced sensitivity of taste receptor neurons and that the desensitization of taste receptor neurons contributed to the cross-habituation to the two chemicals"
Keywords:		"Animals Behavior, Animal/drug effects/physiology Electrophysiological Phenomena/drug effects/physiology Larva/drug effects/physiology Lepidoptera/*drug effects/*physiology Neuronal Plasticity/drug effects/physiology Pheromones/*pharmacology Sensory Recept;"
Notes:		"MedlineZhou, Dongsheng van Loon, Joop J A Wang, Chen-Zhu eng Research Support, Non-U.S. Gov't Germany 2010/07/14 J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2010 Nov; 196(11):791-9. doi: 10.1007/s00359-010-0558-9. Epub 2010 Jul 13"