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J Insect Physiol

Title:		The role of contact chemoreception in the host location process of an egg parasitoid
Author(s):		Iacovone A; French AS; Tellier F; Cusumano A; Clement G; Gaertner C; Conti E; Salerno G; Marion-Poll F;
Address:		"Institut National de la Recherche Agronomique (INRA), UMR iEES-Paris, 78026 Versailles, France; Dipartimento di Scienze Agrarie Alimentari e Ambientali, Universita degli Studi di Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy. Electronic address: aiacovone13@gmail.com. Institut National de la Recherche Agronomique (INRA), UMR iEES-Paris, 78026 Versailles, France; AgroParisTech, Paris, France; Evolution, Genomes, Comportement & Ecologie, CNRS, IRD, Universite Paris-Sud, Universite Paris-Saclay, Gif-sur-Yvette, France. INRA, Institut Jean-Pierre Bourgin, UMR1318 Saclay Plant Sciences, Versailles 78026, France. Laboratory of Entomology, Wageningen University, Wageningen, The Netherlands; Dipartimento di Scienze Agrarie e Forestali, Universita degli Studi di Palermo, Italy. Dipartimento di Scienze Agrarie Alimentari e Ambientali, Universita degli Studi di Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy"
Journal Title:		J Insect Physiol
Year:		2016
Volume:		20160705
Issue:
Page Number:		63 - 75
DOI:		10.1016/j.jinsphys.2016.07.001
ISSN/ISBN:		1879-1611 (Electronic) 0022-1910 (Linking)
Abstract:		"Taste allows insects to detect palatable or toxic foods, identify a mate, and select appropriate oviposition sites. The gustatory system strongly contributes to the survival and reproductive success of many species, yet it is rarely studied in insect parasitoids. In order to locate and assess a host in which they will lay their eggs, female wasps actively search for chemical cues using their sensory organs present mainly on the antennae. In this paper, we studied the role of antennal taste sensilla chaetica in the perception of contact semiochemicals in Trissolcus brochymenae (Hymenoptera: Platygastridae), an egg parasitoid of the brassicaceae pest Murgantia histrionica (Heteroptera: Pentatomidae). Methanolic extracts obtained from male and female hosts elicited action potentials in taste neurons housed in antennal sensilla chaetica, indicating that these sensilla are involved in the perception of non volatile host kairomones. In behavioural assays, wasp females displayed an intense searching behaviour in open arenas treated with host extracts, thus confirming that these kairomones are soluble in polar solvents. We further investigated the extracts by Gas Chromatography-Mass Spectrometry (GC-MS) and found that they contain several compounds which are good candidates for these contact kairomones. This study contributes to better understanding contact chemoreception in egg parasitoids and identifying gustatory receptor neurons involved in the host location process"
Keywords:		Animals Appetitive Behavior Arthropod Antennae/*physiology Electrophysiological Phenomena Female Gas Chromatography-Mass Spectrometry Heteroptera/*parasitology *Host-Parasite Interactions Male *Oviposition *Taste Perception Wasps/*physiology Behaviour Ele;
Notes:		"MedlineIacovone, Alessia French, Alice Sarah Tellier, Frederique Cusumano, Antonino Clement, Gilles Gaertner, Cyril Conti, Eric Salerno, Gianandrea Marion-Poll, Frederic eng Research Support, Non-U.S. Gov't England 2016/07/10 J Insect Physiol. 2016 Aug-Sep; 91-92:63-75. doi: 10.1016/j.jinsphys.2016.07.001. Epub 2016 Jul 5"