ORBi: Fischer Christophe - Ant-aphid mutualism - How do ants locate aphid colonies?

Reference : Ant-aphid mutualism - How do ants locate aphid colonies?


	Document type :	Scientific congresses and symposiums : Poster
	Discipline(s) :	Life sciences : Environmental sciences & ecology Life sciences : Entomology & pest control
	To cite this reference:	http://hdl.handle.net/2268/99979

Title :	Ant-aphid mutualism - How do ants locate aphid colonies?
Language :	English
Alternative title :	[en] Le mutualisme fourmis-pucerons - Comment les fourmis localisent-elles les colonies de pucerons?
Author, co-author :	Fischer, Christophe [Université de Liège - ULg > Chimie et bio-industries > Analyse, qual. et risques - Labo. de Chimie analytique >]
	Sablon, Ludovic [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
	Duriaux, Adrien [Université de Liège - ULg > > > An. prépa. masters bioingénieur]
	Patris, Geoffrey [ > > ]
	Sautot, Lucile [ > > ]
	Haubruge, Eric [Université de Liège - ULg > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech >]
	Detrain, Claire [ > > ]
	Lognay, Georges [Université de Liège - ULg > Chimie et bio-industries > Analyse, qual. et risques - Labo. de Chimie analytique >]
	Verheggen, François [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Publication date :	Jun-2011
Peer reviewed :	Yes
On invitation :	No
Audience :	International
Event name :	Trends in natural products research
Event date :	du 12 au 15 juin 2011
Event organizer :	The Phytochemical Society of Europe
Event place (city) :	Kolymvari
Event country :	Greece
Keywords :	[en] aphid ; ant ; mutualism ; honeydew ; VOC
Abstract :	[en] That some ant species show mutualistic relationships with some aphid species is well known since several decades. Ants protect aphids against natural enemies and as a reward collect the sugar-rich aphid excretion called honeydew. However, very little information is available on possible semiochemicals involved in these interactions. This study aims to identify semiochemicals involved in the establishment of this relation, using both chemical and behavioral approaches. Preliminary choice tests confirmed that ant scouts are able to detect aphid colonies at a distance using volatile organic compounds (VOC). Those VOC influencing ant’s orientation may originate from different sources: the attacked plant, the honeydew produced by the aphids and the aphids themselves. VOC emission profiles of each of those potential sources have been established using gas chromatography. Y-olfactometer assay revealed that honeydew volatile compounds are the key element in this distant attraction. Moreover, based on these VOCs, ant scouts are able to discriminate between the honeydew produced by a myrmecophilous and a non myrmecophilous aphid species. Thus, more than just a sugar source, honeydew is an attractant for ant scouts towards myrmecophilous aphids.
Funders :	Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/99979

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