ORBi: Verheggen François - Microorganisms from aphid honeydew attract natural enemies and tending ants

Reference : Microorganisms from aphid honeydew attract natural enemies and tending ants


	Document type :	Scientific congresses and symposiums : Unpublished conference
	Discipline(s) :	Life sciences : Microbiology Life sciences : Environmental sciences & ecology Life sciences : Entomology & pest control
	To cite this reference:	http://hdl.handle.net/2268/100252

Title :	Microorganisms from aphid honeydew attract natural enemies and tending ants
Language :	English
Author, co-author :	Verheggen, François [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
	Leroy, Pascal [ > > ]
	Fischer, Christophe [Université de Liège - ULg > Chimie et bio-industries > Chimie analytique >]
	Sabri, Ahmed [Université de Liège - ULg > > Centre Wallon de biologie industrielle >]
	Francis, Frédéric [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
	Heuskin, Stéphanie [Université de Liège - ULg > Chimie et bio-industries > Chimie analytique >]
	Thonart, Philippe [Université de Liège - ULg > Département des sciences de la vie > Biochimie et microbiologie industrielles >]
	Felton, Gary [ > > ]
	Detrain, Claire [ > > ]
	Lognay, Georges [Université de Liège - ULg > Chimie et bio-industries > Chimie analytique >]
	Haubruge, Eric [Université de Liège - ULg > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech >]
Publication date :	Aug-2011
Peer reviewed :	Yes
On invitation :	No
Audience :	International
Event name :	27th Annual meeting of the International Society of Chemical Ecology
Event date :	du 28 juillet au 4 août 2011
Event organizer :	Simon Fraser University
Event place (city) :	Vancouver (Burnaby)
Event country :	Canada
Abstract :	[en] Aphids are some of the most serious pests of cultivated crops worldwide, causing major yield and economic losses. Previous works have demonstrated ants and natural enemies (including ladybeetles and hoverflies) to be able to use aphid volatile chemicals to locate aphid colonies. Here, we report the first isolation of a bacterium from the pea aphid Acyrthosiphon pisum honeydew, Staphylococcus sciuri, which produces kairomones used by the aphidophagous hoverfly Episyrphus balteatus and the Asian Ladybeetle Harmonia axyridis during their search for prey colonies. Some specific semiochemicals produced by S. sciuri were identified as attractants and ovipositional stimulants. Similarly, we have shown scouts of the aphid tending ant species, Lasius niger, to orientate their foraging behaviour toward an Aphis fabae infested plant and we have demonstrated that the odours released by this aphid honeydew were attractive for ant scouts. Again, bacteria were involved in the production of these honeydew semiochemicals. Interestingly, ant scouts were also able to discriminate honeydew odour from A. fabae (usually attended by L. niger) and A. pisum (unattendedby L. niger). Comparison of the volatile and bacteria composition of both aphid species honeydew were attended.
Permalink :	http://hdl.handle.net/2268/100252

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