ORBi: Leroy Pascal - Biological control using Episyrphus balteatus (De Geer) (Diptera: Syrphidae)

Reference : Biological control using Episyrphus balteatus (De Geer) (Diptera: Syrphidae)


	Document type :	Scientific congresses and symposiums : Poster
	Discipline(s) :	Life sciences : Entomology & pest control
	To cite this reference:	http://hdl.handle.net/2268/93527

Title :	Biological control using Episyrphus balteatus (De Geer) (Diptera: Syrphidae)
Language :	English
Author, co-author :	Leroy, Pascal [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
	Verheggen, François [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
	Capella, Quentin [ > > ]
	Francis, Frédéric [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
	Haubruge, Eric [Université de Liège - ULg > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech >]
Publication date :	18-May-2010
Page number :	A0
On invitation :	No
Audience :	International
Event name :	International Symposium on Crop Protection
Event date :	18 mai 2010
Event place (city) :	Ghent
Event country :	Belgique
Keywords :	[en] Augmentative biocontrol ; Aphid ; Episyrphus balteatus ; Oviposition induction ; Semiochemicals
Abstract :	[en] Augmentative biocontrol constitutes a safe way to reduce pest populations through the enhancement of natural enemies’ activity. In this context, the aphidophagous syrphid Episyrphus baltetaus (De Geer) (Diptera: Syrphidae) is a promising candidate for aphid biological control: larvae of this syrphid attack and consume a wide range of aphid species and are found on many vegetable crops. Because natural populations of beneficials are not always sufficient to regulate the pest infestations, this work has focused on the conception of a biological control device containing syrphid eggs which can easily be introduced in fields or greenhouses. Using semiochemicals [E-(β)-farnesene, R-(+)-limonene and (Z)-3-hexenol], honeydews and “artificial honeydews” (10% or 30% aqueous solutions of sucrose, fructose and glucose), the syrphid oviposition was artificially induced on an inert surface. To test and validate the biological control device described above, laboratory and field experiments were performed: a plastic lamella covered with syrphid eggs was suspended on aphid infested plants in order to measure the efficiency of the device. The results obtained were promising since populations of 500 aphids were eliminated in ten days when 15 syrphid eggs were introduced. The use of such a biological control device could certainly contribute to aphid biological control strategies.
Funders :	Région wallonne
Name of the research project :	Solaphid
Target :	Researchers ; Professionals ; Students ; General public
Permalink :	http://hdl.handle.net/2268/93527

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