ORBi: Leroy Pascal - Testing semiochemicals from aphid, plant and conspecific: attraction of Harmonia axyridis (Pallas)

Reference : Testing semiochemicals from aphid, plant and conspecific: attraction of Harmonia axyridi...


	Document type :	Scientific journals : Article
	Discipline(s) :	Life sciences : Entomology & pest control Life sciences : Biochemistry, biophysics & molecular biology Life sciences : Agriculture & agronomy
	To cite this reference:	http://hdl.handle.net/2268/80060

Title :	Testing semiochemicals from aphid, plant and conspecific: attraction of Harmonia axyridis (Pallas)
Language :	English
Author, co-author :	Leroy, Pascal [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
	Schillings, Thomas [Université de Liège - ULg > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels >]
	Farmakidis, Julien [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
	Heuskin, Stéphanie [Université de Liège - ULg > Chimie et bio-industries > Chimie analytique >]
	Lognay, Georges [Université de Liège - ULg > Chimie et bio-industries > Chimie analytique >]
	Verheggen, François [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
	Brostaux, Yves [Université de Liège - ULg > Sciences agronomiques > Statistique, Inform. et Mathém. appliquée à la bioingénierie >]
	Haubruge, Eric [Université de Liège - ULg > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech - Entomologie fonctionnelle et évolutive >]
	Francis, Frédéric [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Other contributor :	Joseph, Modeline [> >]
Publication date :	2012
Journal title :	Insect Science
Publisher :	Blackwell Publishing
Volume :	19
Pages :	372-382
Peer reviewed :	Yes (verified by ORBi)
Audience :	International
ISSN :	1672-9609
Keywords :	[en] aphids ; attractant ; Harmonia axyridis ; plant ; semiochemichals ; wind-tunnel
Abstract :	[en] Harmonia axyridis Pallas (Coleoptera: Coccinellidae) is an invasive specie affecting the dynamics and composition of several guilds. Nowadays, no biological control method is available to reduce the populations of this harmful coccinellid. Attractants and semiochemicals seem to be the best alternative but only few studies have tested the impact of semiochemicals on this Asian lady beetle. In this work, through wind-tunnel experiments, semiochemicals from aphids [Z,E-nepetalactone, (E)-β-farnesene, α-pinene and β-pinene], from coccinellids [(-)-β-caryophyllene] and from the nettle Urtica dioica L. were envisaged as potential attractants. The nettle volatile compounds [(Z)-3-hexenol and (E)-2-hexenal] were extracted using a Clevenger Apparatus® and identified by headspace-GC-MS. The main components of the aphid alarm pheromone as well as a component of the aphid sexual pheromone strongly attracted both sexes of the Asian lady beetle while (-)-β-caryophyllene only attracted few individuals and had no impact on the males. The nettle extract as well as the (Z)-3-hexenol oriented both males and females to the odour source. The (E)-2-hexenal was showed to have no effect on females even if this green leaf volatile attracted males. This study highlighted that some semiochemicals from aphids and from nettle extracts orientated the harlequin ladybird H. axyridis. These volatile compounds could certainly help for an efficient biological control approach against this invasive specie.
Research units :	Gembloux Agro-Bio Tech
Funders :	Walloon Region Ministry Grant
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/80060
DOI :	10.1111/j.1744-7917.2011.01449.x

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