Article (Scientific journals)
Testing semiochemicals from aphid, plant and conspecific: attraction of Harmonia axyridis
Leroy, Pascal; Schillings, Thomas; Farmakidis, Julien et al.
2012In Insect Science, 19, p. 372-382
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Keywords :
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 Center/Unit :
Gembloux Agro-Bio Tech
Disciplines :
Biochemistry, biophysics & molecular biology
Agriculture & agronomy
Entomology & pest control
Author, co-author :
Leroy, Pascal ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Schillings, Thomas ;  Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels
Farmakidis, Julien ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Heuskin, Stéphanie ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie analytique
Lognay, Georges ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie analytique
Verheggen, François  ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Brostaux, Yves  ;  Université de Liège - ULiège > Sciences agronomiques > Statistique, Inform. et Mathém. appliquée à la bioingénierie
Haubruge, Eric  ;  Université de Liège - ULiège > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech - Entomologie fonctionnelle et évolutive
Francis, Frédéric  ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Other collaborator :
Joseph, Modeline
Language :
English
Title :
Testing semiochemicals from aphid, plant and conspecific: attraction of Harmonia axyridis
Publication date :
2012
Journal title :
Insect Science
ISSN :
1672-9609
eISSN :
1744-7917
Publisher :
Blackwell Publishing
Volume :
19
Pages :
372-382
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Région wallonne [BE]
Available on ORBi :
since 22 December 2010

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