Reference : Do root-emitted volatile organic compounds attract wireworms?
Scientific congresses and symposiums : Paper published in a journal
Life sciences : Entomology & pest control
http://hdl.handle.net/2268/129502
Do root-emitted volatile organic compounds attract wireworms?
English
[en] Les composés organiques volatils racinaires attirent-ils les larves de taupin?
Barsics, Fanny mailto [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Latine, Rémi [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Gfeller, Aurélie [Université de Liège - ULg > Sciences agronomiques > Biologie végétale >]
Laloux, Morgan [Université de Liège - ULg > Chimie et bio-industries > Chimie générale et organique >]
Lognay, Georges mailto [Université de Liège - ULg > Chimie et bio-industries > Analyse, qual. et risques - Labo. de Chimie analytique >]
Wathelet, Jean-Paul mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie générale et organique >]
Haubruge, Eric mailto [Université de Liège - ULg > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech >]
Verheggen, François mailto [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
2012
Communications in Agricultural and Applied Biological Sciences
Universiteit Gent. Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen
77
3
561-567
Yes (verified by ORBi)
No
International
1379-1176
Gent
Belgium
64th International Symposium on Crop Protection
22 mai 2012
Université de Gand
Gand
Belgium
[en] wireworms ; Agriotes sordidus ; chemical ecology ; rhizosphere ; volatile organic compounds ; root-pest
[en] Wireworms are the soil dwelling larvae of click beetles (Coleoptera: Elateridae). Their importance as crop pests increases since the efficient chemical means to control them cannot be considered anymore. Therefore, many integrated pest management strategies have been investigated in the past few years. Most of them rely on the understanding of the ecology of the click beetles during their whole life cycle. We focus our work on the chemical ecology of wireworms, more precisely on the root-emitted volatile organic compounds (VOCs) that might intervene in the food-searching process of the larvae by helping them to find a suitable host-plant or by acting as key factors in the belowground defence mechanism of the plant.
Here, we present our first results of dual-choice orientation tests in olfactometric pipes. Wireworms (Agriotes sordidus Illiger) were submitted individually to a variety of olfactory baits ranging from entire barley roots (Hordeum vulgare L. var. Quench) to isolated VOCs identified as part of the emitting profile. The latter was described thanks to HS-SPME samplings and GC-MS analysis, for roots grown in the exact same conditions as for the olfactometric experimentations with entire roots.
Most of the experimentations gave significant results. When confronted to volatiles emitted by entire roots, wireworms significantly orientated towards the bait (χ²-goodness-of-fit test, χ²=8, P-value=0.005). This result allowed us to follow up with the same device and to progressively vary the nature of the baits. Our protocol should be used for other plant-wireworm species combinations. Our results should be taken into account in varietal selection, in crop rotation, or in trapping systems aiming at the reduction of the populations of wireworms.
Université de Liège
Projet Rhizovol
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/129502

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