Reference : Use of Chrysoperla carnea larvae for biological control of immature stages of Leptino...
Scientific congresses and symposiums : Poster
Life sciences : Entomology & pest control
Use of Chrysoperla carnea larvae for biological control of immature stages of Leptinotarsa decemlineata
[fr] Utilisation de Chrysoperla carnea pour la lutte biologique contre les stades immatures de Leptinotarsa decemlineata
Sablon, Ludovic mailto [Université de Liège - ULiège > > Gembloux Agro-Bio Tech >]
Lejeune, Renaud mailto [Université de Liège - ULiège > > > 2e an. master bioingé. : sc. agrono., fin. spéc.]
Haubruge, Eric mailto [Université de Liège - ULiège > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech >]
Verheggen, François mailto [Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Symposium on Insect-Plant Interactions (SIP 14)
13-18 Augustus 2011
The Netherlands
[en] Biological control ; eggs ; larva ; potato ; lacewing ; Colorado potato beetle ; Integrated Pest Management
[en] The Colorado potato beetle (CPB), Leptinotarsa decemlineata Say, is an important economic pest of potato which populations are effectively controlled by insecticides. However, development of resistance along with the poor image of unnaturally management methods pushes researchers to develop alternative "greener" methods.
Chrysoperla carnea is a generalist predator whose larvae are very voracious on any types of soft-bodied insects. In laboratory assays, we demonstrated a good predatory potential of lacewing larvae against eggs, first and second CPB larval instars. The third lacewing larval instar showed an important consumption of CPB immature stages. Indeed, when looking at the daily consumption, we found that prey consumption by the third larval instar was 3-fold higher compared to the two first instars. Partial or total consumption of prey was also numbered. Different proportions of partial/total consumption were found and these depend on the lacewing larval stage.
This study provides new perspectives for possible use of C. carnea as a biological agent to control CPB. Nevertheless, additional work has to be conducted under semi-natural and field to completely evaluate the lacewing potential as a CPB predator.
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