New method to study the repellent, irritant and toxic effects on Anopheles gambiae. Application on 20 essential oils

Deletre Emilie, Chandre Fabrice, Menut Chantal, Bonafos Romain, Cadin Andy, Martin Thibaud. 2012. New method to study the repellent, irritant and toxic effects on Anopheles gambiae. Application on 20 essential oils. In : E-sove 2012 : from biology to integrated control in a changing world. Abstract book. European Society for Vector Ecology, CIRAD, EID, IRD. Montpellier : European Society for Vector Ecology, Résumé, 179. Conférence E-SOVE. 18, Montpellier, France, 8 Octobre 2012/11 Octobre 2012.

Résumé : Laboratory and field studies showed that repellent and irritant actions of common public health insecticides reduce the man-vector contact and so interrupt the disease transmission particularly when use with long lasting treated bednets. However resistance in mosquitoe populations bring up the issue of finding alternative to these insecticides. The objective of this study was to evaluate the repellent, irritant and toxic effects of 20 essential oils on Anopheles gambiae adults in laboratory. A high-troughput screening system was previously described to characterize repellent, irritant and toxicant chemical actions on Aedes spp. This system was adapted to test essential oils on An. gambiae. Twenty essentials oils were tested on An. gambiae at three concentrations (0.01%, 0.1% and 1%) with 3 replications of 20 adult mosquitoes. Results showed essential oils could have irritant, repellent, or toxic effects on An. gambiae. But data also indicated that behavioral responses to the three effects appeared independent so we could expect that the repellent mechanism may be different than the irritant and than the toxic ones. However the behavioral response of An. gambiae was dose-dependent. (Texte intégral)

Classification Agris : L72 - Organismes nuisibles des animaux
Q60 - Traitement des produits agricoles non alimentaires

Auteurs et affiliations

• Deletre Emilie, CIRAD-PERSYST-UPR HortSys (FRA)
• Chandre Fabrice, IRD (FRA)
• Menut Chantal, UM1 (FRA)
• Bonafos Romain, Montpellier SupAgro (FRA)
• Cadin Andy, CIRAD-PERSYST-UPR HortSys (FRA)
• Martin Thibaud, CIRAD-PERSYST-UPR HortSys (FRA) ORCID: 0000-0002-4915-4436

Source : Cirad - Agritrop (https://agritrop.cirad.fr/566193/)

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