Suppression of Aedes mosquito populations with the boosted sterile insect technique in tropical and Mediterranean urban areas

Bouyer Jérémy, Gil David Almenar, Mora Ignacio Pla, Sorlí Vicente Dalmau, Maiga Hamidou, Mamaï Wadaka, Claudel Iris, Brouazin Ronan, Yamada Hanano, Gouagna Louis-Clément, Rossignol Marie, Chandre Fabrice, Dupraz Marlene, Simard Frédéric, Baldet Thierry, Lancelot Renaud. 2025. Suppression of Aedes mosquito populations with the boosted sterile insect technique in tropical and Mediterranean urban areas. Scientific Reports, 15:17648, 15 p.

Url - jeu de données - Entrepôt autre : https://datadryad.org/stash/share/a7_X2OqcfPmE8QglPmGFvXiMO-AOP6kysXHqvi5j2mQ

Résumé : Aedes mosquitoes are the vectors of dengue viruses and other arboviruses, which threaten billions of people all over the world. The boosted sterile insect technique (boosted SIT) is a version of SIT in which irradiated sterile males also transmit a biocide to immature stages. We describe three field trials that were run in 2021: one against Aedes aegypti in La Reunion and two against Aedes albopictus in Spain, each using pyriproxyfen as a biocide. The relative density of adults (compared to their density in control sites: without sterile male release) decreased from 1.00 to 0.09, 95% credible interval [0.06, 0.15] (La Reunion, July) and to 0.02 [0.01, 0.03] and 0.11 [0.08, 0.16] (Spain, July and October). The success rate, corresponding to the proportion of traps with suppression greater than 80%, ranged from 0.43 to 0.71 in La Reunion, from 0.26 to 1.00, and from 0.50 to 0.70 in Spain. In Spain, suppression with boosted SIT was higher than with non-boosted SIT, in 2020 and 2022. This work is in line with the predictions of the model of a better efficacy of boosted SIT compared to SIT, together with partial protection from invasion of treated areas by fertile females, paving the way for larger-scale field trials.

Mots-clés Agrovoc : Aedes albopictus, Aedes aegypti, vecteur de maladie, lutte anti-insecte, lâcher d'insectes stériles, dynamique des populations, piège, expérimentation au champ, zone urbaine, piégeage des animaux

Mots-clés géographiques Agrovoc : France, La Réunion, Espagne

Mots-clés libres : Vector control, Dengue, Chikunguya, Genetic control, Pyriproxyfen

Agences de financement européennes : European Commission, European Research Council

Programme de financement européen : H2020

Projets sur financement : (EU) Revolutionizing Insect Control

Auteurs et affiliations

• Bouyer Jérémy, CIRAD-BIOS-UMR ASTRE (REU) ORCID: 0000-0002-1913-416X - auteur correspondant
• Gil David Almenar, Empresa de Transformación Agraria S.A. (ESP)
• Mora Ignacio Pla, Empresa de Transformación Agraria S.A. (ESP)
• Sorlí Vicente Dalmau, Servicio de Sanidad Vegetal (ESP)
• Maiga Hamidou, IAEA (AUT)
• Mamaï Wadaka, IAEA (AUT)
• Claudel Iris, IRD (FRA)
• Brouazin Ronan, CIRAD-BIOS-UMR ASTRE (REU)
• Yamada Hanano, FAO (AUT)
• Gouagna Louis-Clément, IRD (FRA)
• Rossignol Marie, IRD (FRA)
• Chandre Fabrice, IRD (FRA)
• Dupraz Marlene, CIRAD-BIOS-UMR ASTRE (REU)
• Simard Frédéric, IRD (FRA)
• Baldet Thierry, CIRAD-BIOS-UMR ASTRE (REU) ORCID: 0000-0003-2979-9517
• Lancelot Renaud, CIRAD-BIOS-UMR ASTRE (REU) ORCID: 0000-0002-5826-5242 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/613339/)

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