An agent-based model to simulate the boosted Sterile Insect Technique for fruit fly management
Diouf, Esther Gnilane | Brévault, Thierry | Ndiaye, Saliou | Faye, Emile | Chailleux, Anaïs | Diatta, Paterne | Piou, Cyril | Centre de Biologie pour la Gestion des Populations (UMR CBGP) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD [Occitanie])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM) | Université Iba Der Thiam [Thiès] (UIDT) | Agroécologie et intensification durables des cultures annuelles (UPR AIDA) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | Département Performances des systèmes de production et de transformation tropicaux (Cirad-PERSYST) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | Université Cheikh Anta Diop de Dakar [Sénégal] (UCAD) | Fonctionnement agroécologique et performances des systèmes de cultures horticoles (UPR HORTSYS) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | Institut sénégalais de recherches agricoles [Dakar] (ISRA) | Département Systèmes Biologiques (Cirad-BIOS) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | This work was carried out with the financial support of a Long-term EU- Africa research and innovation Partnership on food and nutrition security and sustainable Agriculture (LEAP-Agri), project Pest-Free Fruit, in the framework of the European Union's Horizon 2020 research and innovation programme under grant agreement No 727715. It was also supported by the 2019 France-Senegal Research collaboration program of the French Embassy in Senegal and by CIRAD. | ANR-18-LEAP-0006,Pest free fruit,Sustainable intensification of fruit production systems through innovative pest biological control technologies(2018)
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Показать больше [+] Меньше [-]Английский. The sterile insect technique (SIT) is a method of biological control of pests and disease vector insects. It includes mass-rearing and release of sterile males of the target species so that wild females mated with sterile males would not produce offspring. An innovative version of this technique, called boosted SIT, relies on the use of sterile males as vectors of biocides to trigger an epizootic in the wild fruit fly population. We built an agent-based model to assess the feasibility of this technique and main modalities of field implementation for the control of the Oriental fruit fly, Bactrocera dorsalis, using the entomopathogenic fungi, Metarizhium anisopliae, as a biocide. The model, called BOOSTIT (BactrOcera dOrsaliS boosTed sIT), simulates the spatio-temporal population dynamics of fruit flies in three different realistic landscape contexts. The releases of infected and uninfected sterile males were simulated and allowed the transmission of the pathogen within the wild fly population as a result of interactions between individuals. A main output was the measurement of losses in mango production. Validation of the model was done by comparing the simulated population dynamics with data from field monitoring (pheromone traps) in three landscapes of the Niayes area in Senegal. The population dynamics of wild flies were then simulated in an intensive cropping and mono-mango cultivar landscape under three scenarios: (1) without the release of sterile males, (2) with the release of non-contaminated sterile males (SIT) and (3) with the release of sterile contaminated males (boosted SIT). The results showed that SIT and boosted SIT strongly reduced the density of wild flies and the amount of infested fruits. Although parameters of the pathogen transfer between individuals need to be studied more deeply, results encourage the implementation of field trials to validate the efficacy of boosted SIT to control fruit flies.
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