1. Adult mosquito predation and potential impact on the sterile insect technique
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Bimbilé Somda, Nanwintoum, Maïga, Hamidou, Mamai, Wadaka, Bakhoum, Thierno, Wallner, Thomas, Poda, Serge, Yamada, Hanano, Bimbilé Somda, Nanwintoum Séverin, Poda, Serge Bèwadéyir, Bouyer, Jérémy, Insect Pest Control Laboratory (IPC laboratory), Food and Agriculture Organization of the United Nations [Rome, Italie] (FAO)-International Atomic Energy Agency [Vienna] (IAEA), Institut de Recherche en Sciences de la Santé Bobo Dioulasso (INSSA), Université Polytechnique Nazi Boni Bobo-Dioulasso (UNB), Université Norbert ZONGO de Koudougou, Institut de Recherche Agricole pour le Développement [Yaoundé] (IRAD), Animal, Santé, Territoires, Risques et Ecosystèmes (UMR ASTRE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Département Systèmes Biologiques (Cirad-BIOS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), The research presented in this paper was partially funded by the United States of America under the grant to the IAEA entitled: Surge expansion for the sterile insect technique to control mosquito populations that transmit the Zika virus and by the European Research Council under the European Union's Horizon 2020 research and innovation program (grant agreement no. 682387-REVOLINC)., and European Project: 682387,REVOLINC
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[SDV.BIO]Life Sciences [q-bio]/Biotechnology ,Mosquito Control ,Mantodea ,Aedes aegypti ,Aedes ,Animals ,Traitement ,Multidisciplinary ,Lutte anti-insecte ,fungi ,Lâcher d'insectes stériles ,Lizards ,Aedes albopictus ,Anopheles arabiensis ,Predatory Behavior ,Prédation ,Irradiation ,L20 - Écologie animale ,L72 - Organismes nuisibles des animaux - Abstract
The sterile insect technique is a promising environmentally friendly method for mosquito control. This technique involves releasing laboratory-produced sterile males into a target field site, and its effectiveness may be affected by the extent of adult mosquito predation. Sterile males undergo several treatments. Therefore, it is vital to understand which treatments are essential in minimizing risks to predation once released. The present study investigates the predation propensity of four mantis species (Phyllocrania paradoxa, Hymenopus coronatus, Blepharopsis mendica, Deroplatys desiccata) and two gecko species (Phelsuma standingi, P. laticauda) on adult Aedes aegypti, Ae. albopictus and Anopheles arabiensis mosquitoes in a laboratory setting. First, any inherent predation preferences regarding mosquito species and sex were evaluated. Subsequently, the effects of chilling, marking, and irradiation, on predation rates were assessed. The selected predators effectively preyed on all mosquito species regardless of the treatment. Predation propensity varied over days for the same individuals and between predator individuals. Overall, there was no impact of laboratory treatments of sterile males on the relative risk of predation by the test predators, unless purposely exposed to double the required sterilizing irradiation dose. Further investigations on standardized predation trials may lead to additional quality control tools for irradiated mosquitoes.
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