Larval habitat determines the bacterial and fungal microbiota of the mosquito vector Aedes aegypti
2022
Zouache, Karima | Martin, Edwige | Rahola, Nil | Gangue, Marc | Minard, Guillaume | Dubost, Audrey | Van, van Tran | Dickson, Laura, B | Ayala, Diego | Lambrechts, Louis, A | Moro, Claire Valiente | Laboratoire d'Ecologie Microbienne - UMR 5557 (LEM) ; Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon-Ecole Nationale Vétérinaire de Lyon (ENVL)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Centre International de Recherches Médicales de Franceville (CIRMF) | Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC) ; Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [Occitanie])-Université de Montpellier (UM) | Interactions Virus-Insectes - Insect-Virus Interactions (IVI) ; Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) | University of Texas Medical Branch at Galveston | This work was primarily funded by the Agence Nationale de la Recherche (grant ANR-16-CE35-0004-01 to LL and CVM). It was also supported by the French Government's Investissement d'Avenir program Laboratoire d'Excellence Integrative Biology of Emerging Infectious Diseases (grant ANR-10-LABX-62-IBEID to LL). | ANR-16-CE35-0004,MOSQUIBIOTA,Contribution de la diversité bactérienne intestinale à la capacité vectorielle d'Aedes aegypti(2016) | ANR-10-LABX-0062,IBEID,Integrative Biology of Emerging Infectious Diseases(2010)
International audience
Mostrar más [+] Menos [-]Inglés. Abstract Mosquito larvae are naturally exposed to microbial communities present in a variety of larval development sites. Several earlier studies have highlighted that the larval habitat influences the composition of the larval bacterial microbiota. However, little information is available on their fungal microbiota, i.e. the mycobiota. In this study, we provide the first simultaneous characterization of the bacterial and fungal microbiota in field-collected Aedes aegypti larvae and their respective aquatic habitats. We evaluated whether the microbial communities associated with the breeding site may affect the composition of both the bacterial and fungal communities in Ae. aegypti larvae. Our results show a higher similarity in microbial community structure for both bacteria and fungi between larvae and the water in which larvae develop than between larvae from different breeding sites. This supports the hypothesis that larval habitat is a major factor driving microbial composition in mosquito larvae. Since the microbiota plays an important role in mosquito biology, unravelling the network of interactions that operate between bacteria and fungi is essential to better understand the functioning of the mosquito holobiont.
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