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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Natural Variation in Physicochemical Profiles and Bacterial Communities Associated with Aedes aegypti Breeding Sites and Larvae on Guadeloupe and French Guiana
Microbial Ecology, Volume 81, No. 1, Year 2021
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Description
Aedes aegypti develop in aquatic habitats in which mosquito larvae are exposed to physicochemical elements and microorganisms that may influence their life cycle and their ability to transmit arboviruses. Little is known about the natural bacterial communities associated with A. aegypti or their relation to the biotic and abiotic characteristics of their aquatic habitats. We characterized the physicochemical properties and bacterial microbiota of A. aegypti breeding sites and larvae on Guadeloupe and in French Guiana. In addition, we explored whether geographic location, the type of breeding site and physicochemical parameters influenced the microbiota associated with this mosquito species. We used large-scale 16S rRNA gene sequencing of 160 breeding sites and 147 pools of A. aegypti larvae and recorded 12 physicochemical parameters at the sampled breeding sites. Ordination plots and multiple linear regression were used to assess the influence of environmental factors on the bacterial microbiota of water and larvae. We found territory-specific differences in physicochemical properties (dissolved oxygen, conductivity) and the composition of bacterial communities in A. aegypti breeding sites that influenced the relative abundance of several bacteria genera (e.g., Methylobacterium, Roseoccocus) on the corresponding larvae. A significant fraction of the bacterial communities identified on larvae, dominated by Herbiconiux and Microvirga genera, were consistently enriched in mosquitoes regardless the location. In conclusion, territory-specific differences observed in the biotic and abiotic properties of A. aegypti breeding sites raise concern about the impact of these changes on pathogen transmission by different A. aegypti populations. © 2020, The Author(s).
Authors & Co-Authors
Guidez, Amandine
French Guiana, Cayenne
Institut Pasteur de la Guyane
Reynaud, Yann
Unknown Affiliation
Issaly, Jean
French Guiana, Cayenne
Institut Pasteur de la Guyane
Breurec, Sébastien
Guadeloupe, Pointe-a-pitre
Institut Pasteur de Guadeloupe
France, Pointe-a-pitre
Université Des Antilles
France, Paris
Inserm
Constant, Philippe
Canada, Laval
Centre Armand-frappier Santé Biotechnologie
Dusfour, Isabelle
French Guiana, Cayenne
Institut Pasteur de la Guyane
Vega-Rúa, Anubis
Unknown Affiliation
Statistics
Citations: 21
Authors: 7
Affiliations: 5
Identifiers
Doi:
10.1007/s00248-020-01544-3
ISSN:
00953628
Research Areas
Environmental
Genetics And Genomics