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Bacterial communities of Aedes aegypti mosquitoes differ between crop and midgut tissues
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Bacterial communities of Aedes aegypti mosquitoes differ between crop and midgut tissues
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Journal Article
Bacterial communities of Aedes aegypti mosquitoes differ between crop and midgut tissues
2023
Overview
Microbiota studies of Aedes aegypti and other mosquitoes generally focus on the bacterial communities found in adult female midguts. However, other compartments of the digestive tract maintain communities of bacteria which remain almost entirely unstudied. For example, the Dipteran crop is a food storage organ, but few studies have looked at the microbiome of crops in mosquitoes, and only a single previous study has investigated the crop in Ae . aegypti . In this study, we used both culture-dependent and culture-independent methods to compare the bacterial communities in midguts and crops of laboratory reared Ae . aegypti . Both methods revealed a trend towards higher abundance, but also higher variability, of bacteria in the midgut than the crop. When present, bacteria from the genus Elizabethkingia (family Weeksellaceae) dominated midgut bacterial communities. In crops, we found a higher diversity of bacteria, and these communities were generally dominated by acetic acid bacteria (family Acetobacteriaceae) from the genera Tanticharoenia and Asaia . These three taxa drove significant community structure differences between the tissues. We used FAPROTAX to predict the metabolic functions of these communities and found that crop bacterial communities were significantly more likely to contain bacteria capable of methanol oxidation and methylotrophy. Both the presence of acetic acid bacteria (which commonly catabolize sugar to produce acetic acid) and the functional profile that includes methanol oxidation (which is correlated with bacteria found with natural sources like nectar) may relate to the presence of sugar, which is stored in the mosquito crop. A better understanding of what bacteria are present in the digestive tract of mosquitoes and how these communities assemble will inform how the microbiota impacts mosquito physiology and the full spectrum of functions provided by the microbiota. It may also facilitate better methods of engineering the mosquito microbiome for vector control or prevention of disease transmission.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
/ Analysis
/ Animals
/ Bacteria
/ Crops
/ Ecology and Environmental Sciences
/ Female
/ Females
/ Food
/ Gastrointestinal Tract - microbiology
/ Meals
/ Medicine and Health Sciences
/ Methanol
/ Methods
/ Microbiota (Symbiotic organisms)
/ Midgut
/ Nectar
/ Storage
/ Sucrose
/ Sugar
/ Sugars
/ Vaccines
