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Midgut bacterial dynamics in aedes aegypti
Stockholm University, Faculty of Science, Department of Genetics, Microbiology and Toxicology.
Stockholm University, Faculty of Science, Department of Genetics, Microbiology and Toxicology.
Stockholm University, Faculty of Science, Department of Genetics, Microbiology and Toxicology.
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2012 (English)In: FEMS Microbiology Ecology, ISSN 0168-6496, E-ISSN 1574-6941, Vol. 80, no 3, 556-565 p.Article in journal (Refereed) Published
Abstract [en]

In vector mosquitoes, the presence of midgut bacteria may affect the ability to transmit pathogens. We have used a laboratory colony of Aedes aegypti as a model for bacterial interspecies competition and show that after a blood meal, the number of species (culturable on LuriaBertani agar) that coexist in the midgut is low and that about 40% of the females do not harbor any cultivable bacteria. We isolated species belonging to the genera Bacillus, Elizabethkingia, Enterococcus, Klebsiella, Pantoea, Serratia, and Sphingomonas, and we also determined their growth rates, antibiotic resistance, and ex vivo inhibition of each other. To investigate the possible existence of coadaptation between midgut bacteria and their host, we fed Ae.similar to aegypti cohorts with gut bacteria from human, a frog, and two mosquito species and followed the bacterial population growth over time. The dynamics of the different species suggests coadaptation between host and bacteria, and interestingly, we found that Pantoea stewartii isolated from Ae.similar to aegypti survive better in Ae.similar to aegypti as compared to P.similar to stewartii isolated from the malaria mosquito Anopheles gambiae.

Place, publisher, year, edition, pages
2012. Vol. 80, no 3, 556-565 p.
Keyword [en]
co-adaptation, midgut bacteria, 16S rRNA gene
National Category
Microbiology
Identifiers
URN: urn:nbn:se:su:diva-79784DOI: 10.1111/j.1574-6941.2012.01317.xISI: 000303761900004OAI: oai:DiVA.org:su-79784DiVA: diva2:551785
Note

AuthorCount:8;

Available from: 2012-09-12 Created: 2012-09-11 Last updated: 2017-12-07Bibliographically approved

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