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Applied and Environmental Microbiology, June 2007, p. 3470-3479, Vol. 73, No. 11
0099-2240/07/$08.00+0     doi:10.1128/AEM.02120-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Geographical Distribution and Diversity of Bacteria Associated with Natural Populations of Drosophila melanogaster{triangledown} ,{dagger}

Vanessa Corby-Harris,1* Ana Clara Pontaroli,1 Lawrence J. Shimkets,1,2 Jeffrey L. Bennetzen,1 Kristin E. Habel,1 and Daniel E. L. Promislow1

Department of Genetics,1 Department of Microbiology, University of Georgia, Athens, Georgia2

Received 7 September 2006/ Accepted 24 March 2007

Drosophila melanogaster is one of the most widely used model systems in biology. However, little is known about its associated bacterial community. As a first step towards understanding these communities, we compared bacterial 16S rRNA gene sequence libraries recovered from 11 natural populations of adult D. melanogaster. Bacteria from these sequence libraries were grouped into 74 distinct taxa, spanning the phyla Proteobacteria, Bacteroidetes, and Firmicutes, which were unevenly spread across host populations. Summed across populations, the distribution of abundance of genera was closely fit by a power law. We observed differences among host population locations both in bacterial community richness and in composition. Despite this significant spatial variation, no relationship was observed between species richness and a variety of abiotic factors, such as temperature and latitude. Overall, bacterial communities associated with adult D. melanogaster hosts are diverse and differ across host populations.

* Corresponding author. Mailing address: Department of Genetics, University of Georgia, Athens, GA 30602-7223. Phone: (706) 542-8133. Fax: (706) 542-3910. E-mail: vcorby{at}uga.edu

{triangledown} Published ahead of print on 30 March 2007.

{dagger} Supplemental material for this article may be found at http://aem.asm.org/.

Applied and Environmental Microbiology, June 2007, p. 3470-3479, Vol. 73, No. 11
0099-2240/07/$08.00+0     doi:10.1128/AEM.02120-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.





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