THE ROLES OF HOST EVOLUTIONARY RELATIONSHIPS (GENUS: NASONIA) AND DEVELOPMENT IN STRUCTURING MICROBIAL COMMUNITIES
Article first published online: 5 OCT 2011
© 2011 The Author(s). Evolution© 2011 The Society for the Study of Evolution.
Volume 66, Issue 2, pages 349–362, February 2012
How to Cite
Brucker, R. M. and Bordenstein, S. R. (2012), THE ROLES OF HOST EVOLUTIONARY RELATIONSHIPS (GENUS: NASONIA) AND DEVELOPMENT IN STRUCTURING MICROBIAL COMMUNITIES. Evolution, 66: 349–362. doi: 10.1111/j.1558-5646.2011.01454.x
- Issue published online: 25 JAN 2012
- Article first published online: 5 OCT 2011
- Accepted manuscript online: 2 SEP 2011 09:24AM EST
- Received March 17, 2011, Accepted August 8, 2011
- genetic variation;
The comparative structure of bacterial communities among closely related host species remains relatively unexplored. For instance, as speciation events progress from incipient to complete stages, does divergence in the composition of the species’ microbial communities parallel the divergence of host nuclear genes? To address this question, we used the recently diverged species of the parasitoid wasp genus Nasonia to test whether the evolutionary relationships of their bacterial microbiotas recapitulate the Nasonia phylogenetic history. We also assessed microbial diversity in Nasonia at different stages of development to determine the role that host age plays in microbiota structure. The results indicate that all three species of Nasonia share simple larval microbiotas dominated by the γ-proteobacteria class; however, bacterial species diversity increases as Nasonia develop into pupae and adults. Finally, under identical environmental conditions, the relationships of the microbial communities reflect the phylogeny of the Nasonia host species at multiple developmental stages, which suggests that the structure of an animal's microbial community is closely allied with divergence of host genes. These findings highlight the importance of host evolutionary relationships on microbiota composition and have broad implications for future studies of microbial symbiosis and animal speciation.