THE ROLES OF HOST EVOLUTIONARY RELATIONSHIPS (GENUS: NASONIA) AND DEVELOPMENT IN STRUCTURING MICROBIAL COMMUNITIES

被引:130
作者
Brucker, Robert M. [1 ]
Bordenstein, Seth R. [1 ]
机构
[1] Vanderbilt Univ, Dept Biol Sci, Nashville, TN 37203 USA
关键词
Coevolution; genetic variation; parasitism; speciation; symbiosis; SYMBIOTIC BACTERIA; PARASITIC WASP; DROSOPHILA-MELANOGASTER; COCHLIOMYIA-HOMINIVORAX; PAENIBACILLUS-LARVAE; ANIMAL DEVELOPMENT; GUT MICROBIOTA; SCREWWORM FLY; IMMUNE-SYSTEM; WOLBACHIA;
D O I
10.1111/j.1558-5646.2011.01454.x
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
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 ?-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.
引用
收藏
页码:349 / 362
页数:14
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