Context Is Key: Comparative Biology Illuminates the Vertebrate Microbiome

MBio
Sarah M Hird

Abstract

Microbes affect vertebrates on timescales from daily to evolutionary, and the cumulative effect of these interactions is immense. However, how microbiomes compare across (host) species is poorly understood, as most studies focus on relatively few species. A recent mBio article by S. J. Song, J. G. Sanders, F. Delsuc, J. Metcalf, et al. (mBio 11:e02901-19, 2019, https://doi.org/10.1128/mBio.02901-19) expands our collective understanding of the vertebrate microbiome by analyzing ∼900 species. They demonstrate that patterns within mammals contrast with those within birds. Their results suggest many hypotheses about the role of host ecology and evolution on microbiome variation. Bats, the only volant mammals, appear to contradict many of the general mammal microbiome trends, in some ways resembling birds. What role has powered flight, and the evolution thereof, played in microbiome structure and function? Comparative methods, mechanistic hypotheses, and theory will elucidate this exciting question (and others) that we can ask using Song, Sanders et al.'s data and results.

References

May 11, 2017·Frontiers in Microbiology·Sarah M Hird
Apr 28, 2018·Systematic Biology·Josef C UyedaMatthew W Pennell

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Citations

May 29, 2021·Nature Reviews. Microbiology·Elizabeth K Mallott, Katherine R Amato

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Methods Mentioned

BETA
dissect

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