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Related Experiment Video

Updated: Jan 2, 2026

Microbiota of Attine Ants' Gardens: Visualizing a Microbial Landscape by Scanning Electron Microscopy
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Parallel changes in gut microbiome composition and function during colonization, local adaptation and ecological

Diana J Rennison1, Seth M Rudman1, Dolph Schluter1

  • 1Department of Zoology and Biodiversity Research Centre, University of British Columbia, Vancouver, British Columbia, Canada.

Proceedings. Biological Sciences
|December 5, 2019
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Summary
This summary is machine-generated.

Gut microbes rapidly and repeatedly change with host evolution, suggesting a key role for host-microbe interactions in adaptation and speciation of stickleback fish.

Keywords:
adaptationecological speciationfishgut microbiomeparallel evolutionthreespine stickleback

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Area of Science:

  • Evolutionary biology
  • Microbial ecology
  • Speciation research

Background:

  • Biotic interactions significantly influence local adaptation and ecological speciation.
  • Repeated evolutionary divergence linked to changing species communities suggests biotic drivers.
  • The repeatability of gut microbiome shifts during host adaptation and divergence remains understudied.

Purpose of the Study:

  • To investigate parallel changes in gut microbial communities during rapid, parallel adaptation and speciation in threespine stickleback.
  • To assess the role of gut microbiome alterations in host population divergence.

Main Methods:

  • Comparative analysis of gut microbial communities across three independent instances of threespine stickleback adaptation and speciation.
  • Examination of shifts in microbial community features in relation to host population divergence.

Main Results:

  • Gut microbial communities exhibited repeated, directional shifts correlating with parallel host adaptation and speciation.
  • Evidence suggests rapid and predictable changes in gut microbiomes accompany host evolution.

Conclusions:

  • Gut microbiome changes are repeatable and co-occur with host evolutionary divergence.
  • Host-microbe interactions are likely significant drivers of adaptation and diversification in natural populations.