Evidence map›Paper›PMID 34930493›Full record

ArticleAnimal microbiome2021

Gut microbiome composition, not alpha diversity, is associated with survival in a natural vertebrate population.

Sarah F Worsley, Charli S Davies, Maria-Elena Mannarelli, Matthew I Hutchings, Jan Komdeur, Terry Burke, Hannah L Dugdale, David S Richardson

Open access · goldAbstract read
In one paragraph

Article in Animal microbiome, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 1 pooled it
6.0field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

41 citing papers in PubMed, 1 synthesis or guideline pooled it, 99 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. The island biology of the host microbiome.Trends in microbiology · 2026
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 3 countries.

Sarah F WorsleySchool of Biological Sciences, University of East Anglia, Norwich Research Park, Norfolk, NR4 7TJ, UK. sarah.worsley@uea.ac.uk.ORCID http://orcid.org/0000-0003-4736-0938
Charli S DaviesSchool of Biological Sciences, University of East Anglia, Norwich Research Park, Norfolk, NR4 7TJ, UK.
Maria-Elena MannarelliSchool of Biological Sciences, University of East Anglia, Norwich Research Park, Norfolk, NR4 7TJ, UK.
Matthew I HutchingsDepartment of Molecular Microbiology, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK.
Jan KomdeurGroningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, P.O. Box 11103, 9700 CC, Groningen, The Netherlands.
Terry BurkeDepartment of Animal and Plant Sciences, NERC Biomolecular Analysis Facility, University of Sheffield, Sheffield, S10 2TN, UK.
Hannah L DugdaleGroningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, P.O. Box 11103, 9700 CC, Groningen, The Netherlands.
David S RichardsonSchool of Biological Sciences, University of East Anglia, Norwich Research Park, Norfolk, NR4 7TJ, UK. david.richardson@uea.ac.uk.
University of East Anglia · GBJohn Innes Centre · GBUniversity of Groningen · NLUniversity of Leeds · GBUniversity of Sheffield · GB

Funding

Natural Environment Research Council NBAF1092Natural Environment Research Council NE/L002582/1Natural Environment Research Council NE/S010939/1
6 · The paper itself

Abstract

backgroundThe vertebrate gut microbiome (GM) can vary substantially across individuals within the same natural population. Although there is evidence linking the GM to health in captive animals, very little is known about the consequences of GM variation for host fitness in the wild. Here, we explore the relationship between faecal microbiome diversity, body condition, and survival using data from the long-term study of a discrete natural population of the Seychelles warbler (Acrocephalus sechellensis) on Cousin Island. To our knowledge, this is the first time that GM differences associated with survival have been fully characterised for a natural vertebrate species, across multiple age groups and breeding seasons.

resultsWe identified substantial variation in GM community structure among sampled individuals, which was partially explained by breeding season (5% of the variance), and host age class (up to 1% of the variance). We also identified significant differences in GM community membership between adult birds that survived, versus those that had died by the following breeding season. Individuals that died carried increased abundances of taxa that are known to be opportunistic pathogens, including several ASVs in the genus Mycobacterium. However, there was no association between GM alpha diversity (the diversity of bacterial taxa within a sample) and survival to the next breeding season, or with individual body condition. Additionally, we found no association between GM community membership and individual body condition.

conclusionsThese results demonstrate that components of the vertebrate GM can be associated with host fitness in the wild. However, further research is needed to establish whether changes in bacterial abundance contribute to, or are only correlated with, differential survival; this will add to our understanding of the importance of the GM in the evolution of host species living in natural populations.

Indexed as

Acrocephalus sechellensisFitnessGut microbiomeLife historyMicrobial diversity

Identifiers

PMID34930493
PMCPMC8685825
OpenAlexW4226072898

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.