Extensive variability in the gut microbiome of a highly-specialized and critically endangered lemur species across sites

Mariah E. Donohue, Abigail E. Asangba, Jocelyn Ralainirina, David W. Weisrock, Rebecca M. Stumpf, Patricia C. Wright

Research output: Contribution to journalArticle

Abstract

Deforestation continues to jeopardize Malagasy primates as viable habitats become smaller, more fragmented, and more disturbed. This deforestation can lead to changes in diet, microhabitat, and gene flow between populations of endangered species, and it remains unclear how these changes may affect gut microbiome (GM) characteristics. The black-and-white ruffed lemur (Varecia variegata), which is among Madagascar's most threatened lemur species, provides a critical model for understanding the relationships between historical and on-going deforestation (habitat disturbance), feeding ecology, and GM composition and diversity. We studied four populations inhabiting two rainforests (relatively pristine vs. highly disturbed) in southeastern Madagascar. We conducted full-day focal animal behavioral follows and collected fecal samples opportunistically across a three-month period. Our results indicate that lemurs inhabiting sites characterized by habitat disturbance and low dietary diversity exhibited reduced gut microbial alpha diversity. We also show that these same factors were associated with high community dissimilarity using weighted and unweighted UniFrac metrics. Finally, an indicator species analysis showed that the most pristine site was characterized by an abundance of methanogenic archaea. While it is impossible to disentangle the relative contributions of each confounding variable presented by our sampling design, these results provide crucial information about GM variability, thereby underscoring the importance of monitoring endangered species at the population-level.

Original languageEnglish (US)
Article numbere23046
JournalAmerican journal of primatology
Volume81
Issue number10-11
DOIs
StatePublished - Oct 1 2019

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Lemur
deforestation
endangered species
digestive system
Madagascar
habitat
habitats
disturbance
Lemuridae
feeding ecology
Archaea
intestinal microorganisms
rainforest
microhabitat
primate
microhabitats
indicator species
gene flow
rain forests
Primates

Keywords

  • dietary diversity
  • gut microbiome
  • habitat disturbance
  • lemur

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

Cite this

Extensive variability in the gut microbiome of a highly-specialized and critically endangered lemur species across sites. / Donohue, Mariah E.; Asangba, Abigail E.; Ralainirina, Jocelyn; Weisrock, David W.; Stumpf, Rebecca M.; Wright, Patricia C.

In: American journal of primatology, Vol. 81, No. 10-11, e23046, 01.10.2019.

Research output: Contribution to journalArticle

Donohue, Mariah E. ; Asangba, Abigail E. ; Ralainirina, Jocelyn ; Weisrock, David W. ; Stumpf, Rebecca M. ; Wright, Patricia C. / Extensive variability in the gut microbiome of a highly-specialized and critically endangered lemur species across sites. In: American journal of primatology. 2019 ; Vol. 81, No. 10-11.
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