Conserv Physiol
Department of Biology, Laurentian University, Sudbury, ON, Canada.
Published: October 2024
Conservation breeding programmes include translocations of animals across breeding facilities, both and , and to/from their natural habitat. Newly reintroduced Vancouver Island marmots (VIMs) originating from the captive breeding programme are known to experience high winter mortality once reintroduced. Whilst high winter mortality rates amongst reintroduced VIM populations remain a concern of unknown causes, this health issue could potentially be linked to changes in gut microbiota prior to hibernation. Furthermore, captivity is known to impact the gut microbiota of mammals that could be crucial for hibernation. In this study, we explored the diversity of bacterial communities in the gut of captive marmots during the entire active season, both kept in captivity at and facilities, as well as free-ranging marmots during the summer period. Gut microbial diversity was higher in marmots held in facilities, outside of their habitat range, compared to captive marmots held within their habitat range, and in the wild, and differences in composition were also observed. In the entire active season, animals kept in the facility had increased abundance in taxa known to be mucin degraders, sulphate producers and possible cross-feeders, whilst an increase in fibre degraders of and free-ranging marmots is potentially linked to diet variation between facilities. These results confirm the interest to transfer animals held at zoos to an facility before relocation and expand our understanding of microbiota variation according to hibernation cycles in the context of conservation biology.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11503477 | PMC |
http://dx.doi.org/10.1093/conphys/coae072 | DOI Listing |
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