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Título

Individual fate and gut microbiome composition in the European wild rabbit (Oryctolagus cuniculus)

AutorFunosas, Gerard CSIC; Triadó-Margarit, Xavier CSIC ORCID ; Castro, Francisca CSIC ORCID; Villafuerte, Rafael CSIC ORCID; Delibes-Mateos, Miguel CSIC ORCID; Rouco, Carlos CSIC ORCID; Casamayor, Emilio O. CSIC ORCID
Fecha de publicación2021
EditorNature Publishing Group
CitaciónScientific Reports 11 : 766 (2021)
ResumenStudies connecting microbiome composition and functional performance in wildlife have received little attention and understanding their connections with wildlife physical condition are sorely needed. We studied the variation in gut microbiota (hard fecal pellets) between allopatric subspecies of the European wild rabbit in wild populations and in captured individuals studied under captivity. We evaluated the infuence of environmental and host-specifc factors. The microbiome of wild rabbit populations reduced its heterogeneity under controlled conditions. None of the host-specifc factors tested correlated with the microbiota composition. We only observed signifcant intra-group dispersion for the age factor. The most diverse microbiomes were rich in Ruminococcaceae potentially holding an enriched functional profle with dominance of cellulases and xylanases, and suggesting higher efciency in the digestion of fber-rich food. Conversely, low diversity gut microbiomes showed dominance of Enterobacteriaceae potentially rich in amylases. We preliminary noticed geographical variations in feld populations with higher dominance of Ruminococcaceae in south-western than in north-eastern Spain. Spatial diferences appeared not to be subspecies driven, since they were lost in captivity, but environmentally driven, although diferences in social structure and behavior may also play a role that deserve further investigations. A marginally signifcant relationship between the Ruminococcaceae/Enterobacteriaceae ratio and potential life expectancy was observed in captive rabbits. We hypothesize that the gut microbiome may determine the efciency of feeding resource exploitation, and can also be a potential proxy for life expectancy, with potential applications for the management of declining wild herbivorous populations. Such hypotheses remain to be explored in the future.
DescripciónEste artículo contiene 13 páginas, 7 figuras.
Versión del editorhttps://doi.org/10.1038/s41598-020-80782-4
URIhttp://hdl.handle.net/10261/227096
ISSN2045-2322
E-ISSN2045-2322
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