AI Article Synopsis
- Tibetan wild asses are the only wild perissodactyls on the Qinghai-Tibet Plateau and are listed as threatened, making their gut microbiota important for conservation efforts.
- A study comparing wild asses to domestic donkeys found that wild asses have significantly better dry matter digestion and a distinct gut microbiota composition, with specific beneficial bacteria more abundant in them.
- The wild asses also exhibited a more complex gut bacterial network and had richer metabolic pathways related to amino acid, carbohydrate, and energy metabolism, reflecting their adaptation to high-altitude environments.
Article Abstract
Tibetan wild asses () are the only wild species of perissodactyls on the Qinghai-Tibet Plateau and appears on the International Union for Conversation of Nature (IUCN) 2012 Red List of threatened species. Therefore, understanding the gut microbiota composition and function of wild asses can provide a theoretical for the situ conservation of wild animals in the future.In this study, we measured the dry matter digestion by the 4 molar hydrochloric acid (4N HCL) acid-insoluble ash method and analyzed the intestinal microbiota of wild asses and domestic donkeys by high-throughput sequencing of the 16s rDNA genes in V3-V4 regions. The results showed that the dry matter digestion in wild asses was significantly higher than in domestic donkeys ( < 0.05). No significant difference in alpha diversity was detected between these two groups. Beta diversity showed that the bacterial community structure of wild asses was acutely different from domestic donkeys. At the phylum level, the two dominant phyla and in wild asses were significantly higher than that in domestic donkeys. At the genus level, , , , and in wild asses were significantly higher than in domestic donkeys. Moreover, statistical comparisons showed that 40 different metabolic pathways exhibited significant differences. Among them, 29 pathways had richer concentrations in wild asses than domestic donkeys, mainly included amino acid metabolism, carbohydrate metabolism, and energy metabolism. Of note, network analysis showed that wild asses harbored a relatively more complex bacterial network than domestic donkeys, possibly reflecting the specific niche adaption of gut bacterial communities through species interactions. The overall results indicated that wild asses have advantages over domestic donkeys in dry matter digestion, gut microbial community composition and function, and wild asses have their unique intestinal flora to adapt high altitudes on the Qinghai-Tibet plateau.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7276150 | PMC |
| http://dx.doi.org/10.7717/peerj.9032 | DOI Listing |
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