# Uniqueness of Companion Animal Fecal Microbiota: Convergence Patterns Between Giant Pandas, Red Pandas, and Domesticated Animals

## TL;DR

This study compares the gut microbes of giant pandas, red pandas, and domestic animals, finding unique patterns linked to their ecological niches.

## Contribution

The study reveals distinct microbial convergence patterns in giant pandas and red pandas, offering new insights into wildlife conservation through microbial interactions.

## Key findings

- Giant pandas have low microbial diversity and a unique bacterial composition dominated by Proteobacteria and Pseudomonas.
- Domesticated animals show the highest microbial diversity with Firmicutes and UCG-005 as dominant bacteria.
- Sympatric wildlife exhibit significant ecological divergence in their microbial communities compared to pandas.

## Abstract

To investigate the influence of host ecological niche on fecal microbial community composition, this investigation employed high-throughput sequencing to characterize the microbiota composition in fecal samples. Giant pandas (GP), red pandas (RP), sympatric wildlife (SA), and domesticated animals (HA) in the Meigu Dafengding National Nature Reserve were used in the research. The research has found that GP bacteria are mainly composed of Proteobacteria and Pseudomonas, RP is enriched in Proteobacteria and Arthrobacter, SA is characterized by Firmicutes and Bacillus, and HA is dominated by Firmicutes and UCG-005 (uncultured Lachnospiraceae). In terms of fungi, GP and RP are mainly dominated by Ascomycota, enriched in Mrakia and Thelebolus, respectively, while SA is dominated by Ascomycota and Thelebolus, and HA is dominated by Chytridiomycota and Geotrichum. The assessment of alpha diversity demonstrated that HA had the highest microbial diversity and GP had the lowest; evaluation of beta diversity established that the community structures of each group were significantly separated. The study revealed a significant ecological divergence between the bacterial and fungal communities in sympatric wildlife, while giant pandas exhibit synergistic variation in their microbiota. This study provides new scientific basis for wildlife conservation from the perspective of focusing on microbial interactions.