Composition and characteristics of gut microbiota in V. stejnegeri
Results indicated that the gut microbiota of V. stejnegeri predominantly consisted of Bacteria (82.19%), Eukaryota (17.44%), Viruses (0.22%), and Archaea (0.15%). A total of 9 435 bacterial species, belonging to 47 phyla, 101 classes, 214 orders, 514 families, and 1 951 genera, were detected. At the bacterial phylum level, the four most abundant groups, with a relative abundance ≥ 3%, were Pseudomonadota (72.12% ± 20.72%), Bacteroidota (14.11% ± 19.00%), Actinomycetota (6.58% ± 8.74%), and Bacillota (4.58% ± 2.79%) (Fig. 2). The dominant phyla in the three different populations are listed in Table 3. At the genus level, the four most abundant genera, with a relative abundance ≥ 3%, were Salmonella (28.76% ± 23.53%),Citrobacter (14.36% ± 13.56%), Bacteroides (10.78% ± 20.23%), and Yokenella (3.65% ± 6.08%) (Fig. 3). Variations in dominant genera were observed across the different populations (Table 4).