TABLE 9.

Relative abundance of Archaea in PL gut microbiota and their compositions.

Percentage of Archaea in PL gut microbiota (%)1			BD1	SD1	CD1	BD7	SD7	CD7
			0.02	0.03	0.1	2.0	0.02	0.05
Within Archaea			Percentage of different archaeal taxonomic groupings in PL guts within each group (%)
Phyla	Class	Order
Euryarchaeota	Methanomicrobia	Methanosarcinales	50	30	42	39	60	33
		Methanomicrobiales	0	9	8	4	20	33
	Methanobacteria	Methanobacteriales	10	17	15	5.3	0	0
	Halobacteria	Halobacteriales	0	0	0	0.9	0	0
	Thermoplasmata	Methanomassiliicoccales	0	26	15	19	10	0
	Unclassified	Unclassified	0	0	0	1.2	0	0
Crenarchaeota	Thermoprotei	Desulfurococcales	0	0	3	2	0	0
		Unclassified	40	17	17	27	10	33
Thaumarchaeota	Nitrososphaeria	Nitrososphaerales	0	0	0	1	0	0
		Nitrosopumilales	0	0	0	0.2	0	0
Woesearchaeota	–2	Incertae sedis AR162	0	0	0	2.0	0	0
	–2	Incertae sedis AR202	0	0	0	0.3	0	0
	Unclassified	Unclassified	0	0	0	0.3	0	0
Unclassified	Unclassified	Unclassified	0	0	3	0	0	0

¹Percentage (%) of Archaea in gut microbiota in each sample was revealed by the 16S rDNA high-throughput sequencing. ²Means that further classification is undetermined at present.