TABLE 4.

Pairwise comparisons of beta diversity among regenerating stomach and intestinal microbial communities over time^a

Multivariate pairwise test comparison	df	PERMANOVA
		t	P
Stomach
Initial (day 0) vs day 17	40	2.42	0.001*
Initial (day 0) vs day 20	45	3.59	0.001*
Day 17 vs day 20	15	1.49	0.018*
Tank control vs initial (day 0)	45	1.85	0.023*
Tank control vs day 17	15	3.06	0.001*
Tank control vs day 20	20	4.39	0.001*
Intestine
Initial (day 0) vs day 13	43	2.50	0.001*
Initial (day 0) vs day 17	39	1.87	0.004*
Initial (day 0) vs day 20	43	2.78	0.001*
Day 13 vs day 17	14	1.14	0.15
Day 13 vs day 20	18	1.85	0.002*
Day 17 vs day 20	14	1.07	0.215
Tank control vs initial (day 0)	44	1.55	0.035*
Tank control vs day 13	19	2.30	0.001*
Tank control vs day 17	15	1.69	0.005*
Tank control vs day 20	19	2.78	0.001*

^aDenominator degrees of freedom are listed for all pairwise comparisons, and significant P values (<0.05) are indicated with asterisks. The overall PERMDISP tests for stomach and intestine were not significant; thus, pairwise tests for unequal dispersion of variability among groups were not conducted. t, t statistic of the pairwise PERMANOVA test.