Figure 3. Ordination of Bray–Curtis dissimilarities between bacterial communities within the gut of the mottled spinefoot rabbitfish (Siganus fuscescens). Ordination of Bray-Curtis dissimilarities between bacterial communities within the gut of the mottled spinefoot rabbitfish (Siganus fuscescens) compared among (A) individual fish (n = 4) using Principle Coordinate Analysis (PCoA), and among (B) gut locations (M, mid; H, hind), (C) gut sites (C, content; W, wall) and (D) gut sites within gut locations (MC, mid-content; MW, mid-wall; HC, hind-content; HW, hind- all) after conditioning on individual fish using Canonical Analysis of Principal coordinates (CAP).

Relative abundances, given a total sampling depth of 10,000 16S rRNA gene counts per sample, were square root transformed before calculation of dissimilarities. Variance explained in (A) for the horizontal axis = 34 % and vertical axis = 23 %.