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Unweighted pair group method with arithmetic mean (UPGMA) tree based on Bray-Curtis distance analysis. Bar graph represents the relative abundance of predominant bacterial phyla in the tank water (TW, diamond) as well as fore (F, triangle), mid (M, circle), and hindguts (H, square) of P. nigrolineatus fed either a wood (W, open symbols) or mixed diet (X, closed symbols). OTUs were picked using the SILVA_132 16S database (OTU ID =0.97).
