FIGURE 4.

Stacked barplots showing the relative abundance of bacterial 16S ribosomal RNA sequences, at the genus level (>1% of total abundance), that are present in tetrodotoxin (TTX)-bearing Paphies australis from the Hokianga Harbor samples but not in tissue samples from sites with low TTX. (A,B) show communities present in P. australis’ siphons and digestive glands, respectively, at the Hokianga site but not in similar tissues from the three lowest TTX sites. (C) shows relative abundance of bacteria communities present in TTX-bearing P. australis’ digestive glands and the non-toxic Austrovenus stutchburyi’s digestive gland from the same bed in the Hokianga Harbor. S1: Siphon replicate 1, S3: Siphon replicate 3, G1: digestive gland replicate 1, G2: digestive gland replicate 2, G3: digestive gland replicate 3.