Taxonomic diversity of laboratory-raised E. scolopes ANG communities (class level: A, finer levels: C–F) shows that the ANG communities of raised animals were dominated by Alphaproteobacteria (A, C), but almost completely lacked Opitutae (class of Verrucomicrobia) unless animals were raised on wet-collected sand (A, F). Flavobacteriia were only found in ANGs from CT-raised animals (D). Raised animals showed high levels of variability for all taxa (C–F), also evident from a plot of the average distance from the beta diversity centroid for each condition (B). Finer level plots (C–F) are shown on a log scale and include samples which contained these taxa at >0.1% abundance (c: class, f: family, o: order). Colors of C–F are the same as those in B. “Wet” indicates wet-collected sand throughout. “Lab sand” samples are from stunted ANGs from raising experiments not conducted on wet-collected sand (Fig. 2). Bars in C–F indicate mean +/− standard deviation.