Fig. 1.

16S rDNA clone libraries constructed from WT-WCR (HMO, Higginsville, MO) and RR-WCR (UIL, Urbana, IL) gut microbiotas. A total of 154 and 142 clones were screened for the UIL and HMO population, respectively, until saturation of their collector’s curves (Fig. S3). The 100% stacked bar chart depicts proportional/compositional differences between microbiotas of WCRs from HMO and UIL. Blue fragments represent taxa that are more abundant in HMO; orange fragments represent taxa that are more abundant in UIL; green fragments represent taxa that exist only in HMO; gray fragments represent taxa that exist only in UIL. Top BLAST hits for each taxon (binned at 98% sequence similarity) are listed to the genus level.