Numbers of OTUs observed for Hackberry Bay (HB) and Lake Caillou (LC) stomach and gut (S, G) microbiomes, and numbers of OTUs shared among samples based on sequences classified through the Mothur pipeline.

aTotal classified refers to the sum for all gut and stomach samples (284).Among all samples, 401 bacterial OTUs were observed at an evolutionary distance of 0.05–0.10, of which 284 were classified to at least the level of class. Values for HBS-HBG, LCS-LCG, HBS-LCS, and HBG-LCG represent classified OTUs shared between HB stomach and gut microbiomes, Lake Caillou stomach and gut microbiomes, HB and LC stomach microbiomes, and HB and LC gut microbiomes, respectively.