Linear discriminate analyses of trophic specialist microbiota
We found that an excess of taxa in the family Burkholderiaceaebest discriminated all lab-reared scale-eater individuals in two different lake populations from all other gut microbiome samples (Figures 3-4; linear discriminant analysis log score = 4.85). In addition, we found a deficiency of Vibrionales ,Vibrionaceae , and Vibrio in these scale-eater individuals relative to all other gut samples (LDA log scores = -5.22, -5.22, and -5.08, respectively; Figure 4). Similarly, we found an excess of taxa in the family Rhodobacteraceae and class Planctomycetacia in the molluscivores relative to all other gut samples (Figure 5; LDA log scores of 4.39 and 4.37, respectively).