Fig. 4

Mean relative abundance (%) at the phylum level of the gut content microbiota from rainbow trout line A in the left and B in the right panel. Each bar represents a diet-stress combination treatment within the genetic trout lines. Phyla with a representation of relative abundance < 0.05 were pooled in the category ‘Other’. The arrangement of the bars is based on abundance, except for the most abundant phyla, which is placed at the bottom for legibility. The mean value joins the data from each individual fish for the corresponding treatment across the three tanks. Unstressed group (0), stressed group (1), fishmeal diet (F), plant-based diet (V)