Comparison of intestinal microbiota composition between individuals (I) of the different rainbow trout (<i>Oncorhynchus mykiss</i>) families (F1, F2, F3 and F4) fed different diets (D1, D2 and D3).

<p>(A) Clustering analysis of intestinal microbiota based on distances between different groups was performed using the TREECON program with neighbor-joining method (Van de Peer and De Wachter, 1997) as described (Romero and Navarrete, 2006). (B) The principal components analysis (PCA) scores plot based on the bacterial identification data from intestinal bacterial communities.