Fig. 1

Epigenomic and transcriptomic divergence patterns between ecotypes. Principal component analysis (PCA) of (a) gene expression, (b) alternative splicing events, (c) miRNA expression, and (d) methylation profiles for marine (orange) and freshwater (light blue) in brain (circle) and liver (triangle). The numbers of (a) genes, (b) splicing events, (c) miRNAs, and (d) CpG sites used for PCA analyses are indicated in parentheses