Early developmental stress affects subsequent gene expression response to an acute stress in Atlantic salmon: A tool for creating robust fish.

Stress during early life has potential to program and alter the response to stressful events and metabolism in later life. Short frequent exposure of Atlantic salmon to cold water and air during embryonic (E), post-hatch (PH) or both phases of development (EPH) alters the methylome and transcriptome and affects growth performance during later life compared to untreated controls (CO). The aim of this study was to investigate how the transcriptome of these fish responds to subsequent acute stress at the start feeding stage, and to describe methylation differences that might steer these changes.