Consequences of acute stress and cortisol manipulation on the physiology, behavior, and reproductive outcome of female Pacific salmon on spawning grounds

► We completed an experimental manipulation of cortisol using hormone implants. ► We examine how acute and chronic stress influence reproductive behavior. ► Our experiments observe reproductive physiology and outcome. ► Exogenous cortisol implants negatively influence survival and reproduction. ► Acute stress events do not influence survival and reproduction.