observed resting plasma cortisol levels of about 30–80 ng ml"1, and stressed levels of about 100–150 ng ml"1 in this species in response to being transferred from fresh water to 27‰
observed resting plasma cortisol levels of about 30–80 ngml"1, and stressed levels of about 100–150 ng ml"1 in this species in response tobeing transferred from fresh water to 27‰