Plasma catecholamines and erythrocyte swelling following capture stress in a marine teleost fish.
Plasma concentrations of adrenaline and noradrenaline were measured at rest from cannulated fish and following net capture. Adrenaline and noradrenaline concentrations in capture-stressed fish averaged 36,740 pmol l-1 and 38,860 pmol l-1 respectively, whereas resting values were less than 200 pmol l-1 for both amines. Erythrocyte swelling and raised blood lactate were evident in stressed fish. In vitro effects of 5 mmol l-1 adrenaline on erythrocyte suspensions suggested that the catecholamine had a direct effect on erythrocyte volume. The significance of these results is discussed in relation to the oxygen transport properties of the blood.
Ling
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D000818:Animals; D002395:Catecholamines / Q000097:blood*; D004837:Epinephrine / Q000494:pharmacology; D004911:Erythrocyte Volume / Q000187:drug effects; D005399:Fishes / Q000097:blood*; D066298:In Vitro Techniques; D013312:Stress, Physiological / Q000097:blood*
D002395:Catecholamines; D004837:Epinephrine