Plasma catecholamines levels in two types of fresh water carp fishes, Labeo rohita and Cirrhinus mrigala collected in wild from an aquatic body near Kalaburagi situated in the Deccan plateau of India

Abstract

Plasma norepinephrine (noradrenaline) and epinephrine (adrenaline) in two types of fresh water carp fishes cultured in an aquatic body and collected in wild was measured by applying enzyme immune assay (ELISA) method in a small volume of plasma to assess the stress response. The mean values obtained for plasma norepinephrine and epinephrine were higher and found to be 334.9 pg/mL and 42.6 pg/mL respectively for Labeo rohita and similarly 386.3 pg/mL (norepinephrine) and 27.8 pg/mL (epinephrine) for the fish, Cirrhinus mrigala. The values were compared with catecholamine levels in other fish species. The results indicated that norepinephrine is predominant catecholamine than epinephrine in both the fishes. The higher level of these catecholamines indicated that the fishes are in stress condition may be because of problem with capture and transportation method.