Renal excretion in channel catfish following injection of quinaldine sulphate or 3‐ trifluoromethyl‐4‐nitrophenol

Abstract

Channel catfish, Ictalurus punctatus Rafinesque, injected intraperitoneally with 2‐methyl‐quinoline sulphate (QdSO4) or 3‐trifluoromethyl‐4‐nitrophenol (TFM) eliminate most of the dose of these compounds by extra‐renal routes. Patterns of renal excretion of Na+, K+, Ca2+, Mg2+, and Cl− (ρEq kg−1 h−1) appeared to be associated with the ‘stress’ of the urine collection technique rather than with the elimination of either compound. Concentrations of Na+, K+, Ca2+, Mg2+, and Cl− (mEq/1) were determined in urine, plasma and gall bladder bile.