Abstract
Toxicological impact on Metacid (an organo-phosphate pesticide) on changes in bimodal (i.e. via aerial, aquatic route and total) oxygen uptake pattern has been studied in an air breathing siluroid teleostean fish, Clarias batrachus (Linn). The treatment of Metacid brought statistically significant decrease in total oxygen uptake (cc/kg/h) as compared to control but oxygen consumption through aerial route increased significantly in Metacid exposed fishes. The reason and mechanism for such changes have been discussed in this paper.