The effect of sublethal doses (0.75 and 0.85 mg/I) of a weedicide, Choloroxuron for 20 days treatment on impairment of kidney has been studied in a freshwater teleostean fish, Mystus tengara (Ham.) Chloroxuron intoxication caused – a reduction in haemopoetic tissues, lumen of the tubule became wide, ground tissue of the kidney looked like a spongy body; different tubules were seen in shrunken condition; distruction in renal tissue and lumen of the tubules were obliterated, space developed in the interestial haemopoetic tissue due to necrosis. The details have been discussed in this paper.
The present study was carried out to evaluate the toxic effect of Chloroxuron (a weedicide) on histopathological changes in the liver of a fresh water teleostean fish, Mystus tengara (Ham.) at sublethal concentrations (0.75 and 0.85 ppm) for 10 and 20 days. After such treatment the liver showed disintegration of hepatic cells, separation of the hepatic cells from the blood vessels and proliferation in the pancreatic tissues with broken blood vessels and atrophy in the nucleus of hepatic cells with broken hepatic cells as compared to control. The details have been discussed in this paper.