EFFECT OF SUBLETHAL CONCENTRATIONS OF CADMIUM OF THE GILLS OF AN ESTUARINE EDIBLE FISH BOLEOPHTHALMUS DUSSUMIERI (CUV)KAPILA NIANOJ AND G. RAGOTHAMANAbstract The toxic effect of cadmium on the gills of Boleophthalmus dussumieri, the edible estuarine fish is evaluated. Three sublethal concentrations of cadmium (0.5, 1 and 1.5 ppm.) were used for experiments revealed severe changes in the histology of gills which led to the disturbance in basement membrane, degeneration of gill lamella, cyst formation, swelling of base, increased interlamellar space etc. All these changes finally caused the [allure of the respiratory mechanism which resulted into the death of test fish.
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