Toxic effects of aluminium salts to fish Cyprinus carpio

Abstract

The common carp (Cyprinus carpio) was exposed to three different Aluminium salts, AlCl3, Al2(SO4)3 and Al (OH)3 to determine the lethal concentration (LC50) values at different times and effects of sub-lethal concentrations on blood glucose and serum calcium levels were estimated. The LC50 values at varying times 24hr, 48hr, 72hr and 96 hr were recorded for three Aluminum salts. The LC50 value of 96 hr for AlCl3, Al2 (SO4)3 and Al (OH)3 was found as 3.580 ppm, 5.902ppm and 4.786ppm respectively. Fishes exposed to sub-lethal concentrations of the three Aluminium salts (1/4th of the LC50 for 96 hrs) for 30 days revealed that biochemical parameter like glucose increased significantly (p