Effect of cobalt-60 gamma radiation on reproductive disturbance in freshwater prawn (De Man, 1879).

The present study was designed to evaluate the effect of acute level of Co gamma radiation on fecundity of freshwater prawn . Prawns were exposed to four different dose levels (3, 30, 300 and 3000 mGy) and their reproductive disturbances i.e Gonadosomatic Index (GSI), Egg Clutch somatic Index (ESI), Egg Counts and Egg hatching rates were calculated.

Impact of chlorpyrifos on behavior and histopathological indices in different tissues of freshwater fish Channa punctatus (Bloch).

The present systematic experiment was conducted to estimate the impact of behavioral and pathological indices on freshwater fish Channa punctatus exposed to sub-lethal concentration (5 ppm) of an organophosphorus insecticide chlorpyrifos (CPF). Fish were segregated into four experimental groups (G1, control; G2, 10 days; G3, 20 days; and G4, 30 days exposure), each group comprises 15 fish in triplicate. The behavioral and histological changes were assessed in each group.

Effect of cobalt-60 gamma radiation on total hemocyte content and biochemical parameters in (De Man, 1879).

The effect of low level cobalt-60 (Co) gamma radiation on the freshwater prawn was evaluated by observing their hemocyte counts and biochemical parameters. Prawns were exposed to 3, 30, 300 and 3000 milligray (mGy) dose levels and their tissues of gills, hepatopancreas and muscle were analyzed. The results showed that the number of hemocytes in the hemolymph and concentrations of protein and carbohydrate were significantly reduced in irradiated groups than compared to the control prawn.