Temperature variations and its impact on DNA content of fresh water fish oreochromis mossambicus

Aquatic biota is affected by the temperature of the surrounding water which influences the biochemical and physiological activities including food intake, growth rate, body temperature and other body functions. The present work deals with the effect of temperature on DNA content of fresh water fish Oreochromis mossambicus. The fishes were exposed to different temperatures such as 20°C, 24°C, 28°C, 32°C 36°C, and 40°C for 24, 48, 72 and 96 hours exposures respectively. The DNA content were decreased at both low temperature and high temperature as compared to control. The values of DNA content were expressed in mg/gm wet wt. of tissue and plotted graphically.