ALTERATION OF BIOCHEMICAL PARAMETERS IN THE BREEDING CYCLE OF MYSTUS VITTATUS (BLOCH.) EXPOSED TO MUNICIPAL SEWAGE AT BASTI CITY (U.P.)

Biochemical disorder in fishes are intimately associated with inclusive physiological hindrance. Many types of biochemical faults and deformity in the metabolism of carbohydrates, Proteins, fats and Nucleic acids are finding in different tissue of environmentally  tressed fishes. The responsibility of gonadial tissue i.e. testes and ovary are upgrade many times during the breeding phase of the reproductive cycle of teleost fishes. Any biochemical deformity in their tissues would adversely affect the reproductive activity of fish population. Fresh water pollution mainly of the Kuwano river is caused by runoff from house drains, street disposal, sewage and effluents from small and large scale of industries situated nearby the river. On spot observations indicate that heavy fish mortality has been occurring in the areas in the river Kuwano contaminated by municipal sewage. The examined biochemical parameters were glycogen, amino acids, and cholesterol. The acute toxicity and bioassays of sewage exposed to test fish Mystus vittatus has been conducted for its three breeding phases i.e. pre-spawning, spawning and post-spawning.