COMPARATIVE STUDY ON THE PHYSICOCHEMICAL CHARACTERISTICS OF PENAEUS MONODON CULTURE PONDS ALONG THE SOUTH EAST COAST OF TAMIL NADU

Abstract

Marine shrimp farming is a century-old practice in many Asian countries. Until a decade ago, this commodity was generally considered a secondary crop in traditional fish farming practices. In the traditional farming system, the ponds are stocked with fry either collected from the wild or concentrated through tidal water entering the ponds. Some improvements of the traditional farming methods have been made in the past years. In Aquaculture quality of water is one of the most important factors. The various physic chemical parameters of the unaffected and outbreak shrimp culture ponds were analysed. The parameters such as the pH and COD were significantly high (p≥5). But the salinity, DO, BOD, Calcium, Chloride, nitrate, phosphate 8#x38; iron of the unaffected and outbreak ponds were significantly low (p≤ 5). Bacteria analysis of the unaffected ponds was very low but the outbreak ponds showed enormously higher counts. The blue green algae and Diatoms of unaffected and outbreak ponds were found to be significantly low (p≤ 5).