Water Quality And Plankton Production In Fertilized And Un-Fertilized Freshwater Fish Ponds

By : P. Elakkanai , A. Srinivasan , P. Padmavathi , S. Kavitha

Page No: 169-180

Abstract

Plankton are known to play an important role in all aquatic systems as they form basic food source for organisms of higher trophic level. The use of live-stock manure has an important role in fisheries. It has a direct relation with fish production. Cattle manure is generally used in fish ponds to enhance the plankton production and finally the fish. Physico-chemical parameters and nutrient status of the water body play an important role in governing the production of plankton which is the natural food for many species of fishes. During the study period, a total of 21 species of phytoplankton and 30 species of zooplankton recorded. Plankton are known to play an important role in all aquatic systems as they form basic food source for organisms of higher trophic level. The use of live-stock manure has an important role in fisheries. It has a direct relation with fish production. Cattle manure is generally used in fish ponds to enhance the plankton production and finally the fish. Physico-chemical parameters and nutrient status of the water body play an important role in governing the production of plankton which is the natural food for many species of fishes. During the study period, a total of 21 species of phytoplankton and 30 species of zooplankton recorded.

Authors :
P. Elakkanai, A. Srinivasan, P. Padmavathy and S. Kavitha 
Department of Fisheries Environment, Tamil Nadu Fisheries University, Fisheries College and Research Institute, Thoothukudi, Tamil Nadu.