Abstract:
Monitoring study on phytoplankton and zooplankton communities and production of Giant tiger prawn, were carried out during 4 January to 12 May 1991. The pond was 3.8 rai (6,080 spuare meter) in area with intensive management. Results showed that blue-green alge and iatom are the major component of phytoplankton while copepod and decapod larve are of zooplankton. Stocking density of the study was 50 prawns/square meter. After rearing periods, the final size of prawn was 25 grams with yield 1,368 Kg./Rai Survival rate and Food Conversion Ratio were 62.4% and 1.474 respectively. The result indicated that rearing is success.From statistical analysis, the results indicated that phytoplankton do not show significant relationship with growth of shrimp. Bur zooplankton show significant negative relationship. To improve efficiency of rearing, density of zooplankton should be considered.