Abstract
Plankton population of shrimp and shrimp-GIFT (Genetically Improved Farmed Tilapia) culture ponds were studied. The present study was carried out to estimate phytoplankton and zooplankton abundance and diversity in mono and polyculture systems. A total of 13 phytoplankton genera of cyanophyceae, chlorophyceae, bacillariophyceae, euglenophyceae, rhodophyceae and dinophyceae were recorded from the monoculture ponds while 12 phytoplankton genera were measured from shrimp-tilapia mixed culture ponds. Six genera of zooplankton under copepod, rotifer, cladocera, ostracoda were identified in monoculture system and 7 genera were found from polyculture ponds. The numbers of phytoplankton and zooplankton species were recorded to be significantly (p<0.05) higher in monoculture, compared to the polyculture system. In both culture systems, cyanophyceae of phytoplankton and copepod of zooplankton were the dominant groups.
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