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The diversity of plankton in growing-out ponds of tiger shrimp (Penaeus monodon Fabr) brood stocks candidates

Machluddin Amin*, Sahabuddin and Hidayat S. Suwoyo
Research Institute for Coastal Aquaculture
Jl. Makmur Dg. Sitakka No. 129 Maros, South Sulawesi
Indonesia, 90512

The research analysing the diversity of natural feed in ponds for growing-out the candidates of tiger shrimp brood stocks had been conducted. This study was conducted in the research installation of tiger shrimp hatchery situated in Barru Regency, Province of South Sulawesi which belongs to The Research Institute for Coastal Aquaculture. This study used a 4,000 m2 pond stocked with 10 ind/m2 of PL 22 which were reared for 2 months. One reservoir which is the source of clean water for the shrimp ponds also observed. Samples of plankton were collected by filtering 100 litres of pond water through a plankton net number 25.

More abundance plankton were observed in the grow out pond compared to that observed in reservoir indicating pond preparations such as the tillage, liming and fertilizing of pond bottoms triggered plankton growth. Zooplankton was 33 times more abundant compared to phytoplankton observed in the grow-out pond; whereas in the reservoir, the abundance of phytoplankton was two times higher compared to zooplankton (Table1).   

The Bacillariophyceae was the dominant phytoplankton found in the grow-out pond; whereas Crustacea was the major contributor for zooplankton composition in the grow-out ponds. This study also revealed that the community structure of plankton in grow-out and reservoir ponds formed by a moderate diversity of plankton which were relatively well distributed. Thus the community structure of plankton in the grow-out pond and reservoir was stable.  

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