Tilapia culture in trinidad and tobago: yet another update

Download 1.98 Mb.
Size1.98 Mb.
1   ...   77   78   79   80   81   82   83   84   ...   89
Literature review

The natural productivity of a fish culture system depends largely on the availability of natural food organisms and on favorable environmental conditions for the fish.

Phytoplankton, the floating microscopic plants that give water its green color, are the first step in the food chain of fish ponds. Other organisms also feed on them and multiply, increasing the availability of natural food for fish stocked in the pond. In addition to carbon dioxide (C02) , water and sunlight for carbohydrate synthesis, phytoplankton need mineral elements including nitrogen, phosphorus, potassium, calcium, sulfur, iron, manganese, copper and zinc for their growth and nutrition. To promote phytoplankton growth and maintain the optimum natural productivity of ponds, the water must contain adequate amounts of these nutrients.

Share with your friends:
1   ...   77   78   79   80   81   82   83   84   ...   89

The database is protected by copyright ©essaydocs.org 2020
send message

    Main page