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| PRELIMINARY STUDY ON THE RISE AND DECLINE OF THE DISSOLVED OXYGEN IN ARTIFICIAL SEAWATER FOR NURTURING PRAWN (PENAUS ORIENTALIS) SEEDS |
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| Abstract: |
| The changing mean velocities of the expended oxygen in artificial seawater used for nurturing prawn seeds are determined at pH (5.0-9.8), concentrations (1.56-7.98mg/L) of the dissolved oxygen and temperatures (15-36℃). The result shows that the expended oxygen is the highest, 0.13mg/L. h, if pH is most suitable. A correlation exists between the mean velocities of the expended oxygen, the concentration of the dissolved oxygen and thetemperatures, and the regression equations are v = 0.1278e-0.8876(mg/L. h), v=0.0568 + （0.1265）/（1+885.5e-0.3066) (mg/L. h) respectively. The mean velocity of the expended oxygen tends to be stable if concentration of the dissolved oxygen and temperature are suitable. The amount of expended oxygen in each larvae stage is determined, with the Z2 and p stages being the highest. |
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