Understanding the shrimp behavior, shrimp oxygen consumption, and sediment oxygen demand in a culture tank could contribute to the improvement of L. vannamei culture. The objective of the study was to evaluate the influence of sediment redox potential on the white shrimp behaviour. Shrimp with an average body weight of 7.27 ± 1.20 g were distributed in tanks containing substrate at different redox potential (+100, -106, and -210 mV). Subsequently, the vertical distribution of the shrimp were observed directly at 1 h interval. We found that the sediment redox potential did not affect the behaviour of the shrimp and the percentage of shrimp that stayed on the bottom was ranged from 72 to 81%. Shrimp oxygen consumption (OC) rate was 0.33 ± 0.06 g O2 kg-1 h-1 . The levels of SOD in the treatment tanks were 7.78 ± 1.67 mg O2 m-2 h-1, 12.22 ± 0.96 mg O2 m-2 h-1 and 27.22 ± 0.96 mg O2 m-2 h-1 for the RP+100 mV, RP-106 mV and RP-210 mV respectively.
Keywords: L. vannamei, oxygen consumption, sediment oxygen demand, sediment redox potential