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<p>In aquaculture, microorganisms are widely used to regulate the accumulation of nitrite in aquaculture water. The addition of carbon sources not only affects the removal efficiency of nitrite, but also affects the composition of microbial community in aquaculture water. In this study, the yeast <i>Wickerhamomyces anomalus</i> RZWP01, which can efficiently remove nitrite, was taken as the research object, and glucose and D-Mannose were used as carbon sources to study the removal rate of nitrite and the changes of microbial community in water. It was found that in the case of using glucose as the sole carbon source, more than 95% nitrite was removed within 12&#xa0;h, and the microbial community also changed. <i>Vibrio cholerae</i>, a common harmful bacterium in mariculture, has grown rapidly and became the dominant bacterium. Using Biolog metabolic phenotyping technology, 190 carbon source metabolic phenotypes of <i>W. anomalus</i> RZWP01 and <i>V. cholerae</i> RZ1 were analyzed, and it was found that <i>W. anomalus</i> RZWP01 and <i>V. cholerae</i> RZ1 had higher utilization rates of D-Mannose. There are significant differences. Then, D-Mannose was used instead of glucose as the carbon source, and it was found that 95% of nitrite was removed within 24&#xa0;h, reaching the nitrite removal rate when glucose was the only carbon source, and the yellow arc in the microbial community in the culture water was achieved. Bacteria and other harmful microorganisms did not increase significantly. The results of this study indicated that D-Mannose can be used as an alternative carbon source for offshore shrimp farming.</p>

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Effects of carbon sources on nitrite removal and microbial diversity in mariculture water

  • 期刊论文

  • 发表日期：

    2025年5月21日

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  • Zhen Ding,
  • Meiling An,
  • Hongli Xu,
  • Zhongping Xu,
  • Ning Fu,
  • Lushan Wang,
  • Li Zhang,
  • Guoping Li

摘要

In aquaculture, microorganisms are widely used to regulate the accumulation of nitrite in aquaculture water. The addition of carbon sources not only affects the removal efficiency of nitrite, but also affects the composition of microbial community in aquaculture water. In this study, the yeast Wickerhamomyces anomalus RZWP01, which can efficiently remove nitrite, was taken as the research object, and glucose and D-Mannose were used as carbon sources to study the removal rate of nitrite and the changes of microbial community in water. It was found that in the case of using glucose as the sole carbon source, more than 95% nitrite was removed within 12 h, and the microbial community also changed. Vibrio cholerae, a common harmful bacterium in mariculture, has grown rapidly and became the dominant bacterium. Using Biolog metabolic phenotyping technology, 190 carbon source metabolic phenotypes of W. anomalus RZWP01 and V. cholerae RZ1 were analyzed, and it was found that W. anomalus RZWP01 and V. cholerae RZ1 had higher utilization rates of D-Mannose. There are significant differences. Then, D-Mannose was used instead of glucose as the carbon source, and it was found that 95% of nitrite was removed within 24 h, reaching the nitrite removal rate when glucose was the only carbon source, and the yellow arc in the microbial community in the culture water was achieved. Bacteria and other harmful microorganisms did not increase significantly. The results of this study indicated that D-Mannose can be used as an alternative carbon source for offshore shrimp farming.