刺参养殖池塘益生菌的筛选

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中图分类号：S968.9 文献标志码：A 文章编号：1004—6755（2026）04-0023—03

Selection of probiotics for Apostichopus japonicus cultivation ponds

LI Nan，CHEN Junwei， ZHAO Yudi， TIAN Yi，CHANG Yaqing （Collegeof FisheriesandLife Sciences，Dalian Ocean University，Dalian116ooo，China）

Abstract：To screen probiotics beneficial to Apostichopus japonicus， this study took water samples from Apostichopus japonicus aquaculture ponds as the research object， and used nitrite degradation rate as indicators to screen probiotics from sea cucumber aquaculture ponds.The results showed that 32 nitrite一degrading bacteria were isolated. After 24h of culture in the medium containing 100mg/L sodium nitrite，the degradation rate of strain 2- N23 on sodium nitrite was 93.49% ，and that of strain 2- N21 was 90.83% . The results show that strains 2- N23 and 2-N21 exhibit promising potential for the degradation of sodium nitrite， providing candidate strains for the development and production of probiotics.

Key words：Apostichopus japonicus ; probiotics; nitrite; microecological preparation

亚硝酸盐含量是检测养殖池塘中水质的常见指标之一，是自然界中最普遍的含氮化合物[1]亚硝酸盐积累在鱼类的体内容易使其血液的输氧能力降低，从而导致免疫力下降2]。（剩余3614字）