Bioaugmentation with native Bacillus strains enhance nitrate and nitrite removal and reshape microbiomes in low-salinity shrimp cultures: Elucidating genetic mechanisms.

ABSTRACT: The intensification of shrimp farming contributes to the accumulation of toxic nitrogen compounds, which in turn affect productivity and complicates water quality management, especially under conditions of reduced salinity. This study evaluated the effects of 25% (CO, T2) and 50% (T1) water exchange, in combination with a bioaugmentation treatment using native Bacillus (T2), on nitrogen compound concentrations and bacterial community structure in Litopenaeus vannamei culture under reduced salinity conditions (4ppt). The results demonstrated that treatment with native Bacillus megaterium and Bacillus paralicheniformis (T2) leads to a significant reduction in nitrite and nitrate concentrations, reaching nearly 0 mg/L from day 4. In contrast, T1 and CO treatments showed markedly higher concen

SUBMITTER: Esquen Bayona DA 

PROVIDER: S-EPMC12788651 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature