Boosting aquaculture resilience through biofloc-forming Bacteria: A comparative approach
Year: 2025
Type: article
Abstract: Maintaining optimal water parameters in a biofloc technology system is essential for ensuring the healthy growth, development, and survival of cultured aquatic organisms. Fluctuations in these parameters can negatively impact their health, growth performance, and overall survival rate. This study compares the effects of two biofloc-producing bacteria, Bacillus cereus and Klebsiella pneumoniae, on water quality. The experiment was conducted in sterilized lab environmental condition using Imhoff cones and aeration systems, with 10 ppt salinity water. Bacterial cultures were grown on nutrient agar plates and used as inoculums to initiate biofloc formation. The physical and chemical parameters of the water were analyzed every 24 hours. Results showed that both bacteria effectively produced bioflocs with varying concentrations over time. Bacillus cereus pH fluctuated, while Klebsiella pneumoniae pH remained stable. Both treatments increased total alkalinity, with Klebsiella pneumoniae significantly increasing, contradicting previous findings. Bacillus cereus maintained stable total hardness and improved dissolved oxygen concentrations, but caused a significant turbidity increase after floc deformation. Overall, Bacillus cereus biofloc producing bacteria are more stable comparing to Klebsiella pneumoniae and could be more suitable for the sustainable aquaculture system.
Source: Journal of Sea Research
Authors: Khadem Hussain Saeedi, Manjulatha Chapara, Jane Polyn P. Bejoc, S.K.K.A. Perera
Language: English
Subfield: Immunology
Field: Immunology and Microbiology
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $2,610
OpenAlex ID: W7093303351