@article{01J03VAM3DYTRZB9WNKEM5QZ5P,
  abstract     = {{Shrimp are commonly cultured in earthen aquaculture ponds where organic-rich uneaten
feed and faeces accumulate on and in the sediment to form anaerobic zones.
Since the pond water is rich in sulphate, these anaerobic conditions eventually lead to
the production of sulphide. Sulphides are toxic and even lethal to the shrimp that live
on the pond sediment, but physicochemical and microbial reactions that occur during
the accumulation of organic waste and the subsequent formation of sulphide in shrimp
pond sediments remain unclear. Molybdate treatment is a promising strategy to inhibit
sulphate reduction, thus, preventing sulphide accumulation. We used an experimental
shrimp pond model to simulate the organic waste accumulation and sulphide formation
during the final 61 days of a full shrimp growth cycle. Sodium molybdate (5 and 25 mg/L
Na2MoO4.2H2O) was applied as a preventive strategy to control sulphide production
before oxygen depletion. Molybdate addition partially mitigated H2S production in the
sediment, and delayed its transfer to the bulk liquid by pushing the higher sulphide concentration
zone towards deeper sediment layers. Molybdate treatment at 25 mg/L significantly
impacted the overall microbial community composition and treated samples (5
and 25 mg/L molybdate) had about 50% higher relative abundance of sulphate reducing
bacteria than the control (no molybdate) treatment. In conclusion, molybdate has the
potential to work as mitigation strategy against sulphide accumulation in the sediment
during shrimp growth by directly steering the microbial community in a shrimp pond
system.}},
  articleno    = {{e50}},
  author       = {{Torun, Funda and Hostins, Barbara and De Schryver, Peter and Boon, Nico and De Vrieze, Jo}},
  issn         = {{2804-3871}},
  journal      = {{PEER COMMUNITY JOURNAL}},
  keywords     = {{Aquaculture,H2S,Molybdate,Shrimp growth,Sulphate reduction,Sulphide toxicity,SULFATE-REDUCING BACTERIA,REDUCTION,DESULFOVIBRIO}},
  language     = {{eng}},
  pages        = {{16}},
  title        = {{Molybdate delays sulphide formation in the sediment and transfer to the bulk liquid in a model shrimp pond}},
  url          = {{http://doi.org/10.24072/pcjournal.421}},
  volume       = {{4}},
  year         = {{2024}},
}

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