@inproceedings{01KJYCWDGX5T3YWRP5140DP8VC,
  abstract     = {{Nutrient accumulation is a common issue in traditional shrimp culture systems, primarily resulting from inefficient feed management and the low assimilation efficiency of the cultured species. Yet, empirical data on nutrient dynamics in shrimp larval recirculating aquaculture systems (RAS) are scarce. This study conducted a 21-day trial comparing nutrient cycling, retention, and shrimp performance between a traditional batch hatchery system and a hatchery-scale RAS. Litopenaeus vannamei were reared from nauplius to postlarva 10 (PL10) stage in four tanks per treatment. Survival was low in both systems (7–9%), consistent with high mortality during early stages, and growth did not differ significantly. Shrimp assimilated only a small fraction of feed nutrients, particularly in RAS, likely due to feed losses. However, RAS maintained superior water quality, with markedly lower ammonia and phosphate concentrations through continuous filtration and biofiltration. In the batch system, ammonia accumulated until day 14 before nitrite and nitrate increased, indicating delayed nitrifying bacterial activity. Experimental data informed a nitrogen and phosphorus mass balance model: in the batch system, most nutrients remained in the water column (53.8% N; 65.0% P), whereas in RAS, concentrations were lower in the water sections, including incl. buffer tank etc. (22.1% N; 35.7% P), with a substantial portion unaccounted for. These findings highlight that while RAS improves water quality, its efficiency depends on enhanced feed retention via optimized formulations, precise delivery, or co-culture strategies.}},
  author       = {{Semmouri, Ilias and Nachtergale, Flor and Vermeylen, Vincent and Asselman, Jana and Declercq, Annelies and Janssen, Colin}},
  booktitle    = {{Book of abstracts : VLIZ Marine Science Day 2026}},
  issn         = {{1377-0950}},
  keywords     = {{Shrimp hatcheries,nutrient flows,eutrophication,aquaculture}},
  language     = {{eng}},
  location     = {{De Grote Post, Ostend, Belgium}},
  pages        = {{109--109}},
  title        = {{Evaluation of nutrient dynamics and performance of whiteleg shrimp larvae in conventional and recirculating hatchery systems}},
  url          = {{https://dx.doi.org/10.48470/131}},
  volume       = {{96}},
  year         = {{2026}},
}