This study aimed to evaluate the performance of the red alga Gracilariopsis tenuifrons as a biofilter in a multi-trophic cultivation system with Litopenaeus vannamei, using recirculation by zero water exchange. The species were cultivated for 4 weeks, while measurements were taken of the chemical and physical characteristics of water, the development of the cultivated organisms (biomass and growth rate), and the carbon, nitrogen, and phosphorus content assimilated by the seaweeds. The water enrichment produced by shrimp farming favored the seaweed development, which increased on average by 2.6 % day^-1 ± 0.24 (0.4 to 4.08 % day^-1). The seaweed species was able to remove up to 35.1% of the ammonium ion and increased its tissue nitrogen by about 4.8 times by the end of the experiment (1.2–4.8%). The shrimp presented an increase in biomass (8.0 to 12.7 g), with an average growth rate of 1.7% day^-1 ± 0.1 and a survival of 100% at the end of the experiment. Based on these results, the cultivation of L. vannamei in a recirculating water system using Gp. tenuifrons as a biofilter can be an advantageous alternative, helping to reduce water usage and remove the main metabolites produced by shrimp cultivation.

本研究旨在评估红藻的性能Gracilariopsis tenuifrons在与多营养养殖系统生物过滤凡纳滨对虾，利用再循环由零换水。将该物种培养了4周，同时测量了水的化学和物理特性，培养的生物的发育（生物量和生长速率）以及海藻吸收的碳，氮和磷含量。虾类养殖产生的水富集有利于海藻的生长，在第^-1天平均增加2.6％±0.24（第^-1天0.4到4.08％）。到实验结束时，海藻物种能够去除高达35.1％的铵离子，并使组织中的氮增加约4.8倍（1.2–4.8％）。虾的生物量增加了（8.0至12.7 g），在第^-1天±0.1天的平均增长率为1.7％，在实验结束时存活率为100％。基于这些结果，使用Gp在循环水系统中种植南美白对虾。腱瑞生物过滤器可能是一种有利的替代方法，有助于减少用水量并去除虾类养殖产生的主要代谢产物。