The objective of this study was to evaluate tilapia, Oreochromis niloticus, for the biological control of suspended solids in an integrated biofloc technology (BFT) system rearing red drum, Sciaenops ocellatus, and Pacific white shrimp, Litopenaeus vannamei. Four integrated systems were structured with recirculating water in closed circuits composed of separate tanks for each species. The experiment compared the use of tilapia to control suspended solids (biological treatment [BT]) to control systems without tilapia. The initial mean weights and stocking densities were: 2 g and 250 ind/m³ for shrimp; 71 g and 1.04 kg/m³ for red drum; and 85 g and 5.12 kg/m³ for tilapia. Temperature, dissolved oxygen (DO), pH, alkalinity, salinity, total suspended solids, total ammonia nitrogen (TA-N), and nitrite were measured. Temperature, DO, pH, alkalinity, and TA-N were maintained within guidelines recommended for shrimp, red drum, and tilapia. Nitrite concentrations remained within guidelines for red drum and tilapia. No significant difference in growth performance between the control and BT was observed, but the apparent consumption of solids in systems with tilapia resulted in decreased particulate matter in the effluent compared to the control. The study showed that the tilapia could control the suspended solids when integrated with red drum and marine shrimp culture with BFT in an integrated multitrophic system.

中文翻译：

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太平洋白虾、红鼓虾和罗非鱼集成在生物絮凝系统中：使用罗非鱼作为总悬浮固体的消费者

本研究的目的是评估罗非鱼Oreochromis niloticus在综合生物絮凝技术 (BFT) 系统中对悬浮固体的生物控制，该系统养殖红鼓虾、Sciaenops ocellatus和太平洋白虾、凡纳滨对虾。四个集成系统采用封闭回路中的循环水构成，每个物种由单独的水箱组成。该实验比较了使用罗非鱼控制悬浮固体（生物处理 [BT]）与没有罗非鱼的控制系统。初始平均重量和放养密度为： 2 克和 250 ind/m ³虾；71 g 和 1.04 kg/m ³用于红桶；和 85 g 和 5.12 kg/m ³对于罗非鱼。测量了温度、溶解氧 (DO)、pH、碱度、盐度、总悬浮固体、总氨氮 (TA-N) 和亚硝酸盐。温度、溶解氧、pH、碱度和 TA-N 保持在推荐给虾、红鼓和罗非鱼的指南范围内。亚硝酸盐浓度保持在红鼓和罗非鱼的指导方针内。观察到对照和 BT 之间的生长性能没有显着差异，但与对照相比，罗非鱼系统中固体的表观消耗导致流出物中的颗粒物质减少。研究表明，将罗非鱼与红鼓和带 BFT 的海水对虾养殖结合在一个综合多营养系统中时，可以控制悬浮固体。