渔业现代化

渔业现代化 ›› 2025, Vol. 52 ›› Issue (6): 81-87. doi: 10.26958/j.cnki.1007-9580.2025.06.010

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大菱鲆(Scophthalmus maximus) 循环水育苗系统运行效果研究

(1 Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Equipment and Engineering Technology, MARA, Shanghai 200092, China；
2 Qingdao Blue Granary Ltd, Qingdao 266500, Shandong, China)
  

  1. (1中国水产科学研究院渔业机械仪器研究所，农业农村部渔业装备与工程技术重点实验室,上海200092；
    2青岛蓝色粮仓海洋渔业发展有限公司,山东 青岛266500)
  • 出版日期:2025-12-20 发布日期:2025-12-26
  • 通讯作者: 刘晃（1973—），男，研究员，研究方向：渔业装备与工程技术。E-mail: liuhuang@fmiri.ac.cn
  • 作者简介:黄达（1994—），男，硕士，助理研究员，研究方向:渔业装备与工程技术。E-mail: huangda@fmiri.ac.cn
  • 基金资助:
    国家重点研发计划“东海滩涂碳汇型生态高效养殖关键技术与装备（2024YFD2401703）”；国家海水鱼产业技术体系(CARS-47-G20)；中国水产科学研究院科技创新团队项目（2023TD83）；中国水产科学研究院渔业机械仪器研究所中央级公益性科研院所基本科研业务费专项资金资助（2024YJS012）

Evaluation of the operational efficiency of turbot (Scophthalmus maximus) larval rearing in a recirculating aquaculture system (RAS)

  • Online:2025-12-20 Published:2025-12-26

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摘要： 为推广循环水育苗系统提供理论依据，开展了循环水养殖系统（RAS）在大菱鲆苗种培育生产过程中应用的可行性研究。对比分析循环水养殖系统（RAS）与流水育苗系统（FTS）的水环境参数、仔稚鱼生长性能及经济效益，系统分析了两种育苗系统的差异。结果显示：育苗期水温维持在15.7~22.6℃，溶氧5.6~8.6 mg/L，平均pH为8.27，水质状况稳定；FTS组总氨氮（TAN）平均质量浓度为（0.179±0.087）mg/L，显著低于RAS组的（0.272±0.167）mg/L（P<0.01）；FTS组亚硝酸盐氮质量浓度（0.017±0.010）mg/L低于RAS组（0.112±0.087）mg/L。RAS组稚鱼平均全长65.7 mm，平均体质量（1.63±0.17）g，出苗率37.2%；均高于FTS组的52.1 mm、（1.49±0.18）g和30.4%。RAS系统单茬利润2.27万元，年利润9.08万元（按年4茬计）；FTS系统单茬利润2.05万元，年利润6.15万元（按年3茬计）。循环水育苗系统具备高效的水处理能力、显著的育苗成效及良好的经济效益，具有推广应用价值。

关键词: 大菱鲆, 循环水系统, 流水系统, 育苗效果

Abstract: To investigate the feasibility of applying a Recirculating Aquaculture System (RAS) in the hatchery production of turbot (Scophthalmus maximus) and provide a theoretical foundation for promoting RAS-based hatchery systems. A comparative analysis was conducted between the recirculating aquaculture system (RAS) and the flow-through aquaculture system (FTS) regarding water quality parameters, growth performance of larvae and juveniles, and economic efficiency. Water quality monitoring indicated: temperature ranged from 15.7°C to 22.6°C, dissolved oxygen (DO) from 5.6 mg/L to 8.6 mg/L, and the average pH was 8.27, indicating stable water quality. The average total ammonia nitrogen (TAN) concentration in the FTS group [(0.179 ± 0.087) mg/L] was significantly lower than that in the RAS group [(0.272 ± 0.167) mg/L, P < 0.01], while the average nitrite nitrogen concentration in the FTS group [(0.017 ± 0.010) mg/L] was also lower than that in the RAS group [(0.112 ± 0.087) mg/L]. The RAS group achieved greater larval performance, with an average total length of 65.7 mm, an average body weight of (1.63 ± 0.17) g, and a survival rate of 37.2%, compared with 52.1 mm, (1.49 ± 0.18) g, and 30.4% in the FTS group. Economic analysis demonstrated: profit per production cycle reached 22,700 CNY for RAS and 20,500 CNY for FTS, translating to annual profits of 90,800 CNY (4 cycles/year) and 61,500 CNY (3 cycles/year), respectively. The RAS-based seedling rearing system demonstrated effective water treatment performance and yielded favorable turbot seedling production outcomes. This model exhibits significant potential for application and promotion.

Key words: turbot(Scophthalmus maximus), recirculating aquaculture system (RAS), flow-through aquaculture system(FTS), hatchery effect