Establishment and performance of sea purslane (Sesuvium portulacastrum) in marine aquaponics with hybrid grouper

IF 3.6 2区农林科学 Q2 AGRICULTURAL ENGINEERING

Aquacultural Engineering Pub Date : 2025-03-08 DOI:10.1016/j.aquaeng.2025.102530

Miaofeng Yang , Yongqing Lin , Shenghua Zheng , Huidong Zheng , Fang Yang , Yingyu Xi , Donglian Luo

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引用次数: 0

Abstract

Aquaponic systems are sustainable and environmentally friendly, primarily through the recycling of nutrients. However, identifying feasible combinations that achieve favorable economic and environmental performance in a winwin mariculture system can be challenging. A novel aquaponic mariculture system was established by combining sea purslane (Sesuvium portulacastrum) with hybrid grouper (Epinephelus sp.), and its performance was assessed. Triplicate experimental fish ponds assembled with floating plant beds of sea purslane (SP group) were compared with the control (without phytotreatment, CK group) over a 56-day experimental period. The changes in major pollutants in the system and the growth performance of the plants and groupers were analyzed. The results showed that the removal rates of pollutants in the sea purslane aquaponic system were 98.1 %, 97.5 %, 89.9 % and 50.6 % for total ammonia nitrogen (TAN), nitrite nitrogen, total suspended solids (TSS) and chemical oxygen demand (COD), respectively. Furthermore, the removal rates of total nitrogen (TN), total phosphorus (TP), dissolved inorganic nitrogen (DIN), and dissolved inorganic phosphorus (DIP) were 19.6 %, 12.0 %, 18.4 % and 16.2 %, respectively, in the SP group. With respect to growth performance, the specific growth rate (SGR) of groupers in the SP group increased by 43 % compared with that in the CK group. Grouper growth in the SP group showed strong negative allometric growth, whereas isometric growth was observed in the CK group. The net growth of sea purslane increased by 4.32 ± 1.64 kg/m², with a relative growth rate of 0.90 ± 0.28 %/d, showing considerable incorporation of carbon via photosynthesis. Moreover, the sea purslane–grouper aquaponics system can be maintained at a low cost and is easily managed. In conclusion, the potential of this innovative marine aquaponic system was demonstrated, and the findings will contribute to enhancing the performance of environmentally friendly mariculture techniques in the future.

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马齿苋（Sesuvium portulacastrum）与杂交石斑鱼共生的建立与性能

水培系统是可持续的和环境友好的，主要是通过养分的循环利用。然而，在双赢的海水养殖系统中，确定可行的组合以实现有利的经济和环境绩效可能具有挑战性。以马齿苋（Sesuvium portulacastrum）和杂交石斑鱼（Epinephelus sp.）为原料，建立了一种新型的水共生海水养殖系统，并对其性能进行了评价。在56 d的试验期内，将装有马齿苋浮植床的3个试验鱼塘（SP组）与对照（CK组）进行比较。分析了系统中主要污染物的变化以及植物和石斑鱼的生长性能。结果表明：马齿苋水培系统对总氨氮（TAN）、亚硝酸盐氮（亚硝酸盐氮）、总悬浮物（TSS）和化学需氧量（COD）的去除率分别为98.1% %、97.5% %、89.9% %和50.6% %。SP组对总氮（TN）、总磷（TP）、溶解无机氮（DIN）和溶解无机磷（DIP）的去除率分别为19.6 %、12.0 %、18.4 %和16.2 %。在生长性能方面，SP组石斑鱼的特定生长率（SGR）比CK组提高了43 %。SP组石斑鱼生长表现为较强的负异速生长，而CK组石斑鱼生长表现为等速生长。马齿苋的净生长量增加了4.32 ± 1.64 kg/m2，相对生长率为0.90 ± 0.28 %/d，表明通过光合作用吸收了大量碳。此外，马齿苋-石斑鱼共生系统成本低，易于管理。总之，这种创新的海洋水共生系统的潜力得到了证明，研究结果将有助于提高未来环境友好型海水养殖技术的性能。

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来源期刊

Aquacultural Engineering 农林科学-农业工程

CiteScore

8.60

自引率

10.00%

发文量

审稿时长

>24 weeks

期刊介绍： Aquacultural Engineering is concerned with the design and development of effective aquacultural systems for marine and freshwater facilities. The journal aims to apply the knowledge gained from basic research which potentially can be translated into commercial operations. Problems of scale-up and application of research data involve many parameters, both physical and biological, making it difficult to anticipate the interaction between the unit processes and the cultured animals. Aquacultural Engineering aims to develop this bioengineering interface for aquaculture and welcomes contributions in the following areas: – Engineering and design of aquaculture facilities – Engineering-based research studies – Construction experience and techniques – In-service experience, commissioning, operation – Materials selection and their uses – Quantification of biological data and constraints