Application of electrochemically treated seawater for cultivation of early life stage of golden pompano (Trachinotus ovatus)

IF 3.9 1区农林科学 Q1 FISHERIES

Aquaculture Pub Date : 2025-07-10 DOI:10.1016/j.aquaculture.2025.742946

Yang Yang , Qiongyu Chen , Mengmeng Chen , Zhennian Chen , Zhijia Luo , Cun Wei , Zining Meng

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引用次数: 0

Abstract

Electrochemical technology was considered as eco-friendly and low operating cost for water treatment. In the research, the effect of electrolysis on seawater quality parameters, ability of disinfection and effect of turbidity were analyzed. Subsequently, effects of electrochemically treated seawater on early life stage of golden pompano golden were analyzed to obtain safety evaluation. As a result, with the increase of electric current, the pH and available chlorine gradually increased, oxidation reduction potential (ORP) firstly decreased and then increased, dissolved oxygen gradually decreased. After aeration for 24 h, the ORP returned to normal level. Electrolytic treatment accelerated the clarification of seawater significantly. Based on the result incubation in TCBS and CBA agar plate, bacteria in electrochemically treated seawater were significantly decrease, sterilizing rate of the negative-gram bacteria reached to 100 % under a operating current of 40 A. Hatchability, survival rate of yolk-sac larvae, larvae at first feeding stage and juvenile fish were decrease in electrochemically treated seawater, there were highest mortality in stage of larvae at first feeding and lowest mortality in juvenile fish bred in treated seawater. Growth traits of treated group were higher than these of control group, among of these growth traits, differences of body depth and fatness reached to significant. Reduced glutathione of fish in normal seawater was significantly lower than that of fish in electrolysis treated seawater. Oxidized glutathione was opposite. In general, electrochemically technology possesses positive effects on seawater parameters and disinfection. However, the electrolysis of seawater might result in negative effect on fish in early development stage. This research provided the insight of application of electrochemically treated seawater on aquaculture.

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电化学处理海水在卵形鲳鲹（Trachinotus ovatus）早期养殖中的应用

电化学技术被认为是一种环境友好、运行成本低的水处理技术。研究分析了电解对海水水质参数、消毒能力和浊度的影响。随后，对电化学处理后的海水对金鲳鱼早期生命期的影响进行了分析，得出了安全性评价。结果表明，随着电流的增大，pH和有效氯逐渐增大，氧化还原电位（ORP）先减小后增大，溶解氧逐渐减小。通气24h后，ORP恢复正常。电解处理明显加快了海水的澄清速度。结果表明，在TCBS和CBA琼脂平板上孵育，电化学处理后的海水中细菌数量明显减少，在40 a的工作电流下，阴性革兰氏菌的灭菌率达到100%。电化学处理的海水降低了黄囊仔鱼的孵化率和成活率，降低了初食期仔鱼和幼鱼的存活率，使初食期仔鱼的死亡率最高，处理过的海水中仔鱼的死亡率最低。处理组的生长性状高于对照组，其中体深和脂肪度差异达到极显著水平。正常海水中鱼的还原性谷胱甘肽显著低于电解海水中鱼的还原性谷胱甘肽。氧化谷胱甘肽则相反。总的来说，电化学技术对海水参数和消毒都有积极的影响。然而，海水的电解可能对鱼类早期发育产生负面影响。本研究为电化学处理海水在水产养殖中的应用提供了新的思路。

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来源期刊

Aquaculture 农林科学-海洋与淡水生物学

CiteScore

8.60

自引率

17.80%

发文量

1246

审稿时长

56 days

期刊介绍： Aquaculture is an international journal for the exploration, improvement and management of all freshwater and marine food resources. It publishes novel and innovative research of world-wide interest on farming of aquatic organisms, which includes finfish, mollusks, crustaceans and aquatic plants for human consumption. Research on ornamentals is not a focus of the Journal. Aquaculture only publishes papers with a clear relevance to improving aquaculture practices or a potential application.