Impact of ingested microplastics on phenotypic traits and biochemical parameters in Nile tilapia (Oreochromis niloticus) juvenile

IF 2.4 3区农林科学 Q2 FISHERIES

Aquaculture International Pub Date : 2025-03-11 DOI:10.1007/s10499-025-01891-3

Sheikh Mustafizur Rahman, Fatima Tuz Zohora, Tania Sultana Mohona, Momotaz Khanom, Md. Moshiur Rahman, Md. Golam Sarower, Muhammad Abdur Rouf, Md. Nazrul Islam, Roshmon Thomas Mathew, Yousef Ahmed Alkhamis, Yousof Naser Alrashada, Lamya Ahmed Alkeridis, El-Sayed Hemdan Eissa, Sameh A. Abdelnour

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引用次数: 0

Abstract

The widespread contamination of aquatic environments by microplastics (MPs), alongside other pollutants, has emerged as a critical global concern, posing significant risks to fish populations. This study investigated the impacts of microplastic ingestion on the phenotypic traits, survival rates, and antioxidant activities of juvenile Nile tilapia (Oreochromis niloticus). Three experimental groups were established: (T1) a control group fed a standard commercial diet (4% of body weight) twice daily, (T2) a group fed a mixed diet of 2% commercial pellets and 2% MPs twice daily, and (T3) a group fed 4% commercial pellets on the first day, no feed on the second day, and 4% MPs added directly to the water on the third day. Results demonstrated that tilapia exposed to MPs exhibited significantly lower survival rates, decreased body weight, reduced standard length, smaller eye diameters, and diminished body areas compared to the control group (P < 0.05). Furthermore, MP-exposed fish displayed elevated superoxide dismutase (SOD) activity and reduced catalase activity, indicating altered antioxidant defense mechanisms. Proximate analysis revealed no significant differences in crude protein, moisture, and lipid content among the groups (P > 0.05), except for ash content, which was significantly higher in MP-exposed fish (P < 0.01). Geometric morphometric analysis did not reveal significant shape variations among the groups (P > 0.05), although the control group exhibited a significantly larger centroid size (an indicator of overall body size) than the MP-exposed groups (P < 0.05). These findings suggest that microplastic ingestion can have detrimental effects on the survival, growth, antioxidant status, and body composition of juvenile tilapia. This study underscores the critical need to consider the potential impacts of microplastic pollution on tilapia farming practices in the open water system.

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摄入微塑料对尼罗罗非鱼幼鱼表型性状和生化参数的影响

微塑料（MPs）和其他污染物对水生环境的广泛污染已成为全球关注的一个重大问题，对鱼类种群构成重大风险。研究了微塑料摄食对尼罗罗非鱼（Oreochromis niloticus）幼鱼表型性状、存活率和抗氧化活性的影响。设3个试验组：（T1）对照组饲喂标准商品饲粮（体重的4%），每天2次；（T2）组饲喂2%商品饲粮与2% MPs的混合饲粮，每天2次；（T3）组第1天饲喂4%商品饲粮，第2天不饲喂，第3天将4% MPs直接添加到水中。结果表明，与对照组相比，暴露于MPs的罗非鱼存活率显著降低，体重下降，标准长度缩短，眼直径变小，体面积减小（P < 0.05）。此外，暴露于mp的鱼表现出超氧化物歧化酶（SOD）活性升高和过氧化氢酶活性降低，表明抗氧化防御机制发生了改变。近似分析显示，各组间粗蛋白质、水分和脂肪含量均无显著差异（P > 0.05），但灰分含量显著高于暴露于mp的鱼（P < 0.01）。几何形态计量学分析没有显示各组之间的显著形状变化（P > 0.05），尽管对照组的质心大小（整体体型的一个指标）明显大于mp暴露组（P < 0.05）。这些发现表明，微塑料摄入会对罗非鱼幼鱼的生存、生长、抗氧化状态和身体组成产生不利影响。这项研究强调了考虑微塑料污染对开放水域罗非鱼养殖方式的潜在影响的迫切需要。

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来源期刊

Aquaculture International 农林科学-渔业

CiteScore

5.10

自引率

6.90%

发文量

204

审稿时长

1.0 months

期刊介绍： Aquaculture International is an international journal publishing original research papers, short communications, technical notes and review papers on all aspects of aquaculture. The Journal covers topics such as the biology, physiology, pathology and genetics of cultured fish, crustaceans, molluscs and plants, especially new species; water quality of supply systems, fluctuations in water quality within farms and the environmental impacts of aquacultural operations; nutrition, feeding and stocking practices, especially as they affect the health and growth rates of cultured species; sustainable production techniques; bioengineering studies on the design and management of offshore and land-based systems; the improvement of quality and marketing of farmed products; sociological and societal impacts of aquaculture, and more. This is the official Journal of the European Aquaculture Society.