Levels and Classification of Microplastics and Their Impact on the Wellbeing of Selected Commercially Important Fish Species in Kisumu Bay, Lake Victoria.

IF 2.7 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Bulletin of Environmental Contamination and Toxicology Pub Date : 2024-11-05 DOI:10.1007/s00128-024-03976-w
Sylvia Wanjiku Gathu, Nzula Kivuva Kitaka, Lewis Morara Sitoki, Elick Onyango Otachi
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Abstract

Microplastics (MPs) are emerging pollutants of concern in aquatic ecosystems. Fish ingest MPs accidentally during normal feeding because they resemble prey or by ingesting prey that previously consumed them. Despite severe plastic pollution in Africa, some countries, including Kenya have implemented laws to curb this pollution menace. MPs have scantly been studied in African freshwaters. This study provides empirical data and describes the levels of MPs in four commercially important fish species in Lake Victoria. A total of 95 fish samples were collected from four sampling sites (inshore-offshore waters) between March and May 2022. Microscopy and Attenuated Total Reflectance Fourier Transformed Infrared (ATR-FTIR) spectroscopy methods were used to identify MPs. In this study, 62 out of 95 (65.26%) of the gastrointestinal tracts of the sampled fish contained MPs. The four species showed different proportions of detected MPs among the sampled individuals: 75.00% (Clarias gariepinus), 75.00% (Synodontis victoriae), 71.43% (Lates niloticus), and 59.26% (Oreochromis niloticus). Polystyrene (PS) and poly (perfluorobutadiene) were the main plastic polymers in the fish samples. The condition factors estimated for O. niloticus, S. victoriae, and L. niloticus were > 1 and < 1 for C. gariepinus, respectively. Positive correlations were observed between microplastic numbers and fish length and microplastic numbers and fish weight. However, the low R2 values obtained implied no strong relationship exists between these parameters. These findings provide evidence of microplastic contamination in fish in Kisumu Bay.

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维多利亚湖基苏木湾微塑料的含量和分类及其对某些重要商业鱼类的影响。
微塑料(MPs)是水生生态系统中新出现的令人担忧的污染物。鱼类在正常摄食过程中会因为微塑料与猎物相似而意外摄入微塑料,或者因为摄入了之前吃掉它们的猎物而摄入微塑料。尽管非洲塑料污染严重,但包括肯尼亚在内的一些国家已经实施了相关法律来遏制这种污染威胁。对非洲淡水中 MPs 的研究很少。本研究提供了经验数据,并描述了维多利亚湖中四种重要商业鱼类体内的 MPs 含量。2022 年 3 月至 5 月期间,从四个采样点(近岸-离岸水域)共采集了 95 份鱼类样本。采用显微镜和衰减全反射傅立叶变换红外光谱(ATR-FTIR)方法鉴定 MPs。在这项研究中,95 条采样鱼的胃肠道中有 62 条(65.26%)含有 MPs。四个物种的采样个体中检测到的 MPs 比例各不相同:75.00%(加里鲈)、75.00%(维多利亚鲈)、71.43%(尼罗河鲈)和 59.26%(尼罗河鲈)。聚苯乙烯(PS)和聚全氟丁二烯是鱼类样本中的主要塑料聚合物。尼罗河鲈、维多利亚鲈和尼罗河鲫的条件因子均大于 1,2 的数值表明这些参数之间不存在密切关系。这些发现提供了基苏木湾鱼类受到微塑料污染的证据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
5.60
自引率
3.70%
发文量
230
审稿时长
1.7 months
期刊介绍: The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.
期刊最新文献
Levels and Classification of Microplastics and Their Impact on the Wellbeing of Selected Commercially Important Fish Species in Kisumu Bay, Lake Victoria. Correction: Exposure Assessment of Pesticides in Surface Waters of Ontario, Canada Reveals Low Probability of Exceeding Acute Regulatory Thresholds. Determination of the Suitable Biomonitors to be used in Monitoring the Change for Reducing the Concentration of V in Areas with High-Level of Air Pollution. Effect of Rice Residue Biochar on Lead Remediation, Growth, and Micronutrient Uptake in Indian Mustard (Brassica juncea (L.) Czern.) Cultivated in Contaminated Soil. Parameters Optimization for Improving Bioluminescence Inhibition Assay Using Vibrio fischeri Bacteria to Detect Lipopolysaccharide Toxicity in Aquatic Environments.
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