Affiliation:
1. Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing 210017, China
2. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
Abstract
Nanoparticles of zinc oxide (ZnO NPs) are extensively used in various applications, and their widespread use leads to their environmental presence, particularly in wastewater treatment plant effluents, rivers, and soil. This study focuses on the obscure puffer, Takifugu obscurus, an economically important fish in China, aiming to assess the toxic effects of ZnO NPs on its early life stages, emphasizing the need for understanding the ecological implications of ZnO NP exposure in aquatic environments. Exposure during the hatching stage resulted in a significant decrease in hatching rates, with embryos displaying surface coating at higher ZnO NP concentrations. Newly hatched larvae experienced deformities, and post-hatching exposure led to pronounced reductions in survival rates, particularly with higher ZnO NP concentrations. Two-month-old juveniles exposed to increasing ZnO NP concentrations exhibited a consistent decline in survival rates, emphasizing concentration-dependent adverse effects. Biochemical analyses revealed elevated malondialdehyde (MDA) levels and decreased glutathione (GSH), superoxide dismutase (SOD), and catalase (CAT) activities in various tissues, indicating oxidative stress. This study underscores the ecological risks of ZnO NP contamination in aquatic environments, emphasizing the need for careful consideration of nanoparticle exposure in aquatic ecosystems.
Funder
Jiangsu Provincial Unit Agricultural Project
National Natural Science Foundation of China
Subject
Chemical Health and Safety,Health, Toxicology and Mutagenesis,Toxicology
Reference41 articles.
1. Hussain, C.M. (2020). Handbook of Nanomaterials for Manufacturing Applications, Elsevier.
2. A review of ZnO nanoparticles as solar photocatalysts: Synthesis, mechanisms, and applications;Ong;Renew. Sustain. Energy Rev.,2018
3. Review on zinc oxide nanoparticles: Antibacterial activity and toxicity mechanism;Sirelkhatim;Nano-Micro Lett.,2015
4. Fate, behavior, and implications of ZnO nanoparticles in a simulated wastewater treatment plant;Chauque;Water SA,2016
5. Comprehensive probabilistic modelling of environmental emissions of engineered nanomaterials;Sun;Environ. Pollut.,2014