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Microplastic Toxicity in Aquatic Organisms and Aquatic Ecosystems: a Review

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Abstract

Microplastics are pervasive pollutants and have been found in all environmental compartments globally, including aquatic ecosystems. Ingestion and trophic transfer of microplastics through aquatic species have been widely reported. Although a plethora of studies have reported that microplastics can be transferred through higher trophic level food webs with the potential for accumulation and toxicity, most microplastic aquatic toxicity studies have been conducted in laboratory studies. This means that studies within entire ecosystems or at environmentally relevant concentrations are lacking, representing a critical knowledge gap for ecotoxicological impact of microplastics on aquatic species and higher trophic level consumers (including humans). Thus, an understanding of aquatic ecosystem toxicity is still relatively unknown. To address this knowledge gap, this study provides a non-exhaustive summary of microplastic transport pathways, ecotoxicology, food web transfer, and examples of toxic pollutants sorbed onto microplastics in aquatic food webs. This study will guide future research priorities to address microplastic toxicity through aquatic food webs.

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Acknowledgements

This work was supported by the Department of Fisheries and Marine Science, Faculty of Science, Noakhali Science and Technology University, Noakhali, Bangladesh. The authors are grateful to Akib Mahmud Khan, Department of Oncological Science, University of Utah, Salt Lake City, Utah 84418, USA for giving access to software to create Fig. 3. Special thanks to Dr. Dominique Dotson for proofreading the manuscript.

Funding

The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through Group Research Project under grant number (R.G.P.2/146/43).

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Correspondence to Tony R. Walker.

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Rakib, M.R.J., Sarker, A., Ram, K. et al. Microplastic Toxicity in Aquatic Organisms and Aquatic Ecosystems: a Review. Water Air Soil Pollut 234, 52 (2023). https://doi.org/10.1007/s11270-023-06062-9

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  • DOI: https://doi.org/10.1007/s11270-023-06062-9

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