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The Effects of Food on the Uptake and Excretion of Nano-Plastics by Daphnia magna

Author

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  • Xiao-Jing Liu

    (Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China)

  • Yu-Hang Zhang

    (Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China)

  • Rong-Yao Gao

    (Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China)

  • Hua-Bing Jia

    (Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China)

  • Qian-Qian Shao

    (Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China)

  • Ya-Wen Hu

    (Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China)

  • Li-Min Fu

    (Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China)

  • Jian-Ping Zhang

    (Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China)

Abstract

The effects of nano-plastics (NPs) on aquatic organisms have drawn significant attention. Understanding the uptake and excretion of NPs by aquatic organisms can provide clearer insights into their behavior within organisms. And the effect of different food on the processes is unclear. Daphnia magna ( D. magna ) is considered as a model organism for assessing the ecological risks of NPs. This work observed the uptake and excretion of NPs by D. magna under different food supply conditions. The effects of three different types of foods ( Chlorella sp., Euglena gracilis , and yeast powder) on the uptake and excretion of two concentrations of NPs (1 mg/L and 3 mg/L) by the D. magna were compared. A Time-Gated Imaging technique was used to quantify the NPs uptake mass by D. magna . The study results showed the inhibitory effect presented by food on the uptake of NPs by D. magna . The inhibitory ability of different foods varies, with similar levels observed in Chlorella sp. and E. gracilis , while the inhibitory effect of yeast powder was slightly weaker. The facilitating effect was presented by food on the excretion of NPs. The time constant of excretion of NPs by feeding yeast powder was about 4–5 min longer than that of two types of algae. These effects can be attributed to food occupying the intestine tract of D. magna and supplying energy. This work emphasizes the important role of food in evaluating the ecological effects of NPs and provides support for future research on the long-term risks of pollutants to aquatic organisms and environmental sustainability.

Suggested Citation

  • Xiao-Jing Liu & Yu-Hang Zhang & Rong-Yao Gao & Hua-Bing Jia & Qian-Qian Shao & Ya-Wen Hu & Li-Min Fu & Jian-Ping Zhang, 2024. "The Effects of Food on the Uptake and Excretion of Nano-Plastics by Daphnia magna," Sustainability, MDPI, vol. 16(10), pages 1-14, May.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:10:p:3941-:d:1390530
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    References listed on IDEAS

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    1. Feng Wang & Yu Han & Chin Seong Lim & Yunhao Lu & Juan Wang & Jun Xu & Hongyu Chen & Chun Zhang & Minghui Hong & Xiaogang Liu, 2010. "Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping," Nature, Nature, vol. 463(7284), pages 1061-1065, February.
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