Ingestion and egestion of polyethylene microplastics by goldfish (Carassius auratus): influence of color and morphological features

Xiong Xiong, Yenan Tu, Xianchuan Chen, Xiaoming Jiang, Huahong Shi, Chenxi Wu, James J. Elser

    Research output: Contribution to journalArticle

    Abstract

    It is vital to understand processes of microplastic ingestion and egestion by aquatic organisms in order to evaluate the potential effects and impacts of microplastics in aquatic ecosystems. In this study, goldfish (Carassius auratus) was used to investigate ingestion and egestion of polyethylene (PE) microplastics and how these processes were affected by size, color, and shape of microplastics. Results showed that goldfish ingested white PE microplastics only in the presence of fish feed and that microplastics larger than 2 mm were rejected even after being ingested. However, in the presence of food, more green and black microplastics were ingested compared with red, blue, and white microplastics while significantly higher amounts of microplastic films were ingested compared with fragments and filaments. Microplastics ingested by goldfish were egested within 72 h. However, the egestion rate of filaments was the lowest among all tested microplastic shapes. The presence of food appeared to reduce film and filament residues in fish after 72 h. Results of this study imply that different features of microplastics result in different exposure risks for fish. Thus, the specific features of microplastics (e.g. their shape, color, and size) should be considered in future ecotoxicological studies.

    Original languageEnglish (US)
    Article numbere03063
    JournalHeliyon
    Volume5
    Issue number12
    DOIs
    StatePublished - Dec 2019

    Fingerprint

    Carassius auratus
    goldfish
    polyethylene
    plastics
    ingestion
    color
    films (materials)
    aquatic organisms
    fish
    fish feeds

    Keywords

    • Egestion
    • Environmental chemistry
    • Environmental features
    • Environmental hazard
    • Environmental pollution
    • Environmental risk assessment
    • Environmental toxicology
    • Fish
    • Ingestion
    • Microplastics

    ASJC Scopus subject areas

    • General

    Cite this

    Ingestion and egestion of polyethylene microplastics by goldfish (Carassius auratus) : influence of color and morphological features. / Xiong, Xiong; Tu, Yenan; Chen, Xianchuan; Jiang, Xiaoming; Shi, Huahong; Wu, Chenxi; Elser, James J.

    In: Heliyon, Vol. 5, No. 12, e03063, 12.2019.

    Research output: Contribution to journalArticle

    Xiong, Xiong ; Tu, Yenan ; Chen, Xianchuan ; Jiang, Xiaoming ; Shi, Huahong ; Wu, Chenxi ; Elser, James J. / Ingestion and egestion of polyethylene microplastics by goldfish (Carassius auratus) : influence of color and morphological features. In: Heliyon. 2019 ; Vol. 5, No. 12.
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