Occurrence of microcystins in water, bloom, sediment and fish from a public water supply

Fatma Gurbuz, Oguz Uzunmehmetoglu, Öznur Diler, James Metcalf, Geoff Codd

    Research output: Contribution to journalArticlepeer-review

    45 Citations (Scopus)

    Abstract

    Microcystin (MC) accumulation was determined in the liver and muscle of two omnivorous fish species which are consumed and are economically important, and in a planktivorous-carnivorous fish from Lake Eğirdir, Turkey. Free extractable MCs in fish tissue samples were detected by enzyme-linked immunosorbent assay (ELISA) with confirmation by high performance liquid chromatography with photodiode array detection (HPLC-PDA). MC-LA and -YR, were detected in both liver and muscle, followed by MCs -LY, -LF, -RR and -LR respectively. The MC concentrations varied between 0.043 and 1.72 μg/g dry weight in liver and muscle tissues. MCs were also determined in samples of water, sediment and a bloom sample of Microcystis aeruginosa from the lake by HPLC-PDA. MC-LY and -YR were most commonly identified in water samples, with total MC concentrations ranging from 2.9 ± 0.05 to 13.5 ± 2.3 μg/L. Sediment analyses, showed that MC-YR was present in samples between 7.0 and 17.6 μg/g dw, especially in October, November and December when no MC-YR was recorded in water, followed by MC-LW. The findings indicate that water and sediment contained MCs, and more importantly that fish were contaminated with MCs that may pose an MC-associated human health risk.

    Original languageEnglish
    Pages (from-to)860-868
    Number of pages9
    JournalScience of The Total Environment
    Volume562
    DOIs
    Publication statusPublished - 15 Aug 2016

    Keywords

    • ELISA
    • Fish tissue
    • HPLC analysis
    • Microcystins
    • Sediment
    • Water

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