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 journalArticle

    35 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 - 2016

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