Bioaccumulation and maternal transfer of PBDE 47 in the marine medaka (Oryzias melastigma) following dietary exposure

Jason P. van de Merwe, Alice K.Y. Chan, Elva N.Y. Lei, M.S. Yau, Michael H.W. Lam, Rudolf S.S. Wu

    Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

    50 Citations (Scopus)

    Abstract

    The bioaccumulation and maternal transfer of 2,2',4,4'-tetrabromodiphenyl ether (PBDE 47) were investigated in the marine medaka (Oryzias melastigma) following dietary exposure, in which PBDE 47 was bioencapsulated into brine shrimp (Artemia sp.) and fed daily to male-female pairs of medaka. In the accumulation experiment, each 2-month-old (pre-breeding) medaka were provided with dietary PBDE 47 at 1.3±0.2μg/day for 21days. Growth-corrected concentrations of PBDE 47 in the medaka increased over the 21days of exposure and there were no significant differences between males and females at any of the sampling times. Final concentrations were similar for males and females after 21days (230±30 and 250±30μgg-1 wet weight, respectively), accounting for 84-100% of the PBDE 47 provided in the diet. In the maternal transfer experiment, 3-month-old (breeding) medaka were provided with dietary PBDE 47 at 1.2±0.2μg/day for 18days, and reached body concentrations of 76±3 (males) and 61±6 (females)μgg-1 wet weight. Female growth-corrected PBDE 47 concentrations were significantly lower than males by day 12 (P
    Original languageEnglish
    Pages (from-to)199-204
    JournalAquatic Toxicology
    Volume103
    Issue number3-4
    DOIs
    Publication statusPublished - Jun 2011

    Research Keywords

    • Bioaccumulation
    • Flame retardants
    • Maternal transfer
    • Oryzias melastigma
    • PBDEs
    • Toxicokinetics

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