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- W2017243589 abstract "Abstract Under laboratory conditions, mussels, winkles and prawns have exhibited the ability to accumulate 237Np, 239Pu and 241Am from both sea water and food. In general, the soft tissues involved in feeding and digestion accumulated radionuclides most effectively. In digestive glands/hepatopancreas, the site of nuclide uptake was the digestive tubules. Other active tissues were the gill and heart of the Dublin Bay prawn and the pallial complex and operculum of the winkle. The prawn's gill was the only tissue to exhibit a clear preference between food and sea water labelling media — higher accumulation occurring via sea water. Heart tissue contained enhanced levels of 239Pu relative to 237Np and 241Am. This unusual observation may be associated with metaldetoxification processes. The various glandular and secretory functions of the winkle's pallial complex may account for the comparable magnitude of nuclide activities in this tissue and the digestive gland. Other mucous secretions, on the external layers of the winkle's head and foot, have been observed to accumulate radio-nuclides but not as efficiently as the pallial complex. The most intense α-track distributions encountered were found in the winkle's operculum, these bein attributable to its chitinous nature. The laboratory experiments have shown here that the accumulation and distribution of transuranic nuclides in marine invertebrates are highly influenced by the presence of scleroproteins, chitinous material and mucous secretions. Despite the relatively low activities present in Ravenglass mussels and winkles, their α-autoradiographs exhibited tissue activity trends in general accordance with those obtained experimentally. This finding provides some futher support for the validity of laboratory-derived information and its extrapolation to environmental conditions." @default.
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- W2017243589 date "1993-01-01" @default.
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- W2017243589 title "Distribution of radionuclides in mussels, winkles and prawns. Part 2. Study of organisms under laboratory conditions using alpha-autoradiography" @default.
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- W2017243589 doi "https://doi.org/10.1016/0265-931x(93)90028-6" @default.
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