Preferential manganese accumulation in dreissenid byssal threads |
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| Authors: | Charles P Swann Tinuola Adewole JHerbert Waite |
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| Institution: | aBartol Institute, University of Delaware, Newark, DE 19716, USA;bMarine Biology/Biochemistry Program, Brown Laboratory, Graduate College of Marine Studies, University of Delaware, Newark, DE 19726–2522, USA |
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| Abstract: | The elemental composition of byssal threads from two freshwater mussels Dreissena polymorpha (zebra) and Dreissena bugensis (quagga) has been determined by proton-induced X-ray emission spectroscopy. Sulphur and manganese are present at 30–100-fold higher concentrations in the threads than in ambient waters of Lake Erie. Calcium, phosphorus and copper levels are also somewhat enhanced in byssus. Since dreissenid byssus is not mineralized, Mn may be organometallically complexed to the functional side chains of byssal proteins. |
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| Keywords: | Zebra mussel Quagga mussel Dreissenidae Manganese Proton induced X-ray emission Metal accumulation Byssal threads Lake Erie |
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