Distribution of selenium in marine animals: relationship to diet

The chemical form of selenium in the muscle tissues of marine animals in relation to diet has been examined. Inorganic selenium concentrations in all muscle tissues were below the detection limits of the analytical method employed (0.001 mg/kg). Selenium was found to be associated in all tissues predominantly with insoluble proteins. Lipid-soluble and ethanol-soluble selenium constituted less than 18% of the selenium present in tissues and was independent of diet.