The Use of 14C in the Study of Nutrition of Aquatic Animals

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Abstract
Summary Radiocarbon method of study of nutrition of aquatic animals is decribed basing upon the estimation of amount of consumed and utilized food labelled with 14C. Calculations are made using the values of the specific radioactivity of food and radioactivity of the bodies of consumers. Sensitivity of the method is about 10−5mg C/ind. The paper contains description of the technique of food labelling (algae, bacteria, animals, detritus) and estimation of its specific radioactivity. There is given a list of values of intensity and efficiency of the nutrition of aquatic animals which can be obtained by means of radiocarbon method. The ways of arrangement of corresponding experiments are described. Several results of the application of radiocarbon method for the estimation of balance of consumption, composition of nutrition and its dependence upon concentration of food are shown as an example of its practical use.

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