PARENTERAL DIET OF HIGHER CRAYFISH
The opportunity for biosorbption of substances found in dissolved food by fresh-water amphipoda<i> Gammarus balcanicus</i> has been investigated. Experiments with methionine - sulfur-35, calcium and phosphorus found in a water radioactive solution have been carried out. Autoradiographs have shown their accumulation in various tissues of animals. The same experiments have been carried out with a mixture of a number nonradioactive amino acids. It is established that only for 10 months animals can process 60 mg of protein on 1 gram, all necessary calcium and phosphorus.