p. 213 - 218 CARACTERISTIQUES BIOCHIMIQUES DE L'ECREVISSE ASTACUS LEPTODACTYLUS (FAM. ASTACIDAE) Cezarina Dincu, M. Crasmaru Institut Roumain de Recherches Marines Constanta Abstract The paper presents the variation of the biochemical components (proteins, lipids, glucides) and mineral substance concentration in the hepato-pancreas and muscles of Astacus leptodactylus by various ages and sexes. There are some quatitative differences in the biochemical structure depending on organ, sex and age. It has been ascertained that the male adults are the richest in nutritive substances.