p. 217 - 222 ACTIVITY OF ALPHA- AMYLASE IN SOME SPECIES OF MOLLUSCS AND FISH Natalia Rosoiu 1)Mihai Serban 2) 1) Romanian Marine Research Institute Constanta 2) Faculty of Veterinary Medicine Bucharest Abstract The work is presenting some new data concerning the activity of -amylase in 3 species of molluscs (Rapana thomasiana, Mytilus galloprovincialis and Mya arenaria)and 3 species of fish (Squalatus acanthias, Spratus sprattus sprattus and Engraulis encrasicholus ponticus)in the Romanian coastal waters of the Black Sea, in a cephalopod (Illex illecebrosus) and 5 species of fish (Etrumeus sardina, Trachurus trachurus trachurus, Scomber japonicus colias, Merluccius sp.and Balistes capriscus captured in different areas of the World Ocean.