Response of the Ciliates Fabrea salina and Condylostoma sp. to Different Salinities and Microalgal Feeds

In the quest of finding local strains marine ciliates that can be easily cultured under a broad range salinity and fed with microalgae, Fabrea salina Henneguy, 1890 Condylostoma sp. Bory de St. Vincent, 1826 were for 22 days in small volumes at temperature 16–18 °C flagellated microalgae. F. presented clear preference 40 ppt Condylostoma. 20 ppt. Rhodomonas Hill Wetherbee, 1989 most efficient feeds, resulting 30 ind./mL 73 Dunaliella Teodoresco, 1905 Nephroselmis Stein, 1878 also resulted considerable ciliate densities while Isochrysis galbana Parke, 1949 came last highest density The strain Tetraselmis (var. red pappas) which is transformed immobilized palmelloid cells dinoflagellate Amphidinium carterae Hulburt, 1957, suspected toxin production, inappropriate both ciliates. These serve as useful organisms bioassays probably live food fish hatcheries.