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

Authors :
George N. Hotos
Ioanna Touloupi
Source :
Ecologies; Volume 3; Issue 2; Pages: 225-234
Publication Year :
2022
Publisher :
Multidisciplinary Digital Publishing Institute, 2022.

Abstract

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

Details

Language :
English
ISSN :
26734133
Database :
OpenAIRE
Journal :
Ecologies; Volume 3; Issue 2; Pages: 225-234
Accession number :
edsair.doi.dedup.....d68d29f5fd073cd21a2a5c09aa8b14d7
Full Text :
https://doi.org/10.3390/ecologies3020017