Effect of Desalinated Deep on Organotin-poisoned Euglena gracilisSeawater JSBA

use has contributed to contamination of the marine environment.7) However, no effective method for decreasing the toxic lcvel of these agents has been found. The freshwater phytoplankton, Euglena gracilis Z strain, was used as the model organism for TBTCI poisoning, as biota are thought to be affected by TBTCI pollution of the ecosystem and as this unicellular organism is highly sensitive to this pollutant.S) When E. gracitis is exposed to TBTCI, it loses its maneuverability, and its shape changes from a motile spindle to a spherical cystic form via a teardrop form (Fig. 1). We haye reported earlier that Euglena cells poisoned by TBTCI were detoxified by seyeral solutions, including mineral-encaging zeolites, and showed that minerals (zinc, manganese and iron) that are thought to take part in cell functions as nutrients