Surfactant-based oil dispersant toxicity to developing nauplii of Artemia: Effects on ATPase enzymatic system

TitleSurfactant-based oil dispersant toxicity to developing nauplii of Artemia: Effects on ATPase enzymatic system
Publication TypeJournal Article
Year of Publication2001
AuthorsCotou, E, Castritsi-Catharios I, Moraitou-Apostolopoulou M
JournalChemosphere
Volume42
Issue8
Pages959 - 964
KeywordsArtemia, ATPase, Oil dispersant, Toxicity testing
Abstract

The paper deals with the toxicity of a surfactant-based oil dispersant to the ATPase activities of two naupliar stages of Artemia (instar I & II). Both instars were exposed to sub-lethal and lethal concentrations derived from acute toxicity data. The chosen concentrations were near to LOECs and NOECs. An eightfold difference indicated between the instars was instar-exposure time dependent. The most prominent effects were the inhibition and the stimulation of Na+/K+-ATPase and Mg2+-ATPase activities, respectively. The cause of these effects was related to the dispersant components, the surfactants. The pattern stimulation/inhibition of Mg2+-ATPase and Na+/K+-ATPase activities could be used to indicate toxic stress by surfactant-based oil dispersants since previous studies with other contaminants have shown different ATPase activity patterns. © 2001 Elsevier Science Ltd.

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