The effect of sodium dodecyl sulfate (SDS) and the household synthetic detergents (HSDs) Kristall and Tix (0.1, 1, and 10 mg/l) on cell motility, cell number dynamics, and the growth rate of the alga Plagioselmis prolonga (Cryptophyta) is studied. Algal cell motility proved to be the most sensitive indicator of detergent toxicity. SDS was the least toxic: 1 mg SDS/l caused a short-term loss of motility in 10% of the algal cells. The HSD Tix was the most toxic: only 70% of the cells recovered motility after a 24 h exposure to 1 mg/l. The substances tested in a concentration of 10 mg/l caused mortality of the P. prolonga population. According to their toxic effect on P. prolonga, the investigated toxicants can be arranged as follows: SDS < Kristall < Tix.
Russian Journal of Marine Biology – Springer Journals
Published: Mar 29, 2006
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