Changes in Biological Characteristics of Freshwater Heterotrophic Flagellates and Cladocerans under the Effect of Metal Oxide Nano- and Microparticles

摘要

Data on the effect of nano- and microparticles of cerium and titanium dioxides and zinc oxide on the survival rate and reproduction of nanoflagellates and ceriodaphnia are given. The inhibitory effect of metal oxide nanoparticles on nanoflagellates Bodo saltans Ehrenberg manifested itself in a decrease in their population after 3-4 days of exposure. This effect was found to increase with agent concentrations. In the case of Ceriodaphnia affinis Lilljeborg, their reproductive characteristics showed a significant correlation with the concentrations of nanosize particles of the substances under consideration. Unlike zinc oxide, the microrparticles of titanium and cerium dioxides were less toxic than the respective nanoparticles.