In model experiments on the crayfish Daphnia magna Straus, the importance of peculiar disturbing cellular effects of low radiation was studied. We showed that even at a dose of 0.1 Gy, which is a thousand times lower than predicted as lethal (100 Gy), the probability of the animals' death increases. The process was registered for the greater part of Daphnia's lifetime. The frequency of death of irradiated animals did not increase with doses increasing from 1 to 20 Gy. Because cellular dose-independent effects were found on the subjects of various species (including rats), we decided that these effects may affect the viability of mammals even at low doses of radiation.
Keywords: ionising radiation, low doses, dose-independent effects, lethality, invertebrate aquatic organisms, radioecology safety, environmental risk, low radiation, crayfish, Daphnia magna, mammals, mortality prediction