What are the long-term genetic consequences of chronic low-dose radiation exposure? This study examines population mutagenesis and genetic radioadaptation in small mammals (bank voles) exposed to chronic low-intensity irradiation from the Chernobyl accident. By studying how the mice pass down the mutations, scientists may learn how to make our environment safer. The research reveals oppositely directed processes in irradiated populations: mutation accumulation, and genetic radioadaptation. It suggests that mutation frequencies could be higher without radioadaptation. The study also demonstrates a relationship between cytogenetic injuries and low radiation doses in animal generations. The nonlinear dose-effect curves indicate complicated microevolutionary processes. The findings suggest the absence of a genetic effect threshold for low-dose radiation. Linear equations cannot accurately capture the dependence of cytogenetic effects on low radiation doses in irradiated generations. This information is valuable for researchers and policymakers assessing the long-term risks associated with radiation exposure, which can then be used to inform future safety regulations.
Environmental Management and Health provides a valuable platform for this research, aligning with the journal's emphasis on environmental risks and their impact on living organisms. By exploring the genetic effects of chronic irradiation, the study informs environmental risk assessments and management strategies. It contributes to the ongoing research about the impact of the accident.