Optimization of MN test and CA as genotoxic biomarkers in Trachemys callirostris.
Baseline levels of DNA damage in Trachemys callirostris were established.
Genotoxic effects were found in two natural environments of Trachemys callirostris.
T. callirostris proved to be a promising model for in situ genotoxic monitoring.
This data are a reference for future biomonitoring in other regions inhabited by this species.