Search

This study analyzed the concentrations of 15 (Al, As, Ba, Cd, Cr, Cu, Fe, Hg, Mn, Mo, Ni, Pb, Se, V, Zn) toxicologically important trace elements in the livers of 110 green turtles stranded in two areas of the Brazilian coast. These areas are essential for the refuge, feeding, and reproduction of the species, and the information obtained is intended to support the development of conservation strategies. Higher concentrations were observed in the Região dos Lagos, RJ in almost all elements, except for Al, Mo, Pb, and V. This location showed statistically higher differences in the concentrations of Cd (4.66 ± 2.33 μg.g−1), Fe (846.62 ± 583.06 μg.g−1), and Zn (27.17 ± 10.90 μg.g−1). The differences in trace element concentration patterns between the two study areas are likely influenced by multiple factors, including the bioavailability of trace elements, oceanic upwelling events, anthropogenic activities, habitat characteristics, and organism-specific metabolic processes. • Trace elements are mainly controlled by upwelling in the Brazilian coast. • As, Ba, Cd, Cu, Fe, Hg, Mn, Ni, Se and Zn had highest levels in the upwelling area. • Al, Cr, Mo, Pb had highest levels in area impacted by mine tailings. • Al, As, Cd, Cu, Fe and Zn showed highest levels in both study areas. • Ba, Cr, Ni and Pb were not detected (45 % of liver samples. [ABSTRACT FROM AUTHOR]