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Mar Pollut Bull ; 187: 114526, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36621302

RESUMO

Mercury (Hg) is a contaminant of global concern due to its damaging toxicological effects on organisms. For the vulnerable Dusky Grouper (Epinephelus marginatus) off the coast of Brazil, we investigated: i) spatial patterns in muscle tissue total mercury (THg) contamination; ii) the relationship between muscle THg concentrations and total length iii) the relationship between muscle THg and stable isotopes; and iv) THg concentrations among muscle, liver, and ovary tissues. Out of 134 fish sampled, 21.8 % were higher than 0.5 mg/kg wet weight (above the safe limit for human consumption). THg concentrations increased toward lower latitudes, but an opposite pattern was observed for δ13C and δ15N with decreased values toward lower latitudes. There were significant differences in THg concentration among the three tissues. Results of Hg concentrations are useful for understanding the potential adverse effects on the health of this vulnerable species and to serve as a guide to human consumers.


Assuntos
Bass , Mercúrio , Poluentes Químicos da Água , Animais , Humanos , Feminino , Mercúrio/análise , Brasil , Poluentes Químicos da Água/análise , Peixes , Isótopos/análise , Análise Espacial , Monitoramento Ambiental
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