Preferential Liver Accumulation of Mercury Explains Low Concentrations in Muscle of Caiman yacare (Alligatoridae) in Upper Amazon

Andrea C. Salazar-Pammo, Dario Achá, Guido Miranda-Chumacero

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

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Resumen

Caiman yacare is considered one of the top predators in the Amazon basin, and understanding pollutant distribution within its tissues may help its sustainable management. As a top predator, C. yacare should have the highest mercury concentrations, but has lower Hg concentrations than carnivorous fish (Rivera et al. 2016), which are part of their diet. We compared total Hg among liver, kidney, fat, and muscle of C. yacare, and whether trends in the distribution of Hg among tissues were like other crocodilians, aquatic birds, omnivorous, and carnivorous fish. Fat had the lowest concentrations (0.025 ± 0.03 mg kg−1) followed by muscle (0.15 ± 0.06 mg kg−1), kidney (0.57 ± 0.30 mg kg−1) and liver (1.81 ± 0.80 mg kg−1). Such preferential accumulation makes C. yacare meat a safer alternative for human consumption than carnivorous fish. The relation between Hg accumulation in liver and muscle is highest in crocodilians, which has evolutive and environmental implications.

Idioma originalInglés
Páginas (desde-hasta)264-269
Número de páginas6
PublicaciónBulletin of Environmental Contamination and Toxicology
Volumen106
N.º2
DOI
EstadoPublicada - feb. 2021

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© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC part of Springer Nature.

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