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Mercury and selenium concentrations in the crab Callinectes arcuatus from three coastal lagoons of NW Mexico

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Abstract

Mercury and selenium concentrations and Se:Hg molar ratio in edible muscle and hepatopancreas of the crab Callinectes arcuatus from coastal lagoons of northwest Mexico were determined using atomic absorption spectrophotometry. The three coastal lagoons were Santa María La Reforma (SMLR), Urías (UR), and Huizache-Caimanero (HC); samplings were carried out from December 2016 to October 2017. The mercury ranges in the muscle of C. arcuatus in SMLR, UR, and HC lagoons were 0.31–0.52, 0.15–0.45, and 0.22–0.55 μg g−1, respectively. In hepatopancreas, the values ranged from 0.08 to 0.15, 0.06 to 0.15, and 0.05 to 0.12 μg g−1 in SMLR, UR, and HC lagoons, in that order. For selenium concentrations in C. arcuatus muscle, the ranges 11.64–20.14, 14.88–19.71, and 15.27–29.51 μg g−1 were determined in SMLR, UR, and HC lagoons, respectively. While for hepatopancreas, the ranges were 34.34–44.13, 27.77–40.45, and 15.16–49.80 μg g−1, in that order. No significant relationships (p > 0.05) between mercury and selenium concentrations (in white meat and hepatopancreas) were observed in C. arcuatus carapace width and length. Se:Hg molar ratio values were 98.1 ± 20.8, 171.4 ± 81.6, and 176.8 ± 51.2 for SMLR, UR, and HC lagoons, in that order. This high ratio (> 1) in C. arcuatus edible muscle indicated that selenium concentration was sufficient to neutralize possible mercury toxicity, so it does not represent danger to humans when it is consumed.

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Acknowledgments

The authors thank Domenico Voltolina, Karla Sánchez, and Humberto Bojórquez-Leyva for the technical support and D. Fischer for the editorial services.

Funding

This study was supported by the projects Programa de Fomento y Apoyo a Proyectos de Investigación UAS 2015/103, Programa para el Desarrollo Profesional Docente CANE (year 3), and Consejo Nacional de Ciencia y Tecnología INFRA 2012-01-188029.

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All authors contributed to the study conception and design. Material preparation, data collection, and analyses were performed by Pedro Octavio Ocampo-Rodríguez, Karen Lizbeth Soto-Romero, Nancy Lorena Garzón-Raygoza Marisela Aguilar-Júarez, José Isidro Osuna-López, and Martín Frías-Espericueta. The first draft of the manuscript was written by Carolina Guadalupe Delgado-Alvarez, Jorge Ruelas-Inzunza, Carmen Cristina Osuna-Martínez, Magdalena Elizabeth Bergés-Tiznado, Ofelia Escobar-Sánchez, and Martín Frías-Espericueta; all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Martín Frías-Espericueta.

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Responsible Editor: Vedula VSS Sarma

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Delgado-Alvarez, C.G., Ruelas-Inzunza, J., Osuna-Martínez, C.C. et al. Mercury and selenium concentrations in the crab Callinectes arcuatus from three coastal lagoons of NW Mexico. Environ Sci Pollut Res 28, 10909–10917 (2021). https://doi.org/10.1007/s11356-020-11396-6

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  • DOI: https://doi.org/10.1007/s11356-020-11396-6

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