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Mercury (Hg) and selenium (Se) content in the shark Mustelus henlei (Triakidae) in the northern Mexican Pacific

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Abstract

Mercury and selenium were assessed in Mustelus henlei, which is a carnivorous predatory shark that is important for the coastal communities of the northern Mexican Pacific (NMP). Sixty-two individuals were sampled; muscle and liver were isolated and analyzed by atomic absorption spectrophotometry. The mean Hg concentrations (wet weight) obtained for muscle (0.08 ± 0.10 μg g−1) and liver (0.09 ± 0.26 μg g−1) were below the allowed limits (< 1.0 μg g−1 Hg). The average Se concentration was 0.03 ± 0.01 μg g−1 in muscle and 0.13 ± 0.05 μg g−1 in liver. The Se/Hg molar ratio of muscle was 1.83; however, the selenium health benefit value (HBVSe) was of 0.08. We calculated that an adult man (70 kg), an adult woman (60 kg), and a child (16 kg) could consume 1595, 838, and 223 g/week of M. henlei muscle, respectively, without risks to health. In conclusion, the concentrations and molar ratio of Hg and Se in M. henlei muscle mean that consumption of this shark’s meat does not represent neither a benefit nor a public health risk.

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Acknowledgments

The authors are grateful to all who collaborated in the laboratory, to Humberto Bojórquez and Karla Guadalupe Sánchez-Osuna. Brenda Medina Bañuelos and Gustavo Andrade Domínguez participated in the biological sampling in the CRIAP.

Funding

This work was supported by CONACYT through the project Ciencia Básica (no. 255687) and Problemas Nacionales (no. 248708). OES thanks CONACYT for the project Cátedras CONACYT (no. 2137) and for financial support through SNI.

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Authors and Affiliations

  1. Facultad de Ciencias del Mar (FACIMAR), Universidad Autónoma de Sinaloa (UAS), Paseo Claussen S/N. Col. Los Pinos, 82000, Mazatlán, Sinaloa, Mexico

    Sergio Alonzo Medina-Morales, Ofelia Escobar-Sánchez & Martin Gabriel Frías-Espericueta

  2. Centro Regional de Investigaciones Acuícolas y Pesqueras de Mazatlán, INAPESCA, Calzada Sábalo-Cerritos S/N, Contiguo al Estero El Yugo, 82112, Mazatlán, Sinaloa, Mexico

    David Corro-Espinosa

  3. Dirección de Cátedras CONACYT, CONACYT, Av. Insurgentes Sur 1582, Col Crédito Constructor, Del. Benito Juárez, 03940, Mexico City, Mexico

    Ofelia Escobar-Sánchez

  4. Universidad Politécnica de Sinaloa, Mazatlán, Carretera Mazatlán-Higueras km 3, Col. Genaro Estrada, 82199, Mazatlán, Sinaloa, Mexico

    Carolina Guadalupe Delgado-Alvarez

  5. Sección Ambiental, Instituto Tecnológico de Mazatlán, Corsario 1, No. 203, Col. Urías, 82070, Mazatlán, Sinaloa, Mexico

    Jorge Ruelas-Inzunza

  6. Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera Gustavo Astiazarán Rosas 46, Colonia La Victoria, 83304, Hermosillo, Sonora, Mexico

    Martin Enrique Jara-Marini

  7. Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, P.O. Box 811, 82040, Mazatlán, Sinaloa, Mexico

    Federico Páez-Osuna

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  1. Sergio Alonzo Medina-Morales
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  2. David Corro-Espinosa
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  3. Ofelia Escobar-Sánchez
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  4. Carolina Guadalupe Delgado-Alvarez
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  7. Martin Enrique Jara-Marini
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  8. Federico Páez-Osuna
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Correspondence to Ofelia Escobar-Sánchez.

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Medina-Morales, S.A., Corro-Espinosa, D., Escobar-Sánchez, O. et al. Mercury (Hg) and selenium (Se) content in the shark Mustelus henlei (Triakidae) in the northern Mexican Pacific. Environ Sci Pollut Res 27, 16774–16783 (2020). https://doi.org/10.1007/s11356-020-08198-1

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