Metal Concentrations in Age-Groups of the Clam, Megapitaria squalida, from a Coastal Lagoon in Mexico: A Human Health Risk Assessment

  • Carolina Delgado-Alvarez
  • Jorge Ruelas-Inzunza
  • Ofelia Escobar-Sánchez
  • Rodolfo Covantes-Rosales
  • Irving B. Pineda-Pérez
  • C. Cristina Osuna-Martínez
  • Marisela Aguilar-Júarez
  • J. Isidro Osuna-López
  • Domenico Voltolina
  • Martín G. Frías-EspericuetaEmail author


The present study shows the human health risk of Cd, Cu, Hg and Zn by consumption of clams Megapitaria squalida from Northwest Mexico, collected in 2013. The mean concentration for each metal in the soft tissue was: Zn > Cu > Cd > Hg; and mean values of 68.89 ± 37.59—30.36 ± 27.19, 8.77 ± 1.35—6.80 ± 0.36, 4.47 ± 0.21—3.18 ± 0.63 and 0.99 ± 0.81—0.52 ± 0.16 µg/g, respectively. Clam age was significantly negatively correlated (p < 0.05) with soft tissue Zn concentrations. For all metals there is a low level of human health risk associated with the consumption of M. squalida, but it is necessary to determine the specific characteristics of the human population of the study site.


Metals Clams Age Risk assessment 



Supported by projects Programa de Fomento y Apoyo a Proyectos de Investigación UAS 2012/059; Programa para el Desarrollo del Personal Docente CANE (year 3) and Consejo Nacional de Ciencia y Tecnología INFRA 2012-01-188029. To Y. Leyva-Vázquez for age analysis. OES thanks CONACYT for the Project Cátedras CONACYT (N° 2137).

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Carolina Delgado-Alvarez
    • 1
  • Jorge Ruelas-Inzunza
    • 2
  • Ofelia Escobar-Sánchez
    • 3
  • Rodolfo Covantes-Rosales
    • 4
  • Irving B. Pineda-Pérez
    • 4
  • C. Cristina Osuna-Martínez
    • 4
  • Marisela Aguilar-Júarez
    • 4
  • J. Isidro Osuna-López
    • 4
  • Domenico Voltolina
    • 5
  • Martín G. Frías-Espericueta
    • 4
    Email author
  1. 1.Universidad Politécnica de SinaloaMazatlánMexico
  2. 2.ITMAZ MazatlánMazatlánMexico
  3. 3.Consejo Nacional de Ciencia y Tecnología (CONACYT), Dirección de Cátedras CONACYTMexico CityMexico
  4. 4.Facultad de Ciencias del MarUniversidad Autónoma de SinaloaMazatlánMexico
  5. 5.CIBNORMazatlánMexico

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