Heavy-metal contents in oysters (Crassostrea gigas) cultivated on the southeastern coast of the Gulf of California, Mexico

  • Andrés Martín Góngora-Gómez Instituto Politécnico Nacional (IPN),Departamento de Acuacultura, Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional (CIIDIR), Unidad Sinaloa. Blvd. Juan de Dios Bátiz Paredes # 250, Guasave, Sinaloa, 81101, México
  • Manuel García-Ulloa Instituto Politécnico Nacional (IPN),Departamento de Acuacultura, Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional (CIIDIR), Unidad Sinaloa. Blvd. Juan de Dios Bátiz Paredes # 250, Guasave, Sinaloa, 81101, México
  • Norma Patricia Muñoz Sevilla IPN. Laboratoriode Análisis y Monitoreo Ambiental, Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Calle 30 de Junio 1520 s/n, Barrio La Laguna Ticomán, CDMX , 07340. México
  • Ana Laura Domínguez-Orozco IPN. Departamento de Medio Ambiente,CIIDIR, Unidad Sinaloa.
  • Brenda Paulina Villanueva-Fonseca Instituto Politécnico Nacional (IPN),Departamento de Acuacultura, Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional (CIIDIR), Unidad Sinaloa. Blvd. Juan de Dios Bátiz Paredes # 250, Guasave, Sinaloa, 81101, México
  • Juan Antonio Hernández-Sepúlveda IPN. Departamento de Medio Ambiente,CIIDIR, Unidad Sinaloa.
  • Rogelio Ortega Izaguirre IPN. Departamento de Ingeniería de Desarrollo Sustentable, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada (CICATA-Tamaulipas), Altamira, Tamaulipas, 89600, México
Palabras clave: Aquaculture, bioaccumulation, Japanese oyster, metal toxicity, pollution.

Resumen

Background. For its flesh and flavor, the Pacific oyster Crassostrea gigas is cultivated worldwide, but as filter feeders, this bivalve bioaccumulates heavy metals from different pollution sources, rendering them unsafe for human consumption. Goals. We carried out this study to assess the heavy metal concentrations in cultivated oysters from a farm located on the southeastern coast of the Gulf of California during 2011. Methods. Oyster samples were analyzed monthly (March- December 2011) for cooper (Cu), cadmium (Cd), chromium (Cr), nickel (Ni), lead (Pb), zinc (Zn), arsenic (As), and mercury (Hg). Results. The mean values (?g g-1, dry weight) for each metal were Cu = 51.42 ± 25.92, Cr = 24.97 ± 32.38, Cd = 13.84 ± 4.22, Ni = 10.26 ± 12.18, Pb = 2.18 ± 1.28, As = 0.37 ± 0.08, Zn = 267.42 ± 92.29, and Hg = 0.02 ± 0.01.
Conclusions. The results suggest that metal burdens could be influenced by anthropogenic activities such as agriculture and aquaculture surrounding the culture zone. Cu, Cr, Cd, and Pb levels (?g g-1, fresh weight) were above the maximum permissible values and thus pose a threat to human health. Metal concentrations must be monitored periodically.

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Publicado
18-09-2017
Cómo citar
Góngora-Gómez, A. M., García-Ulloa, M., Muñoz Sevilla, N. P., Domínguez-Orozco, A. L., Villanueva-Fonseca, B. P., Hernández-Sepúlveda, J. A., & Ortega Izaguirre, R. (2017). Heavy-metal contents in oysters (Crassostrea gigas) cultivated on the southeastern coast of the Gulf of California, Mexico. HIDROBIOLÓGICA, 27(2), 219-227. https://doi.org/10.24275/uam/izt/dcbs/hidro/2017v27n2/Garcia
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