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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2020
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| Online Access: | https://www.redalyc.org/articulo.oa?id=37072379013 https://www.redalyc.org/journal/370/37072379013/ https://www.redalyc.org/journal/370/37072379013/html/ https://www.redalyc.org/journal/370/37072379013/37072379013.epub https://www.redalyc.org/journal/370/37072379013/movil |
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Table of Contents:
- TRACE METALS IN TWO WILD POPULATIONS OF THE SQUALID CALLISTA CLAM ( Megapitaria squalida) IN THE SOUTHEASTERN GULF OF CALIFORNIA, MEXICO Carlos Humberto Sepúlveda Andrés Martín Góngora-Gómez Sandra Pérez-Álvarez Hervey Rodríguez-González Norma Patricia Muñoz-Sevilla Brenda Paulina Villanueva-Fonseca Juan Antonio Hernández-Sepúlveda Manuel García-Ulloa Gómez Ciencias de la Tierra Sinaloa sediments Toxicology chocolata clam metals bioaccumulation The squalid callista clam (Megapitaria squalida) is a popular raw seafood item for human consumption; however, as a filter feeder, this clam accumulates heavy metals from natural and anthropogenic sources. The concentrations of copper (Cu), cadmium (Cd), chromium (Cr), nickel (Ni), lead (Pb), zinc (Zn), arsenic (As), and mercury (Hg) in sediments and the soft tissues of M. squalida from two sites on the southeastern coast of the Gulf of California, Mexico, were evaluated from April 2016 to April 2017 on a monthly basis. The metal concentrations in sediments from both sites did not exceed the Mexican and international regulations. Concentrations of Cd and Pb in the clams from Altata bay (2.49 and 5.68 μg/g dw, respectively) and Agiabampo bay (2.38 and 5.54 μg/g dw, respectively) exceeded the permissible limits recommended by Mexican sanitary regulations, thus representing a threat to human health. The higher values of Cd, As, and Hg obtained for the biota sediment accumulation factor in both sampling areas indicate that squalid callista is a strong accumulator of these metals. The metal burdens in sediments and M. squalida soft tissues are influenced by chemicals from agriculture and aquaculture, as well as urban sewage disposal near both sites. This study brings useful information on metal bioaccumulation in one of the most important commercial clam species on the Pacific coast. 2020 artículo científico 0188-4999 https://www.redalyc.org/articulo.oa?id=37072379013 https://www.redalyc.org/journal/370/37072379013/ https://www.redalyc.org/journal/370/37072379013/html/ https://www.redalyc.org/journal/370/37072379013/37072379013.epub https://www.redalyc.org/journal/370/37072379013/movil 10.20937/RICA.53565 en http://www.redalyc.org/revista.oa?id=370 Revista Internacional de Contaminación Ambiental application/pdf Universidad Nacional Autónoma de México Revista Internacional de Contaminación Ambiental (México) Num.3 Vol.36