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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Nacional Autónoma de México
2018
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| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=37055963005 https://www.redalyc.org/journal/370/37055963005/ https://www.redalyc.org/journal/370/37055963005/html/ https://www.redalyc.org/journal/370/37055963005/37055963005.epub https://www.redalyc.org/journal/370/37055963005/movil https://doi.org/10.20937/RICA.2018.34.01.05 |
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- SEASONAL LEVELS OF HEAVY METALS IN SOFT TISSUE AND MUSCLE OF THE PEN SHELL Atrina maura (SOWERBY, 1835) (BIVALVIA: PINNIDAE) FROM A FARM IN THE SOUTHEASTERN COAST OF THE GULF OF CALIFORNIA, MEXICO Andrés Martín Góngora-Gómez Ana Laura Domínguez-Orozco Brenda Paulina Villanueva-Fonseca Norma Patricia Muñoz-Sevilla Manuel García-Ulloa Ciencias de la Tierra culture bivalves monitoring seasonal variation Metal concentration The pen shell (Atrina maura) is a filter-feeder bivalve that may accumulate metals in its body. The objective of this study was to determine seasonal concentrations of copper (Cu), chromium (Cr), cadmium (Cd), nickel (Ni), lead (Pb), arsenic (As), zinc (Zn), and mercury (Hg) in soft tissue and muscle of A. maura cultivated in a farm located in the southeastern coast of the Gulf of California from summer 2011 to summer 2012. Except for Cu, the higher metal concentrations were found during the dry season (winter 2011-spring 2012). The mean values in soft tissue fluctuated from 0.064 ± 0.01 µg/g (dry weight dw) for Hg to 485.66 ± 71.12 µg/g (dw) for Zn, while for muscle they varied from 0.058 ± 0.03 µg/g (dw) for Hg to 64.83 ± 4.90 µg/g (dw) for Zn. Concentrations of cadmium (18.15 µg/g in soft tissue and 1.82 µg/g in muscle, wet weight ww) and lead (2.31 µg/g in soft tissue, ww) exceeded the permissible limits (36.3, 3.64, and 2.31 times, respectively) recommended by the sanitary regulations of the official mexican standards. The results suggest that variation of metal levels in cultivated pen shell could be influenced by seasonality and anthropogenic activities such as agriculture and aquaculture developed around the culture zone. Continual monitoring of metals in farmed pen shell is recommended. 2018 artículo científico 0188-4999 https://www.redalyc.org/articulo.oa?id=37055963005 https://www.redalyc.org/journal/370/37055963005/ https://www.redalyc.org/journal/370/37055963005/html/ https://www.redalyc.org/journal/370/37055963005/37055963005.epub https://www.redalyc.org/journal/370/37055963005/movil https://doi.org/10.20937/RICA.2018.34.01.05 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.1 Vol.34