Uptake, depuration and effect of cadmium on the green mussel Perna viridis (L. 1758) (Mollusca: Bivalvia)

Uptake, depuration and effect of cadmium on the green mussel Perna viridis (L. 1758) (Mollusca: Bivalvia)

We evaluated the effect of a sublethal concentration of cadmium (0.04 µg Cd L–1) on the physiological condition of the juvenile green mussel Perna viridis (22.3 ± 2.33 mm shell height), collected in Guayacán, Sucre State, Venezuela. The mussels were exposed to the sublethal concentration for 7 days,...

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Autors principals: Narváez, N, Lodeiros, C, Nusetti, O, Lemus, M, Maeda-Martínez, AN
Format: Online
Idioma:eng
Publicat: Iniversidad Autónoma de Baja California 2005
Accés en línia:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/76
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spelling oai:cienciasmarinas.com.mx:article-762019-04-30T23:56:58Z Uptake, depuration and effect of cadmium on the green mussel Perna viridis (L. 1758) (Mollusca: Bivalvia) Incorporación, depuración y efecto del cadmio en el mejillón verde Perna viridis (L. 1758) (Mollusca: Bivalvia) Narváez, N Lodeiros, C Nusetti, O Lemus, M Maeda-Martínez, AN aquatic toxicology heavy metals physiological indices marine contamination bivalves toxicología acuática metal pesado indices fisiológicos contaminación marina bivalvos We evaluated the effect of a sublethal concentration of cadmium (0.04 µg Cd L–1) on the physiological condition of the juvenile green mussel Perna viridis (22.3 ± 2.33 mm shell height), collected in Guayacán, Sucre State, Venezuela. The mussels were exposed to the sublethal concentration for 7 days, and were then depurated during 52 days simultaneously in the laboratory and in the field in plastic baskets suspended from a long line. In both conditions, the concentration of cadium was measured and different physiological indices were determined: oxygen consumption, ammonia excretion, total protein content in tissues, RNA/DNA ratio, and height and mass of the shell and tissues. No significant differences in the physiological indices were obtained during the depuration process in the laboratory but, in general, all the indices tested increased during depuration in the field. The RNA/DNA index showed great variability, proving to be unsuitable to evaluate the toxic effect of cadmium; however, total protein content, shell and tissue height and mass and, particularly, oxygen consumption and ammonia excretion rate proved to be suitable to evaluate the physiological condition of mussels exposed to subletal concentrations of xenobiotics. Se evaluó el efecto de una concentración subletal de cadmio (0.04 µg Cd L–1) sobre la condición fisiológica de juveniles del mejillón verde Perna viridis (22.3 ± 2.33 mm de alto de la concha), recolectados en la localidad de Guayacán, Estado Sucre, Venezuela. Los organismos se expusieron a la concentración subletal durante 7 días, y después a un proceso de depuración de 52 días, en condiciones de laboratorio y en su medio natural (campo) mantenidos en cestas plásticas suspendidas de una línea madre (long-line). En ambas condiciones se midió las concentración de Cd en el tejido y se determinaron diferentes índices fisiológicos: consumo de oxígeno, excreción de amonio, proteínas totales, índice ARN/ADN y dimensión (alto), y masas secas de la concha y del tejido. Durante la exposición al metal en condiciones de laboratorio, no se observaron diferencias significativas en los índices utilizados; sin embargo, durante el proceso de depuración todos los parámetros de crecimiento, en general, aumentaron significativamente al final del experimento, en los organismos trasladados al medio natural. El índice ARN/ADN mostró gran variabilidad, lo que indica que éste no fue adecuado para evaluar el efecto del cadmio. Sin embargo, el contenido total de proteínas, la masa seca de los tejidos, el alto de la concha y, particularmente, el consumo de oxígeno y la excreción de amonio, mostraron ser índices apropiados para evaluar la condición fisiológica del mejillón expuesto a dosis subletales de cadmio. Iniversidad Autónoma de Baja California 2005-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/76 10.7773/cm.v31i11.76 Ciencias Marinas; Vol. 31 No. 1A (2005); 91-102 Ciencias Marinas; Vol. 31 Núm. 1A (2005); 91-102 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/76/56
institution Ciencias Marinas
collection OJS
language eng
format Online
author Narváez, N
Lodeiros, C
Nusetti, O
Lemus, M
Maeda-Martínez, AN
spellingShingle Narváez, N
Lodeiros, C
Nusetti, O
Lemus, M
Maeda-Martínez, AN
Uptake, depuration and effect of cadmium on the green mussel Perna viridis (L. 1758) (Mollusca: Bivalvia)
author_facet Narváez, N
Lodeiros, C
Nusetti, O
Lemus, M
Maeda-Martínez, AN
author_sort Narváez, N
title Uptake, depuration and effect of cadmium on the green mussel Perna viridis (L. 1758) (Mollusca: Bivalvia)
title_short Uptake, depuration and effect of cadmium on the green mussel Perna viridis (L. 1758) (Mollusca: Bivalvia)
title_full Uptake, depuration and effect of cadmium on the green mussel Perna viridis (L. 1758) (Mollusca: Bivalvia)
title_fullStr Uptake, depuration and effect of cadmium on the green mussel Perna viridis (L. 1758) (Mollusca: Bivalvia)
title_full_unstemmed Uptake, depuration and effect of cadmium on the green mussel Perna viridis (L. 1758) (Mollusca: Bivalvia)
title_sort uptake, depuration and effect of cadmium on the green mussel perna viridis (l. 1758) (mollusca: bivalvia)
description We evaluated the effect of a sublethal concentration of cadmium (0.04 µg Cd L–1) on the physiological condition of the juvenile green mussel Perna viridis (22.3 ± 2.33 mm shell height), collected in Guayacán, Sucre State, Venezuela. The mussels were exposed to the sublethal concentration for 7 days, and were then depurated during 52 days simultaneously in the laboratory and in the field in plastic baskets suspended from a long line. In both conditions, the concentration of cadium was measured and different physiological indices were determined: oxygen consumption, ammonia excretion, total protein content in tissues, RNA/DNA ratio, and height and mass of the shell and tissues. No significant differences in the physiological indices were obtained during the depuration process in the laboratory but, in general, all the indices tested increased during depuration in the field. The RNA/DNA index showed great variability, proving to be unsuitable to evaluate the toxic effect of cadmium; however, total protein content, shell and tissue height and mass and, particularly, oxygen consumption and ammonia excretion rate proved to be suitable to evaluate the physiological condition of mussels exposed to subletal concentrations of xenobiotics.
publisher Iniversidad Autónoma de Baja California
publishDate 2005
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/76
_version_ 1715723931458994176

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