Assessment of the toxicity of sediment and seawater polluted by the Prestige fuel spill using bioassays with clams (Venerupis pullastra, Tappes decussatus and Venerupis rhomboideus) and the microalga Skeletonema costatum

Assessment of the toxicity of sediment and seawater polluted by the Prestige fuel spill using bioassays with clams (Venerupis pullastra, Tappes decussatus and Venerupis rhomboideus) and the microalga Skeletonema costatum

In this study we present the early monitoring of the pollution caused by the accident of the Prestige tanker off the Galician coast. To evaluate the toxicity of sediment and water exposed to fuel, three kinds of bioassays were carried out using juvenile clams, clam embryos and microalgae. Firstly, t...

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Huvudupphovsmän: Mariño-Balsa, JC, Pérez, P, Estévez-Blanco, P, Saco-Álvarez, L, Fernández, E, Beiras, R
Materialtyp: Online
Språk:eng
Publicerad: Iniversidad Autónoma de Baja California 2003
Länkar:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/128
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id oai:cienciasmarinas.com.mx:article-128
record_format ojs
institution Ciencias Marinas
collection OJS
language eng
format Online
author Mariño-Balsa, JC
Pérez, P
Estévez-Blanco, P
Saco-Álvarez, L
Fernández, E
Beiras, R
spellingShingle Mariño-Balsa, JC
Pérez, P
Estévez-Blanco, P
Saco-Álvarez, L
Fernández, E
Beiras, R
Assessment of the toxicity of sediment and seawater polluted by the Prestige fuel spill using bioassays with clams (Venerupis pullastra, Tappes decussatus and Venerupis rhomboideus) and the microalga Skeletonema costatum
author_facet Mariño-Balsa, JC
Pérez, P
Estévez-Blanco, P
Saco-Álvarez, L
Fernández, E
Beiras, R
author_sort Mariño-Balsa, JC
title Assessment of the toxicity of sediment and seawater polluted by the Prestige fuel spill using bioassays with clams (Venerupis pullastra, Tappes decussatus and Venerupis rhomboideus) and the microalga Skeletonema costatum
title_short Assessment of the toxicity of sediment and seawater polluted by the Prestige fuel spill using bioassays with clams (Venerupis pullastra, Tappes decussatus and Venerupis rhomboideus) and the microalga Skeletonema costatum
title_full Assessment of the toxicity of sediment and seawater polluted by the Prestige fuel spill using bioassays with clams (Venerupis pullastra, Tappes decussatus and Venerupis rhomboideus) and the microalga Skeletonema costatum
title_fullStr Assessment of the toxicity of sediment and seawater polluted by the Prestige fuel spill using bioassays with clams (Venerupis pullastra, Tappes decussatus and Venerupis rhomboideus) and the microalga Skeletonema costatum
title_full_unstemmed Assessment of the toxicity of sediment and seawater polluted by the Prestige fuel spill using bioassays with clams (Venerupis pullastra, Tappes decussatus and Venerupis rhomboideus) and the microalga Skeletonema costatum
title_sort assessment of the toxicity of sediment and seawater polluted by the prestige fuel spill using bioassays with clams (venerupis pullastra, tappes decussatus and venerupis rhomboideus) and the microalga skeletonema costatum
description In this study we present the early monitoring of the pollution caused by the accident of the Prestige tanker off the Galician coast. To evaluate the toxicity of sediment and water exposed to fuel, three kinds of bioassays were carried out using juvenile clams, clam embryos and microalgae. Firstly, the burrowing behaviour of Venerupis pullastra and Tappes decussatus in the sediment collected from two beaches of similar characteristics but different pollution conditions, was studied over 24 h. No significant differences were observed between the two sediments. Secondly, embryogenesis success of Venerupis rhomboideus was recorded after incubation in seawater and elutriates obtained from affected areas. In this case, fuel-polluted seawater showed a marked inhibition of embryogenesis, while sediment elutriates showed moderate toxicity. Parallel bioassays with the diatom Skeletonema costatum were carried out using sediment elutriates and filtered seawater from the sampling sites. The response variable measured was the maximum quantum yield of photosynthesis (Φpo) using a Fast Repetition Rate Fluorometer (FRRF). In the first sampling, significant differences were found in the response of S. costatum cultured in the elutriates as compared to the control after 5 h exposure. The results corresponding to the second sampling showed statistically significant lower values of Φpo in the culture incubated in M2 water as compared with the control, indicating that the water-accommodated fraction of fuel at this site was the most toxic.
publisher Iniversidad Autónoma de Baja California
publishDate 2003
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/128
_version_ 1715723924772225024
spelling oai:cienciasmarinas.com.mx:article-1282019-04-29T20:13:44Z Assessment of the toxicity of sediment and seawater polluted by the Prestige fuel spill using bioassays with clams (Venerupis pullastra, Tappes decussatus and Venerupis rhomboideus) and the microalga Skeletonema costatum Evaluación de la toxicidad de sedimento y agua de mar contaminados por el vertido de fuel del Prestige, mediante el uso de bioensayos con las almejas Venerupis pullastra, Tappes decussatus y Venerupis rhomboideus y la microalga Skeletonema costatum Mariño-Balsa, JC Pérez, P Estévez-Blanco, P Saco-Álvarez, L Fernández, E Beiras, R bioassay clams microalgae fuel Prestige bioensayos almejas microalga fuel Prestige In this study we present the early monitoring of the pollution caused by the accident of the Prestige tanker off the Galician coast. To evaluate the toxicity of sediment and water exposed to fuel, three kinds of bioassays were carried out using juvenile clams, clam embryos and microalgae. Firstly, the burrowing behaviour of Venerupis pullastra and Tappes decussatus in the sediment collected from two beaches of similar characteristics but different pollution conditions, was studied over 24 h. No significant differences were observed between the two sediments. Secondly, embryogenesis success of Venerupis rhomboideus was recorded after incubation in seawater and elutriates obtained from affected areas. In this case, fuel-polluted seawater showed a marked inhibition of embryogenesis, while sediment elutriates showed moderate toxicity. Parallel bioassays with the diatom Skeletonema costatum were carried out using sediment elutriates and filtered seawater from the sampling sites. The response variable measured was the maximum quantum yield of photosynthesis (Φpo) using a Fast Repetition Rate Fluorometer (FRRF). In the first sampling, significant differences were found in the response of S. costatum cultured in the elutriates as compared to the control after 5 h exposure. The results corresponding to the second sampling showed statistically significant lower values of Φpo in the culture incubated in M2 water as compared with the control, indicating that the water-accommodated fraction of fuel at this site was the most toxic. En este estudio presentamos los primeros resultados obtenidos del control de la contaminación producida por el accidente del petrolero Prestige en la costa de Galicia. Para evaluar la toxicidad del agua y el sedimento expuestos al fuel, se realizaron tres tipos de bioensayos: usando almejas juveniles, embriones de almeja y una microalga. En los primeros, se evaluó el comportamiento de enterramiento de Venerupis pullastra y Tappes decussatus durante las primeras 24 h, en dos muestras de sedimento procedentes de dos playas expuestas, una de ellas contaminada por fuel y la otra aparentemente limpia. No se encontraron diferencias significativas entre los dos tipos de sedimento. En segundo lugar se estudió el éxito en la embriogénesis de Venerupis rhomboideus después de la incubación en agua de mar y lixiviados de sedimento recogidos en las zonas afectadas. En este caso, el agua contaminada con fuel mostró una marcada inhibición de la embriogénesis, siendo moderada en los lixiviados. Al mismo tiempo se realizaron bioensayos, también con agua y sedimento de estas mismas zonas, con la diatomea Skeletonema costatum. La variable respuesta medida fue el máximo rendimiento fotosintético (Φpo) usando un fluorómetro de repetición rápida de destellos (FRRF, por sus siglas en inglés). En el primer muestreo se observaron diferencias significativas entre el Φpo medido en S. costatum cultivada en lixiviados y en agua control después de 5 h de exposición. Los resultados correspondientes al segundo muestreo proporcionaron valores significativamente más bajos de Φpo en los cultivos en agua de M2 comparados con los del control, lo que indica que la fracción soluble del fuel resultó ser la más tóxica. Iniversidad Autónoma de Baja California 2003-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed research note Nota de investigación arbitrada application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/128 10.7773/cm.v29i1.128 Ciencias Marinas; Vol. 29 No. 1 (2003); 115-122 Ciencias Marinas; Vol. 29 Núm. 1 (2003); 115-122 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/128/105

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