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Fuga activa y pasiva como respuestas ecotoxicológicas: una reflexión sobre la relevancia de la exposición confinada

Authors: Araújo, Cristiano V. M.; Moreira-Santos, M.; Ribeiro, Rui G. L. G.;

Fuga activa y pasiva como respuestas ecotoxicológicas: una reflexión sobre la relevancia de la exposición confinada

Abstract

Los ensayos de toxicidad son herramientas complementarias usadas para evaluar el impacto ambiental en los ecosistemas y los riesgos a los que los receptores ecológicos están expuestos debido a la contaminación. Para aumentar el poder de predicción de los ensayos, se busca medir respuestas más relevantes con métodos de ensayo que simulen lo más fielmente posible las condiciones naturales de los ecosistemas. Los métodos comúnmente adoptados consisten en exponer los organismos a diferentes concentraciones en sistemas confinados, en los que el desplazamiento de los organismos a zonas con menor grado de contaminación no es posible. La alternativa para ello está en los ensayos de fuga activa que ya ha sido probada para algunas especies, y cuyos efectos a nivel de los ecosistemas, así como el riesgo de extinción de la población, son similares a la muerte de los organismos. Asimismo, la fuga puede darse a través de mecanismos pasivos de desplazamiento (drift), haciendo uso de la corriente para huir de la zona contaminada, cuando la movilidad del organismo es reducida respecto a la dispersión de la contaminación. Este trabajo presentará los métodos de ensayo de fuga activa y pasiva para organismos acuáticos en presencia de contaminantes, la importancia de estos ensayos en los estudios de dispersión de los organismos y recolonización de hábitats frente a los ensayos confinados, y finalmente algunas propuestas de estudios y resultados obtenidos.

Trabajo presentado en el XVI Seminario Ibérico de Química Marina, celebrado en Cádiz del 24 al 26 de enero de 2012.

Peer reviewed

Country
Spain
Related Organizations
Keywords

Fuga, Ecotoxicología, Avoidance, Ecotoxicology

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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