Integrated use of biomarkers (O : N ratio and acetylcholinesterase inhibition) on aulacomya ater (Molina, 1782) (Bivalvia: Mytilidae) as a criteria for effects of organophosphate pesticide exposition
The effect of residual concentrations of organophosphate pesticide chlorpyrifos (Lorsban 4E) on the activity of the acetylcholinesterase enzyme and oxygen : nitrogen ratio in the mussel Aulacomya ater was analyzed. Toxicity tests show a sensitivity to the pesticide in the bivalve estimated at 16 μg...
| Autor Principal: | Führer, Eduardo |
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| Otros Autores: | Rudolph, Anny, Espinoza, Claudio, Díaz, Rodrigo, Gajardo, Marisol, Camaño, Nuria |
| Formato: | Artículo |
| Idioma: | English |
| Publicado: |
Hindawi Publishing Corporation
2015
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| Acceso en línea: |
Journal of Toxicology |
| Etiquetas: |
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| Sumario: |
The effect of residual concentrations of organophosphate pesticide chlorpyrifos (Lorsban 4E) on the activity of the acetylcholinesterase enzyme and oxygen : nitrogen ratio in the mussel Aulacomya ater was analyzed. Toxicity tests show a sensitivity to the pesticide in the bivalve estimated at 16 μg L−1 (
L C
5 0
−
9 6 h o u r s
). Concentrations between 0.2 and 1.61 μg L−1 were able to inhibit significantly the AChE activity, and concentrations between 0.8 and 1.61 μg L−1 stimulate ammonia excretion and decrease oxygen : ammonia-N (O : N) ratio, with respect to the control group. A. ater proved to be a species sensitive to pesticide exposure and easy to handle in lab conditions. Thus, it is recommended as a bioindicator for use in programs of environmental alertness in the Eastern South Pacific coastal zone. |
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