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 16μg L -1 (LC50-96 hours). Concentrations between 0.2 and 1.61g L-1 were able to inhibit significantly the AChE activity, and concentrations between 0.8 and 1.61μg 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. Copyright 2012 Eduardo Fhrer et al.
CITATION STYLE
Führer, E., Rudolph, A., Espinoza, C., Díaz, R., Gajardo, M., & Camaño, N. (2012). 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. Journal of Toxicology, 2012. https://doi.org/10.1155/2012/951568
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