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The use of biomarkers to evaluate the toxicity of metaldehyde and methiocarb baits to the terrestrial isopod porcellionides pruinosus Brandt, 1833

Santos, Miguel J. G., Ferreira, Nuno, Soares, Amadeu M. V. M. and Loureiro, Susana 2010. The use of biomarkers to evaluate the toxicity of metaldehyde and methiocarb baits to the terrestrial isopod porcellionides pruinosus Brandt, 1833. In: Hamamura, N., Suzuki, S., Mendo, S., Barroso, C. M., Iwata, H. and Tanabe, S. eds. Interdisciplinary Studies on Environmental Chemistry — Biological Responses to Contaminants, TERRAPUB, pp. 139-147.

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Abstract

Biochemical indicators (biomarkers) are known to provide early warning signs of environmental pollution or stress conditions to the organisms, by measuring cellular or molecular responses of the target organism to xenobiotic agents. In this study, the terrestrial isopod Porcellionides pruinosus was exposed to these two molluscicides and three different enzymes, glutathione Stransferase (GST), acetylcholinesterase (AChE) and catalase (CAT) were analyzed to evaluate the effects of the application of the two molluscicides in single exposures and binary mixtures tests. Results indicate that the carbamate methiocarb inhibited significantly AChE activity, but no effects were observed in CAT and GST levels. The exposure to the metaldehyde had no effects on AChE, but a decrease in the higher exposure period was observed in GST levels as well as a general increase in CAT activity. The combined exposure of the two molluscicides resulted in a general decrease in AChE and CAT activity, but no visible effects were observed in terms of GST. The use of several biomarkers was a suitable tool to understand the mode of action of these two molluscicides in this isopod species.

Item Type: Book Section
Date Type: Publication
Status: Published
Schools: Biosciences
Publisher: TERRAPUB
Date of First Compliant Deposit: 21 July 2017
Last Modified: 21 Oct 2019 13:55
URI: http://orca-mwe.cf.ac.uk/id/eprint/102742

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