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Annales de Limnologie - International Journal of Limnology Annales de Limnologie - International Journal of Limnology

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Evaluation of enzyme biomarkers in freshwater invertebrates from Taro and Ticino river, Italy

Published online by Cambridge University Press:  15 February 2009

E. Berra ,
M. Forcella ,
R. Giacchini ,
L. Marziali ,
B. Rossaro  and
P. Parenti
E. Berra
Affiliation:
Department of Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, Italy.
M. Forcella
Affiliation:
Department of Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, Italy.
R. Giacchini
Affiliation:
Department of Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, Italy.
L. Marziali
Affiliation:
Department of Biology, University of Milano, via Celoria 26, 20133, Milano, Italy.
B. Rossaro
Affiliation:
Department of Biology, University of Milano, via Celoria 26, 20133, Milano, Italy.
P. Parenti
Affiliation:
Department of Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, Italy.
Corresponding
E-mail address:
paolo.parenti@unimib.it
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Abstract

Benthic macroinvertebrates are an essential component of freshwater environments. The ecotoxicological risk of benthic communities, estimated through the assay of biochemical markers, can be used as an early warning signal for environment alterations. In this work the activities of a number of enzymes, regarded as potential biomarker of exposure to pollutants (catalase, acetylcholinesterase, glutathione-S-transferase) was determined in homogenates of whole organisms. Specimens were collected in the rivers Taro and Ticino, northern Italy, in stony bottom reaches in five and three stations respectively. The orders of aquatic Insects Diptera, Plecoptera, Odonata, Ephemeroptera and Trichoptera, the Crustacea Amphipoda, and Annelida Oligochaeta were examined. Additional enzymes, such as NADP-dependent malate dehydrogenase, isocitric dehydrogenase, glucose-6phosphate dehydrogenase, alcohol dehydrogenase, and lactate dehydrogenase were considered in the study. Results emphasize significant differences among taxa concerning the specific activity of most enzymes.

Keywords

biomarkers enzymes invertebrates insect larvae chironomidae
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 40 , Issue 3 , September 2004 , pp. 169 - 180
Copyright
© Université Paul Sabatier, 2004

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