Factors Affecting the use of Dreissena polymorpha as a Bioindicator: the PCB Pollution in Lake Como (N. Italy) |
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| Authors: | A Binelli S Galassi A Provini |
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| Institution: | (1) Department of Biology, University of Milan, Milan, Italy;(2) Department of Biotechnology and Biosciences, University of Milan – Bicocca, Milan, Italy;(3) Department of Biology, University of Milan, Milan, Italy |
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| Abstract: | The aim of this study was to assess the PCB pollutionof the South-Western branch of Lake Como by using thezebra mussel (Dreissena polymorpha) as abioindicator since its recent reintroduction. Someenvironmental and physiological variables influencingaccumulation processes of organochlorine compounds inDreissena were investigated because climaticfactors may affect life cycle, reproductive stage andage. PCB levels were highest in the soft tissues ofDreissena close to the industrialized area ofComo (2298 ng g-1 of lipids) and slowly decrease goingnorth, reaching approximately half this value at theclosing section of the lake branch. Nonetheless, thePCB concentrations are well below the dangerous levelsfor the aquatic environment. |
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| Keywords: | bioindicator Lake Como PCBs zebra mussel |
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