| The role of zooplankton in DDT biomagnification in a pelagic food web of Lake Maggiore (Northern Italy). | |
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MedLine Citation:
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PMID: 20437105 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: In the present study, we report the analytical results of pp'DDT, pp'DDE and pp'DDD determination in lake water, plankton and zooplanktivorous fish of Lake Maggiore (Northern Italy), rather recently polluted by DDT of industrial origin, in order to understand the bottom-up pollution transfer among the abiotic and biotic components of the lake ecosystem. MATERIALS AND METHODS: Fourteen water sampling campaigns were carried out from March 2003 to January 2009 in the water column of the deepest point (Ghiffa) of Lake Maggiore. Suspended and dissolved pollutants were determined separately. Three sampling campaigns were carried out from July 2008 to January 2009 for zooplankton and pelagic fish, and DDT residues were analysed by HRGC coupled with ECD and MS. Moreover, food items were detected in fish stomachs. RESULTS AND DISCUSSION: Starting from 2007, the DDT contamination along the water column became rather homogeneous, probably because no flooding or other relevant hydrological events occurred; although steady-state condition should be expected, lipid normalised concentrations of pp'DDE and pp'DDD in zooplankton exceeded the levels of the same compounds in zooplanktivorous fishes. CONCLUSION: As this finding represents a thermodynamic paradox since bioaccumulative pollutant concentrations are expected to increase along the trophic chain, it was supposed that the abiotic and biotic lake components were not in a steady-state condition in Lake Maggiore. |
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Authors:
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Roberta Bettinetti; Silvana Galassi; Licia Guzzella; Silvia Quadroni; Pietro Volta |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-05-01 |
Journal Detail:
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Title: Environmental science and pollution research international Volume: 17 ISSN: 1614-7499 ISO Abbreviation: Environ Sci Pollut Res Int Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-09-27 Completed Date: 2010-10-20 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9441769 Medline TA: Environ Sci Pollut Res Int Country: Germany |
Other Details:
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Languages: eng Pagination: 1508-18 Citation Subset: IM |
Affiliation:
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Department of Chemical and Environmental Sciences, University of Insubria, 22100 Como, Italy. roberta.bettinetti@uninsubria.it |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals DDT / analysis, metabolism* Dichlorodiphenyl Dichloroethylene / analysis, metabolism Dichlorodiphenyldichloroethane / analysis, metabolism Environmental Monitoring Fishes / metabolism Food Chain* Fresh Water / chemistry Pesticide Residues / metabolism Pesticides / analysis, metabolism* Water Pollutants, Chemical / analysis, metabolism* Zooplankton / metabolism* |
| Chemical | |
Reg. No./Substance:
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0/Pesticide Residues; 0/Pesticides; 0/Water Pollutants, Chemical; 50-29-3/DDT; 72-54-8/Dichlorodiphenyldichloroethane; 72-55-9/Dichlorodiphenyl Dichloroethylene |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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