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Author (up) Griboff, J.; Horacek, M.; Wunderlin, D.A.; Monferran, M.V. url  doi
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  Title Bioaccumulation and trophic transfer of metals, As and Se through a freshwater food web affected by antrophic pollution in Cordoba, Argentina Type Journal Article
  Year 2017 Publication Ecotoxicology and Environmental Safety Abbreviated Journal Ecotoxicol Environ Saf  
  Volume 148 Issue Pages 275-284  
  Keywords Aquatic organisms; As; Biomagnification; Food web; Metals; Stable isotopes  
  Abstract The concentration of metals (Al, Cr, Mn, Fe, Ni, Cu, Zn, Ag, Cd, Hg, Pb, U), As and Se in different ecosystem components (water, sediment, plankton, shrimp, and fish muscle) has been determined in a eutrophic reservoir in the Province of Cordoba (Argentina). Los Molinos Lake (LML) was sampled during the dry (DS) and wet seasons (WS) in order to examine the bioaccumulation and transfer of these inorganic elements through the food web. Stable nitrogen isotope (delta15N) was used to investigate trophic interactions. According to this, samples were divided into three categories: plankton, shrimp (Palaemonetes argentinus) and fish (Silverside, Odontesthes bonariensis). The bioaccumulation factor (BAF) was calculated for the organisms, and it was determined that the elements analyzed undergo bioaccumulation, especially in organisms such as plankton. The invertebrates were characterized by the highest BAF for Cu and Zn in both seasons, As (DS), and Cd and Hg (WS). The fish muscle was characterized by the highest BAF for Se (WS), Ag and Hg (DS). On the other hand, a significant decrease in Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Cd and U concentrations through the analyzed trophic web during both seasons was observed. Moreover, a significant increase in Hg levels was observed with increasing trophic levels in the DS, indicating its biomagnification. Despite the increasing impact of metals, As and Se pollution in the studied area due to urban growth and agricultural and livestock activities, no previous study has focused on the behavior and relationships of these pollutants with the biotic and abiotic components of this aquatic reservoir. We expect that these findings may be used for providing directions or guidance for future monitoring and environmental protection policies.  
  Address ICYTAC, Instituto de Ciencia y Tecnologia de Alimentos Cordoba, CONICET and Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba, Bv. Dr. Juan Filloy s/n, Ciudad Universitaria, 5000 Cordoba, Argentina. Electronic address: mmonferran@fcq.unc.edu.ar  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0147-6513 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:29078130 Approved no  
  Call Number ref @ user @ Serial 98006  
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