Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 107, Issue -, Pages 154-161Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2014.05.006
Keywords
Bioaccumulation; Heavy metals; Llobregat River; Mediterranean; Cyprinid fish
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Funding
- Spanish Ministry of Economy and Competitiveness through the project SCARCE (Consolider-Ingenio) [CSD2009-00065]
- University of Girona [SING12/09]
- Spanish Ministry of Education [AP2010-4025]
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Concentration of trace metals (Al, Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb and As) in the muscle of six fish species was analyzed to determine the variation with fish size and fish species in an Iberian river with moderate metal pollution. Al, Fe and Zn were the most abundant metals across sites. Fish size and sampling site explained more variation than fish species, and a high intraspecific variability (among individuals) in metal loads was also observed. Considering the most spread species, concentrations were highest in bleak (Alburnus alburnus) and lowest in gudgeon (Gobio occitaniae) for all the elements. Metal loads were comparable with literature data from contaminated sites, often exceeding recommended European Environmental Quality Standards. The relationships between metal concentration and fish size varied markedly among sites, elements, and fish species. The slopes of these relationships were often significantly heterogeneous, a fact barely acknowledged in the literature, and were often negative, probably due to size-specific metabolic rates related to fish growth. (C) 2014 Elsevier Inc. All rights reserved.
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