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Título

Effects of fish oil replacement and re-feeding on the bioaccumulation of organochlorine compounds in gilthead sea bream (Sparus aurata L.) of market size

AutorNácher-Mestre, Jaime; Serrano, Roque; Benedito-Palos, Laura ; Navarro, Juan Carlos ; López, Francisco J.; Pérez-Sánchez, Jaume
Palabras claveOrganochlorine compounds
Bioaccumulation
Sparus aurata
Fish feed
Marine aquaculture
Fecha de publicación17-may-2009
EditorElsevier
CitaciónChemosphere 76(6): 811-817 (2009)
ResumenOrganochlorine pesticide residues and polychlorinated biphenyls were determined in raw materials, fish feeds and fillets from fish exposed through the productive cycle (14 months) to experimental diets with different percentages of fish oil replacement with vegetable oils. Detectable amounts of organochlorine compounds were found in raw materials derived from fish sources with none being detected in vegetable ingredients. Fish feeds presented trace concentrations of contaminants at the ng/g level, which varied according to the contribution of the different resources used in their manufacture. Contaminants did not accumulate during the first 11 months of exposure, and low concentrations of organochlorine compounds were found both at the start and at the end of this feeding period. Fillets from fish fed the fish oil diet presented the highest concentrations of organochlorine compounds, with these decreasing in proportion to fish oil replacement. Three months of fish oil re-feeding during the finishing phase only produced significant bioaccumulation over the course of the first month. By optimizing fish meal and fish oil replacement with vegetable oils alternative feeds can contribute to significantly reduce the risk of organochlorine uptake by consumers.
Descripción28 pages, 3 figures, 4 tables.-- PMID: 19450868 [PubMed].-- Printed version published Aug 2009.
Versión del editorhttp://dx.doi.org/10.1016/j.chemosphere.2009.04.046
URIhttp://hdl.handle.net/10261/14873
DOI10.1016/j.chemosphere.2009.04.046
ISSN0045-6535
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