English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/15283
Title: Age dependence of the accumulation of organochlorine pollutants in brown trout (Salmo trutta) from a remote high mountain lake (Redó, Pyrenees)
Authors: Vives, Ingrid; Grimalt, Joan O.; Ventura, Mario; Catalán, Jordi; Rosseland, B. O.
Keywords: High mountain areas
Organochlorine compounds
age dependence
Issue Date: Jan-2005
Publisher: Elsevier
Citation: Environmental Pollution 133(2): 343-350 (2005)
Abstract: Polychlorobiphenyls (PCBs), hexachlorocyclohexanes (HCHs), hexachlorobenzene (HCB) and DDT were examined in the muscle of brown trout (Salmo trutta) from a high mountain lake located in the Pyrenees (Catalonia, Spain) that was used as a model of these lacustrine environments. Results indicate that fish age is the main factor of variability among specimens in this population that is subjected to atmospheric inputs of the organochlorine compounds (OC). Increases of 2- and 20-fold between fish aged 1 year and 15 years old are found. The observed pattern cannot be explained in terms of fish size, condition factor, or muscle lipid content. Higher molecular weight compounds (higher lipophilicity) are better correlated with fish age than low molecular weight compounds. A transformation from 4,4′-DDT to 4,4′-DDE occurs in fish after ingestion; this results in amplified age-dependent signals, especially in male specimens. In contrast, PCB congener #180 has lower age dependence than the general OC group, which could be due to its high hydrophobicity (log Kow > 7). In any case, selective accumulation of hydrophobic compounds is already observed among younger fish (age, 1 year). Due to this effect, the relative OC composition does not reflect the main OC pollutants in the lake waters.
Trout in high mountain lakes display age-dependent accumulation of certain organochlorine pollutants.
Description: 8 pages, 3 figures.-- PMID: 15519465 [PubMed].-- Available online Jul 31, 2004.
Publisher version (URL): http://dx.doi.org/10.1016/j.envpol.2004.05.027
URI: http://hdl.handle.net/10261/15283
DOI: 10.1016/j.envpol.2004.05.027
ISSN: 0269-7491 (Print)
1873-6424 (Online)
Appears in Collections:(IDAEA) Artículos
(CEAB) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.