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Titolo:
Metal accumulation and metallothionein in brown trout, Salmo trutta, from two Norwegian rivers differently contaminated with Cd, Cu and Zn
Autore:
Olsvik, PA; Gundersen, P; Andersen, RA; Zachariassen, KE;
Indirizzi:
Norwegian Univ Sci & Technol, Dept Zool, N-7491 Trondheim, Norway Norwegian Univ Sci & Technol Trondheim Norway N-7491 1 Trondheim, Norway Norwegian Univ Sci & Technol, Dept Chem, N-7491 Trondheim, Norway Norwegian Univ Sci & Technol Trondheim Norway N-7491 1 Trondheim, Norway
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
fascicolo: 2, volume: 128, anno: 2001,
pagine: 189 - 201
SICI:
1532-0456(200102)128:2<189:MAAMIB>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHAR SALVELINUS-ALPINUS; CLARK-FORK RIVER; RAINBOW-TROUT; GAIRDNERI RICHARDSON; ONCORHYNCHUS-MYKISS; WATERBORNE CADMIUM; PHOXINUS-PHOXINUS; ZINC; FISH; ELIMINATION;
Keywords:
brown trout; gills; liver; kidney; metallothionein; Cd; Cu; Zn;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Olsvik, PA Norwegian Univ Sci & Technol, Dept Zool, N-7491 Trondheim, Norway Norwegian Univ Sci & Technol Trondheim Norway N-7491 , Norway
Citazione:
P.A. Olsvik et al., "Metal accumulation and metallothionein in brown trout, Salmo trutta, from two Norwegian rivers differently contaminated with Cd, Cu and Zn", COMP BIOC C, 128(2), 2001, pp. 189-201

Abstract

In this work we have studied the accumulation of heavy metals in two browntrout (Salmo trutta) populations in their natural environment and the participation of metal binding to metallothionein (MT) in this process. Cd, Cu and Zn concentrations, total MT (including Cu MT) and Cd/Zn MT were measured in the gills, liver and kidney of trout inhabiting two rivers, one Cu-contaminated and the other Cd/Zn-contaminated, located at Roros, Central Norway. In both populations, high levels of Cu were found in the liver, whereas Cd was accumulated in liver and particularly in the kidney. The proportionsof Cd/Zn MT and Cu MT in liver and kidney, but not in gills, reflected theaccumulated and the environmental concentrations of these metals. The total. Cu MT concentrations in the investigated tissues, however, were highest in trout from the river with the lowest ambient Cu concentration. It is suggested that MTs are of less importance in Cu-acclimated trout. The data also suggest that acclimation to a Cu-rich environment involves reduced Cu accumulation or increased Cu elimination. In trout from the Cd-rich environment, this metal was mainly bound to MT, whereas in trout from the Cu-rich environment Cd was also associated with non-MT proteins. These findings emphasize the importance to determine both Cd/Zn MT and Cu MT levels, when the participation of this protein in metal handling in trout tissues is investigated. (C) 2001 Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 14:19:27