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Titolo:
Dietary Ca inhibits waterborne Cd uptake in Cd-exposed rainbow trout, Oncorhynchus mykiss
Autore:
Zohouri, MA; Pyle, GG; Wood, CM;
Indirizzi:
McMaster Univ, Dept Biol, Hamilton, ON L8S 4K1, Canada McMaster Univ Hamilton ON Canada L8S 4K1 ol, Hamilton, ON L8S 4K1, Canada
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
fascicolo: 3, volume: 130, anno: 2001,
pagine: 347 - 356
SICI:
1532-0456(200111)130:3<347:DCIWCU>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
TELEOST OREOCHROMIS-MOSSAMBICUS; BRANCHIAL CALCIUM-UPTAKE; SALMO-GAIRDNERI; CADMIUM-BINDING; FISH GILLS; METAL TOXICITY; COPPER; ACCUMULATION; TRANSPORT; HARDNESS;
Keywords:
dietary calcium; gill; hypocalcemia; Oncorhynchus mykiss; rainbow trout; waterborne cadmium;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Wood, CM McMaster Univ, Dept Biol, 1280 Main St W, Hamilton, ON L8S 4K1, Canada McMaster Univ 1280 Main St W Hamilton ON Canada L8S 4K1 1, Canada
Citazione:
M.A. Zohouri et al., "Dietary Ca inhibits waterborne Cd uptake in Cd-exposed rainbow trout, Oncorhynchus mykiss", COMP BIOC C, 130(3), 2001, pp. 347-356

Abstract

The effects of chronic exposure to waterborne Cd and elevated dietary Ca, alone and in combination, were examined in juvenile rainbow trout, Oncorhynchus mykiss. Fish were chronically exposed to 0.05 (control) or 2.56 mug/l Cd [as Cd(NO3)(2) (.) 4H(2)O] and were fed 2% body mass/day of control (29.6 mg Ca/g) or Ca-supplemented trout food (52.8 mg Ca/g as CaCl2 (.) 2H(2)O). Cd accumulated mainly in gill, liver, and kidney. Waterborne Cd inhibitedunidirectional Ca uptake from water into the gill and induced hypocalcemiain the plasma on day 40. Waterborne Cd also induced an elevated Ca concentration on day 20 in the gill tissue of trout fed the Ca-supplemented diet and a decreased Ca concentration on day 35 in the gills of trout fed the control diet. Dietary Ca protected against Cd accumulation in gill, liver, andkidney, but did not protect against the inhibition of Ca uptake into the gill or plasma hypocalcemia. When fed Ca-supplemented diet and exposed to waterborne Cd, fish showed 35% mortality, compared to 0-2% in control fish and in the Cd-exposed fish with normal Ca in the diet. Growth, on the other hand, was not affected by any treatment. (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 23/01/20 alle ore 03:38:50