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Titolo:
Accumulation, distribution and toxicology of dietary nickel in lake whitefish (Coregonus clupeaformis) and lake trout (Salvelinus namaycush)
Autore:
Ptashynski, MD; Pedlar, RM; Evans, RE; Wautier, KG; Baron, CL; Klaverkamp, JF;
Indirizzi:
Univ Manitoba, Dept Zool, Winnipeg, MB R3T 2N2, Canada Univ Manitoba Winnipeg MB Canada R3T 2N2 ol, Winnipeg, MB R3T 2N2, Canada Fisheries & Oceans Canada, Inst Freshwater, Winnipeg, MB R3T 2N6, Canada Fisheries & Oceans Canada Winnipeg MB Canada R3T 2N6 , MB R3T 2N6, Canada
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
fascicolo: 2, volume: 130, anno: 2001,
pagine: 145 - 162
SICI:
1532-0456(200110)130:2<145:ADATOD>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
COLISA-FASCIATUS BLOCH; FRESH-WATER FISH; METAL ACCUMULATION; CYPRINUS-CARPIO; HEAVY-METALS; TOXICITY; BIOACCUMULATION; CHLORIDE; SUDBURY; ONTARIO;
Keywords:
accumulation; dietary; distribution; fish; histopathology; metallothionein; nickel; toxicology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
62
Recensione:
Indirizzi per estratti:
Indirizzo: Klaverkamp, JF Univ Manitoba, Dept Zool, Winnipeg, MB R3T 2N2, Canada UnivManitoba Winnipeg MB Canada R3T 2N2 B R3T 2N2, Canada
Citazione:
M.D. Ptashynski et al., "Accumulation, distribution and toxicology of dietary nickel in lake whitefish (Coregonus clupeaformis) and lake trout (Salvelinus namaycush)", COMP BIOC C, 130(2), 2001, pp. 145-162

Abstract

An 18-day experiment was conducted to investigate the uptake and sublethaltoxicity of dietary Ni in adult lake whitefish (LWF, Coregonus clupeaformis) and lake trout (LT, Salvelinus namaycush) fed diets containing 0, 1000 and 10000 mug Ni/g, prepared with and without brine shrimp. The results of this experiment were used to design an experiment of longer duration in which one of the fish species was selected and exposed to lower dietary Ni doses. In the present study feed refusal was observed in LT and LWF fed 10 000 mug Ni/g, after three and 4-5 feedings, respectively. LT fed Ni-contaminated diets exhibited different patterns of Ni accumulation than LWF. IncreasedNi concentrations in all LWF tissues, except the intestine, were associated with increased doses of Ni. Copper and Zn concentrations in kidney and liver of LWF were altered. Metallothionein concentrations in kidneys of LT fed 1000 mug Ni/g and 10 000 mug Ni/g and LWF fed 10000 mug Ni/g and in livers of LWF fed 10000 mug Ni/g (diet without shrimp only) increased significantly. Increased lipid peroxide production in the plasma of LT fed 10000 mug Ni/g was observed. Blood glucose and electrolytes were affected by Ni exposure. Histopathological alterations were observed in kidneys of LWF fed low and high dose diets, livers of whitefish fed high dose diets, and intestines of LWF fed high dose diets and LT fed low and high dose diets. LT fed high dose diets exhibited significant decreases in weight. (C) 2001 Elsevier Science Inc. All rights reserved.

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Documento generato il 26/01/20 alle ore 16:12:01