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Metal exposure assessment in native fish, Mullus barbatus L., from the Eastern Adriatic Sea

Filipović Marijić, Vlatka; Raspor, Biserka (2007) Metal exposure assessment in native fish, Mullus barbatus L., from the Eastern Adriatic Sea. Toxicology Letters, 168 (3). pp. 292-301. ISSN 0378-4274

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Metallothionein (MT) and metal (Zn, Cu, Fe, Mn, Cd) association in the cytosol of liver, kidney and intestine was studied on native Mullus barbatus specimens. Investigated parameters of all specimens (1 to 8 year old) were related to the fish length, which reflects fish growth and aging. Cytosolic metal concentrations in liver, kidney and intestine are tissue specific but in general decrease as follows: Fe≈ Zn>Cu>Mn>Cd. Metallothionein levels are also tissue specific with the highest level in intestine, followed by kidney and liver. Percentage partition of MT and Zn in liver, kidney and intestine cytosol of red mullet is comparable. Associations of MT and metals that induce MT synthesis exist in liver for MT/Zn (r=0.28) and MT/Cu (r=0.26) and in intestine for MT/Cu (r=0.38). Unlike essential metals, there is no significant correlation between MT and the toxic metal Cd, what is ascribed to its very low cytosolic concentration. The most pronounced size-related accumulation is found for the toxic metal Cd in liver cytosol (r=0.69), indicating chronic Cd accumulation. Negative correlation between metals (Cd, Zn, Fe, Mn) and the condition factor also indicates chronic metal effects and their metabolic impact.

Item Type: Article
Uncontrolled Keywords: red mullet; metallothionein/metal tissue distribution; fish size/condition index related effects
Subjects: NATURAL SCIENCES > Interdisciplinary Natural Sciences > Environmental Science
Divisions: Division for Marine and Enviromental Research
Project titleProject leaderProject codeProject type
Stanične promjene u vodnih organizama pobuđene metalima-Marijana Erk098-0982934-2721MZOS
Depositing User: Vlatka Filipović Marijić
Date Deposited: 03 Sep 2020 10:57
DOI: 10.1016/j.toxlet.2006.10.026

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