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Is the digestive gland of Mytilus galloprovincialis a tissue of choice for estimating cadmium exposure by means of metallothioneins?

Raspor, Biserka; Dragun, Zrinka; Erk, Marijana; Ivanković, Dušica; Pavičić, Jasenka (2004) Is the digestive gland of Mytilus galloprovincialis a tissue of choice for estimating cadmium exposure by means of metallothioneins?. Science of the Total Environment, 333 (1-3). pp. 99-108. ISSN 0048-9697

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A study performed over 12 months with caged mussels M. galloprovincialis in the coastal marine zone which is under the urban pressure, reveales a temporal variation of digestive gland mass which causes "biological dilution" of cytosolic metallothionein (MT) and trace metal (Cd, Cu, Zn, Fe, Mn) concentrations. The dilution effect was corrected by expressing the cytosolic MT and metal concentrations as the tissue content. Consequently, the changes of the average digestive gland mass coincide with the changes of MT and trace metal contents. In the period from February to June, MT contents are nearly twice and trace metal contents nearly three times higher than the remaining months. The period of increased average digestive gland mass, of MT and trace metal contents is probably overlapping with the sexual maturation of mussels (gametogenesis) and the enhanced food availability. Due to the fact that natural factors contribute more to the MT content than the sublethal levels of Cd, digestive gland of M. galloprovincialis is not considered as a tissue of choice for estimating Cd exposure by means of MTs.

Item Type: Article
Uncontrolled Keywords: caged bivalves; Mytilus galloprovincialis; digestive gland mass variation; tissue content of metallothioneins and trace metals
Subjects: NATURAL SCIENCES > Biology
NATURAL SCIENCES > Biology > Ecology
NATURAL SCIENCES > Interdisciplinary Natural Sciences > Marine Science
Divisions: Division for Marine and Enviromental Research
Project titleProject leaderProject codeProject type
Metali i stanični biomarkeriBiserka Raspor0098130UNSPECIFIED
Depositing User: Zrinka Dragun
Date Deposited: 06 May 2015 14:19
DOI: 10.1016/j.scitotenv.2004.05.008

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