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Abstract

Metallothioneins (MT) or MT-like metalloproteins (MTL) are important in trace metal regulation and detoxification and are present in the marine clam Macoma balthica in the Western Scheldt Estuary. Upon metal exposure, significant increases were observed in MTL average concentrations in clams but with notable seasonal variations: the clams appear to produce more MT in winter than in summer. Similar trends were observed for cadmium and copper measured at both total and cytosolic levels. For now, only the case of the relationships between MT and Cd concentrations (total and cytosolic) will be presented but is should also be noted that significant correlations also exist between MT and Cu as well as Zn concentrations. The dry weight of the clam, which is an important biological variable, will be considered regarding its relationship to MT concentration and content.

Additional information

Authors: MCCOURT J, JRC Geel (BE);CORDEIRO RAPOSO F, JRC Geel (BE);BORDIN G, JRC Geel (BE);RODRIGUEZ A R, JRC Geel (BE)
Bibliographic Reference: Paper presented: Adaptation to Stress in Aquatic and Terrestrial Ecosystems, Antwerp (NL), August 28-30, 1996
Availability: Available from (1) as Paper EN 40108 ORA
Record Number: 199710255 / Last updated on: 1997-04-01
Category: PUBLICATION
Original language: en
Available languages: en