Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

Are accumulated sulfide-bound metals metabolically available in the benthic oligochaete Tubifex tubifex?
De Jonge, M.; Eyckmans, M.; Blust, R.; Bervoets, L. (2011). Are accumulated sulfide-bound metals metabolically available in the benthic oligochaete Tubifex tubifex? Environ. Sci. Technol. 45(7): 3131-3137. https://dx.doi.org/10.1021/es1037595
In: Environmental Science and Technology. American Chemical Society: Easton. ISSN 0013-936X; e-ISSN 1520-5851, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine/Coastal

Authors  Top 

Abstract
    The present study evaluates the relationship between metal-binding sediment characteristics like acid volatile sulfides (AVS), metal accumulation, and internal metal distribution in the benthic oligochaete Tubifex tubifex and relates this accumulation to the induction of metallothionein-like proteins (MTLPs). In total, 15 Flemish lowland rivers were sampled. Cd, Cu, Zn, Pb, Ni, As, Cr, Co, and Ag concentrations were measured in environmental fractions (water and sediment) and worm tissue (both total and subcellular fractions). Furthermore, total cytosolic MTLP concentrations were measured in the worm tissue. Our results showed that Cd, Pb, Ni, and Cr were mainly stored as biological detoxified metal (BDM) while Cu, Zn, As, and Ag were mostly available in the metal sensitive fraction (MSF). A remarkable difference in the subcellular distribution of accumulated Cd, Ni, and Co between anoxic (SEMMe − AVS < 0; mostly stored as BDM) and oxic (SEMMe − AVS > 0; mostly stored in the MSF) sediments was noticed. Moreover, a rapid increase in MTLP induction was found when SEMTot − AVS > 0. Our results indicate that the accumulated sulfide-bound metals were detoxified and little available to the metabolism of T. tubifex under anoxic conditions.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors