EDP Sciences Journals List
  • English
  • French
Home Document
Subscriber Authentication Point
Free access article

Issue Radioprotection
Volume 44, Number 5, 2009
ECORAD 2008 - Radioecology and Environmental Radioactivity
Page(s) 665 - 670
DOI 10.1051/radiopro/20095122
Published online 06 June 2009

Radioprotection 2009, Vol. 44, n° 5, pages 665 à 670
DOI: 10.1051/radiopro/20095122

Accumulation of 137Cs in the European Sea Bass Dicentrarchus Labrax (L.) in a salinity gradient: Importance of uptake via gills, diet and ingested water

J. Hattink1, N. Celis2, G. De Boeck2, G.C. Krijger3 and R. Blust2

1  Waste Management Technology Ltd, A50, Winfrith, Dorset, DT2 8QW, UK
2  University of Antwerp, Department of Biology, Laboratory for Ecophysiology, Biochemistry, and Toxicology, Groenenborgerlaan 171, 2020 Antwerp, Belgium
3  Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands

jhattink@hotmail.com

Published online: 6 June 2009

Abstract
Radio-caesium is an important radionuclide released considering food and feed products. In aquatic environments caesium tends to accumulate in fish, both through its diet and its gills. This presentation discusses the caesium accumulation in fish living in estuaries. The aim of this work is to conclude on the importance of potential uptake routes: via the gills, diet or ingested with water. It is suggested that the magnitude of caesium accumulation in fish is related to waterborne potassium concentrations. Based on this theory, fish living in seawater should show a suppressed caesium accumulation compared to fish that stays in freshwater. However, to compensate for water losses, seawater fish are constantly drinking, adding an alternative route of entry for caesium. Apart from these two possible uptake routes of waterborne caesium, fish may take up caesium via their diet. Separate uptake-and-elimination studies were performed to measure the waterborne and dietary caesium uptake and elimination rate constants in fully acclimated Sea Bass at six different salinities (ranging from 1‰ to 35‰). Short-term uptake studies were performed as well to evaluate the effect of the waterborne potassium concentration. A toxicokinetic model evaluated several scenarios to conclude on the importance of each uptake route.



© EDP Sciences 2009


What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.