To what extent are hepatic concentrations of heavy metals in Anguilla anguilla at a site in a contaminated estuary related to body size and age and reflected in the metallothionein concentrations?

Bird, D. J., Rotchell, J., Hesp, S., Newton, L. C., Hall, N. and Potter, I. C. (2008) To what extent are hepatic concentrations of heavy metals in Anguilla anguilla at a site in a contaminated estuary related to body size and age and reflected in the metallothionein concentrations? Environmental Pollution, 151 (3). pp. 641-651. ISSN 0269-7491

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Publisher's URL: http://dx.doi.org/10.1016/j.envpol.2007.03.018

Abstract

We explored how hepatic [metal]s in Anguilla anguilla at a contaminated estuarine site are influenced by body size, age and season, and the extent that [Cu], [Cd] and [Zn]s are reflected in [metallothionein (MT)]s. Although each [metal] and [MT] increased significantly with length, weight and age, those biotic variables explained <10% of the variation in each [metal] and only 11–16% for [MT]. Seasonal changes in [Cu] and [Cd] were paralleled by [MT]. The variation in [MT] explained by Cu (42%) was greater than by Zn (16%) and Cd (13%), and seasonally lay between 43 and 69% for those metals collectively. Thus, hepatic [MT] in eels is closely correlated with hepatic [heavy metal]s. However, the great variability among [MT]s for eels of similar sizes and ages, which reflects marked variability in hepatic [heavy metal]s, means that this variable reflects imprecisely the contamination level at a particular site. Hepatic [Cu], [Cd], [Zn] and [MT] in eels varies greatly with size, age and season.

Item Type:Article
Additional Information:Equal co-author. This work was funded by the Leverhulme Trust and focuses on metal contamination of European eels and explains how contamination varies with age and size of eel and with season. This is significant in terms of monitoring estuarine health and represents continuing collaboration with internationally renowned external colleagues.
Uncontrolled Keywords:eel, metal concentration, metallothionein, body size, season
Faculty/Department:Faculty of Health and Applied Sciences > Department of Biological, Biomedical and Analytical Sciences
ID Code:7101
Deposited By: H. Hammond
Deposited On:21 Jul 2010 08:23
Last Modified:12 Aug 2013 07:59

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