Abstract
Concentrations of total mercury (T-Hg) were measured in eel and roach from five selected rivers in East Anglia, U.K, to determine Hg bioaccumulation in fish throughout the region. Levels of T-Hg in sediment and river water were also analysed to assess their potential as pathways to the fish. Accumulated Hg levels in River Yare eel and roach continue to exhibit a strong positive relationship with surface sediment Hg levels, which are declining with time. Mercury in muscle from all sampled fish were below the limit set by the EU Directive (93/351/EEC). Analysis of muscle:liver (M:L) ratios confirm that eel from all sites are in equilibrium with their environment. Various statistical methods (single factor analysis of variance, Spearman's correlation coefficients) were performed on the experimentally derived data on mercury concentrations in fish flesh. Significant correlations were noted for accumulated Hg in fish flesh with length and weight in eel, and length, weight and age in roach.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
