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Spatial variability in selenium and mercury interactions in a key recreational fish species: Implications for human health and environmental monitoring

Citation

Jones, H and Butler, ECV and MacLeod, C, Spatial variability in selenium and mercury interactions in a key recreational fish species: Implications for human health and environmental monitoring, Marine Pollution Bulletin: The International Journal for Marine Environmentalists, Scientists, Engineers, Administrators, Politicians and Lawyers, 74, (1) pp. 231-236. ISSN 0025-326X (2013) [Refereed Article]

Copyright Statement

Copyright 2013 Elsevier Ltd.

DOI: doi:10.1016/j.marpolbul.2013.06.052

Abstract

Selenium’s (Se) protective effects against mercury (Hg) toxicity have been demonstrated; however, this is seldom considered in health assessments, where dietary exposure is still evaluated by Hg concentration alone. Se:Hg ratios and selenium health benefit values (Se HBVs) offer a more comprehensive seafood safety model. Here we describe total mercury (THg), methylmercury (MeHg) and Se concentrations in fish from a Hg-polluted estuary. Spatial variation in THg, MeHg and Se was evident, though all regions maintained Se:Hg ratio values >1. Se HBV varied between regions and in one region mean negative values (5.17) were evident. This study provides the first evidence that quoting a single all-encompassing Se HBV is not appropriate when species demonstrate strong site fidelity. It highlights the need for research into Se–Hg relationships in environments with established Hg pollution and reinforces the assertion that Se concentration be considered in assessments of human health risk to Hg exposure.

Item Details

Item Type:Refereed Article
Keywords:Platycephalus bassensis,Derwent Estuary,Seafood safety,Contaminant assessmen, Se health benefit value (Se HBV)t
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and Estuarine Ecology (incl. Marine Ichthyology)
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management of Coastal and Estuarine Environments
Author:Jones, H (Mr Hugh Jones)
Author:MacLeod, C (Associate Professor Catriona MacLeod)
ID Code:88470
Year Published:2013
Web of Science® Times Cited:2
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2014-02-04
Last Modified:2014-05-14
Downloads:0

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