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Trace element concentrations in harvested auks from Newfoundland: toxicological risk of a traditional hunt

Citation

Bond, AL and Robertson, GJ and Lavers, JL and Hobson, KA and Ryan, PC, Trace element concentrations in harvested auks from Newfoundland: toxicological risk of a traditional hunt, Ecotoxicology and Environmental Safety, 115 pp. 1-6. ISSN 0147-6513 (2015) [Refereed Article]

Copyright Statement

Copyright 2015 Elsevier Inc.

DOI: doi:10.1016/j.ecoenv.2015.01.029

Abstract

Common (Uria aalge) and Thick-billed Murres (Uria lomvia) are apex predators in the North Atlantic Ocean, and are also subject to a traditional hunt in Newfoundland and Labrador during the winter months, along with small numbers of illegally harvested Razorbills (Alca torda). Because of their high trophic position, auks are at risk from high contaminant burdens that bioaccumulate and biomagnify, and could therefore pose a toxicological risk to human consumers. We analysed trace element concentrations from breast muscle of 51 auks collected off Newfoundland in the 20112012 hunting season. There were few differences in contaminant concentrations among species. In total, 14 (27%) exceeded Health Canada or international guidelines for arsenic, lead, or cadmium; none exceeded guidelines for mercury. Cadmium concentrations >0.05μg/g have persisted in Newfoundland murres for the last 25 years. We urge the integration of this consumptive harvest for high-trophic marine predators into periodic human health risk assessments.

Item Details

Item Type:Refereed Article
Keywords:trace elements, harvested species, seabird
Research Division:Environmental Sciences
Research Group:Environmental Science and Management
Research Field:Conservation and Biodiversity
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Marine Flora, Fauna and Biodiversity
Author:Lavers, JL (Dr Jennifer Lavers)
ID Code:98248
Year Published:2015
Web of Science® Times Cited:2
Deposited By:IMAS Research and Education Centre
Deposited On:2015-02-07
Last Modified:2017-10-31
Downloads:0

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