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Discoveries, trends, and implications of chemicals in the Great Lakes

John Newsted discusses impact of chemicals on mink in the Great Lakes at IAGLR Annual Conference

John Newsted, PhD of NRT, an OBG Company, recently took part in the International Association for Great Lakes Research (IAGLR) 60th Annual Conference on Great Lakes Research, From Cities to Farms: Shaping Great Lakes Ecosystems, on May 15-19, 2017 in Detroit, Michigan. John presented during the conference's session on discoveries, trends, and implications of chemicals in the Great Lakes, specifically discussing the impact of brominated flame retardants (BFRs) found in a variety of consumer products on mink.

View our presentation:

Effects of bis(2,4,6-tribromophenoxy) ethane (BTBPE) in Mink (Mustela vison) [Presentation]
John Newsted, PhD

Abstract: Brominated flame retardants (BFRs) found in a variety of consumer products have also been observed in the environment, wildlife, and humans and has prompted concern for these emerging contaminants. Older BFRs have been removed from production and use of non-PBDE BFR alternatives, such as 1,2-bis(2,4,6-tribromophenoxy) ethane (BTBPE), have increased; however, little is known about the potential risk that this may pose to wildlife. 

To address this data gap, a dietary reproduction study with adult female mink exposed to 0, 0.014, 0.13, or 2.3 mg BTBPE/kg feed was conducted. This presentation discusses the results of this study, along with an evaluation of the uncertainties associated with this risk evaluation.

About John Newsted, PhD: John has experience evaluating the fate and effect of persistent, chlorinated chemicals, including polychlorinated biphenyls, dioxins, organochlorine pesticides, polycyclic aromatic hydrocarbons, and metals, such as mercury and lead. He has conducted research in understanding the mechanism of toxicity for these chemical classes, as well as developed biomarkers of effect and exposure in aquatic and terrestrial organisms. John has also focused on emerging contaminants with an emphasis on fluorochemicals and specifically, perfluorooctane sulfonated (PFOS) and perfluorooctanoic acid (PFOA). His expertise spans design, management, and interpretation of toxicological studies with laboratory species; field investigations; and ecological risk assessments in aquatic and terrestrial systems.

John Newsted, PhD
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