Nondestructive Scat Sampling in Assessment of Mink (Mustela vison) Exposed to Polychlorinated Dibenzofurans (PCDFs)

Autor: Matthew J. Zwiernik, Denise P. Kay, Lesa L. Aylward, Jeremy N. Moore, Lisa L. Williams, John P. Giesy, Steve Bursian, Jong Seong Khim
Rok vydání: 2008
Předmět:
Zdroj: Archives of Environmental Contamination and Toxicology. 55:529-537
ISSN: 1432-0703
0090-4341
Popis: The mink (Mustela vison) is often utilized as a sentinel species for ecological assessments at sites where contaminants of concern include dioxins and dioxin-like compounds. Utilizing mink scat as a nondestructive tool to determine internal exposure to dioxin-like compounds may allow for rapid, accurate estimates of exposure without the need to capture mink or their prey. To determine the relationships between concentrations of polychlorinated dibenzofurans (PCDFs) in tissues (liver and adipose) and those in scat, mink were fed PCDFs in scat during a controlled laboratory study for 180 days. Mink were fed a control diet, diets with three doses of 2,3,4,7,8-pentachlorodibenzofuran (2,3,4,7,8-PeCDF) or 2,3,7,8-tetrachlorodibenzofuran (2,3,7,8-TCDF), and a diet with an environmentally relevant mixture of the two congeners. Concentrations of PCDFs in liver and adipose were measured after 0, 90, and 180 days of exposure. Concentrations of the two PCDF congeners in mink scat were determined after 2, 23, 45, 90, and 180 days of exposure. Concentrations of both PCDF congeners in scat were significantly correlated with those in liver and adipose tissue (r 2 = 0.94−0.97, p
Databáze: OpenAIRE