Dietary- and tissue-based exposure of belted kingfisher to PCDFs and PCDDs in the Tittabawassee River floodplain, Midland, MI, USA

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

6 Scopus Citations
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Author(s)

  • Rita M. Seston
  • John P. Giesy
  • Timothy B. Fredricks
  • Dustin L. Tazelaar
  • Sarah J. Coefield
  • And 5 others
  • Patrick W. Bradley
  • Shaun A. Roark
  • John L. Newsted
  • Denise P. Kay
  • Matthew J. Zwiernik

Detail(s)

Original languageEnglish
Pages (from-to)1158-1168
Journal / PublicationEnvironmental Toxicology and Chemistry
Volume31
Issue number5
Publication statusPublished - May 2012

Abstract

Concentrations of polychlorinated dibenzofurans (PCDFs) and other dioxin-like compounds in soils and sediments of the Tittabawassee River and associated floodplains downstream of Midland, Michigan, USA, are greater than upstream sites. As a result of these concentrations, which are some of the greatest ever reported, a site-specific exposure assessment of belted kingfisher breeding in the assessment area was conducted. To reduce the uncertainty associated with predicting exposure from abiotic matrices, concentrations of residues were quantified in site-specific prey items and in eggs and nestlings of belted kingfisher. Dietary exposure, expressed as the potential average daily dose, based on site-specific concentrations of PCDFs, polychlorinated dibenzo-p-dioxins (PCDDs), and 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TEQ WHO-Avian) in prey items was consistently greater along the Tittabawassee River than in associated reference areas and further downstream sites in the Saginaw River. Concentrations of PCDD/DFs in eggs and nestlings of belted kingfisher varied among sampling areas, being greater in both eggs and nestlings nesting along the Tittabawassee River compared to those of belted kingfisher from upstream reference areas. Geometric mean concentrations of PCDD/DFs were 130 and 200ng/kg wet weight in eggs and nestlings of belted kingfisher, respectively. These concentrations are the equivalent of 84 and 95ng TEQ WHO-Avian/kg. Site-specific biomagnification factors for select PCDD/DF congeners ranged from

Research Area(s)

  • Avian diet, Bioaccumulation, Bird, Dioxins and furans, Egg, Feeding, Monitoring food, PCB

Citation Format(s)

Dietary- and tissue-based exposure of belted kingfisher to PCDFs and PCDDs in the Tittabawassee River floodplain, Midland, MI, USA. / Seston, Rita M.; Giesy, John P.; Fredricks, Timothy B. et al.
In: Environmental Toxicology and Chemistry, Vol. 31, No. 5, 05.2012, p. 1158-1168.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review