Environmental Monitoring and Assessment

, Volume 172, Issue 1, pp 91–112

Dietary exposure of three passerine species to PCDD/DFs from the Chippewa, Tittabawassee, and Saginaw River floodplains, Midland, Michigan, USA

  • Timothy B. Fredricks
  • John P. Giesy
  • Sarah J. Coefield
  • Rita M. Seston
  • Melissa M. Haswell
  • Dustin L. Tazelaar
  • Patrick W. Bradley
  • Jeremy N. Moore
  • Shaun A. Roark
  • Matthew J. Zwiernik
Open Access
Article

DOI: 10.1007/s10661-010-1319-5

Cite this article as:
Fredricks, T.B., Giesy, J.P., Coefield, S.J. et al. Environ Monit Assess (2011) 172: 91. doi:10.1007/s10661-010-1319-5

Abstract

Dietary exposure of house wrens (Troglodytes aedon), tree swallows (Tachycineta bicolor), and eastern bluebirds (Sialia sialis) to polychlorinated dibenzofurans (PCDFs) and polychlorinated dibenzo-p-dioxins (PCDDs) near Midland, Michigan (USA) was evaluated based on site-specific data, including concentrations of residues in bolus samples and individual invertebrate orders and dietary compositions by study species. Site-specific dietary compositions for the three species were similar to those reported in the literature, but differed in their relative proportions of some dietary items. Oligocheata (non-depurated) and Brachycera (Diptera) contained the greatest average concentrations of ΣPCDD/DFs of the major site-specific dietary items collected via food web-based sampling. Average ingestion values of ΣPCDD/DFs from site-specific bolus-based and food web-based dietary concentrations for nestlings at study areas (SAs) were 6- to 20-fold and 2- to 9-fold greater than at proximally located reference areas (RAs), respectively. Average ingestion values of total 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TEQWHO − Avian) from site-specific bolus-based and food web-based dietary concentrations for nestlings at SAs were 31- to 121-fold and 9- to 64-fold greater than at proximally located RAs, respectively. Estimates of ΣPCDD/DFs and TEQWHO − Avian tissue concentrations based on nestling dietary exposures were greater than those measured. Plausible explanations include nestling metabolism of 2,3,7,8-tetrachlorodibenzofuran and assimilation rates of less than the 70% assumed to occur over the nestling growth period. Profiles of the relative concentrations of individual PCDD/DF congeners in samples of invertebrates and bolus at SAs on the Tittabawassee River downstream of the source of contamination were dominated by 1,2,3,4,6,7,8,9-octachlorodibenzo-p-dioxin (22% to 44%) and 2,3,7,8-tetrachlorodibenzofuran (18% to 50%).

Keywords

Furans Dioxins Bolus Birds TEQs Invertebrates 
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Supplementary material

10661_2010_1319_MOESM1_ESM.doc (182 kb)
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Copyright information

© The Author(s) 2010

Authors and Affiliations

  • Timothy B. Fredricks
    • 1
    • 2
  • John P. Giesy
    • 1
    • 3
    • 4
    • 5
    • 6
  • Sarah J. Coefield
    • 1
  • Rita M. Seston
    • 1
  • Melissa M. Haswell
    • 7
  • Dustin L. Tazelaar
    • 8
  • Patrick W. Bradley
    • 8
  • Jeremy N. Moore
    • 8
  • Shaun A. Roark
    • 9
  • Matthew J. Zwiernik
    • 8
  1. 1.Department of ZoologyMichigan State UniversityEast LansingUSA
  2. 2.Bayer CropScience, EcotoxicologyStilwellUSA
  3. 3.Department of Veterinary Biomedical Sciences and Toxicology CentreUniversity of SaskatchewanSaskatoonCanada
  4. 4.Department of Biology and ChemistryCity University of Hong KongKowloonChina
  5. 5.College of EnvironmentNanjing University of TechnologyNanjingPeople’s Republic of China
  6. 6.Key Laboratory of Marine Environmental Science, College of Oceanography and Environmental ScienceXiamen UniversityXiamenPeople’s Republic of China
  7. 7.Science DepartmentDavenport UniversityMidlandUSA
  8. 8.Department of Animal ScienceMichigan State UniversityEast LansingUSA
  9. 9.ENTRIX, Inc.OkemosUSA

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