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Exposure and effects of perfluoroalkyl substances in tree swallows nesting in Minnesota and Wisconsin, USA

Archives of Environmental Contamination and Toxicology

By:
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DOI: 10.1007/s00244-013-9934-0

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Abstract

The exposure and effects of perfluoroalkyl substances (PFASs) were studied at eight locations in Minnesota and Wisconsin between 2007 and 2011 using tree swallows (Tachycineta bicolor). Concentrations of PFASs were quantified as were reproductive success end points. The sample egg method was used wherein an egg sample is collected, and the hatching success of the remaining eggs in the nest is assessed. The association between PFAS exposure and reproductive success was assessed by site comparisons, logistic regression analysis, and multistate modeling, a technique not previously used in this context. There was a negative association between concentrations of perfluorooctane sulfonate (PFOS) in eggs and hatching success. The concentration at which effects became evident (150–200 ng/g wet weight) was far lower than effect levels found in laboratory feeding trials or egg-injection studies of other avian species. This discrepancy was likely because behavioral effects and other extrinsic factors are not accounted for in these laboratory studies and the possibility that tree swallows are unusually sensitive to PFASs. The results from multistate modeling and simple logistic regression analyses were nearly identical. Multistate modeling provides a better method to examine possible effects of additional covariates and assessment of models using Akaike information criteria analyses. There was a credible association between PFOS concentrations in plasma and eggs, so extrapolation between these two commonly sampled tissues can be performed.

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Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Exposure and effects of perfluoroalkyl substances in tree swallows nesting in Minnesota and Wisconsin, USA
Series title:
Archives of Environmental Contamination and Toxicology
DOI:
10.1007/s00244-013-9934-0
Year Published:
2013
Language:
English
Publisher:
Springer
Contributing office(s):
Upper Midwest Environmental Sciences Center
Description:
19 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Archives of Environmental Contamination and Toxicology
Number of Pages:
19
Country:
United States
State:
Minnesota;Wisconsin