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RECORD NUMBER: 378 OF 1241

OLS Field Name OLS Field Data
Main Title Dioxin-like Toxic Potency in Forster's Tern Eggs from Green Bay, Lake Michigan, North America.
Author Tillitt, D. E. ; Kubiak, T. J. ; Ankley, G. T. ; Giesy., J. P. ;
CORP Author Environmental Research Lab.-Duluth, MN. ;National Fisheries Contaminant Research Center, Columbia, MO. ;Michigan State Univ., East Lansing. Dept. of Fisheries and Wildlife.
Publisher c1994
Year Published 1994
Report Number EPA/600/J-94/177;
Stock Number PB94-163565
Additional Subjects Birds ; Toxic tolerances ; Aquatic ecosystems ; Water pollution effects ; Halogen organic compounds ; Populations ; Halohydrocarbons ; Eggs ; Reproduction(Biology) ; Sites ; Lake Michigan ; Endangered species ; Toxicity ; Concentration(Composition) ; Signs and symptoms ; Bioassay ; Lake Poygan ; Biochemistry ; Comparison ; Reprint ; Green Bay(Wisconsin) ; Sterna forsteri ; Waterfowl ; Dioxin/tetrachloro-dibenzo-p ; Organic loading
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NTIS  PB94-163565 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/01/1994
Collation 8p
Abstract
The endangered Forster's tern (Sterna forsteri) population on Green Bay, Wisconsin has exhibited symptoms of embryotoxicity, congenital deformities, and poor hatching success. The putative causal agents are planar halogenated hydrocarbons (PHH). The objectives of the study were: (1) to evaluate the toxic potency of PHHs in extracts of Forster's tern eggs taken from Green Bay, Lake Michigan and a reference site, Lake Poygan, WI; and (2) to compare the toxic potencies of the egg extracts with the reproductive data available from the same water bird colonies. The relative toxic potency of the egg extracts was assessed with the H4IIE bioassay system to obtain 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TCDD-EQ). The bioassay results presented here concur with the biological effects and chemical analyses information from other studies on the same Forster's tern colonies. (Copyright (c) 1993 Pergamon Press Ltd.)