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Main Title Effects of Selenium on Mallard Duck Reproduction and Immune Function.
Author Whiteley, P. L. ; Yuill, T. M. ; Fairbrother, A. ;
CORP Author Corvallis Environmental Research Lab., OR. ;Wisconsin Univ.-Madison. School of Veterinary Medicine.
Publisher Nov 89
Year Published 1989
Report Number EPA/600/3-89/078;
Stock Number PB90-120692
Additional Subjects Toxicology ; Reproduction(Biology) ; Selenium ; Ducks ; Industrial wastes ; Tables(Data) ; Exposure ; Water pollution effects(Animals) ; Immune system ; Plaque assay ; Hemagglutination tests ; Delayed hypersensitivity ; Phagocytosis
Library Call Number Additional Info Location Last
NTIS  PB90-120692 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 63p
Abstract Selenium from irrigation drain water and coal-fired power stations is a significant environmental contaminant in some regions of the USA. The objectives were to examine whether selenium-exposed waterfowl had altered immune function, disease resistance, or reproduction. Pairs of adult mallards were exposed for 95-99 days on streams with sodium selenite-treated water at 10 and 30 ppb, or on untreated streams. Selenium biomagnified through the food chain to the ducks. Disease resistance was decreased in ducklings hatched on the streams and challenged with duck hepatitis virus 1 (DHV1) when 15-days old. Liver selenium concentrations for these ducklings on the 10 and 30 ppb streams was 3.6 and 7.6 ppm dry weight respectively. Mortality of ducklings purchased when 7-days old, exposed to selenium for 14 days, and challenged when 22-days old was not affected. However, their selenium exposure was lower (liver selenium 4.1 ppm dry weight for the 30 ppb stream). Five parameters of immune function were measured in adult ducks. Phagocytosis of killed Pasteurella multocida by blood heterophils and monocytes, and blood monocyte concentrations were higher in adult males following 84 days exposure to 30 ppb selenium. Their liver selenium concentrations were 11.1 ppm dry weight after 95-99 days exposure.
Supplementary Notes Prepared in cooperation with Wisconsin Univ.-Madison. School of Veterinary Medicine.
Category Codes 57Y; 57J; 68D
NTIS Prices PC A04/MF A01
Primary Description 600/02
Document Type NT
Cataloging Source NTIS/MT
Control Number 001116599
Origin NTIS
Type CAT