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Contaminant concentrations and biomarker response in great blue heron eggs from 10 colonies on the upper Mississippi River, USA

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Contaminant concentrations and biomarker response in great blue heron eggs from 10 colonies on the upper Mississippi River, USA; 1997; Article; Journal; Environmental Toxicology and Chemistry; Custer, T. W.; Hines, R. K.; Melancon, M. J.; Hoffman, D. J.; Wickliffe, J. K.; Bickham, J. W.; Martin, J. W.; Henshel, D. S.

Summary

In 1993, great blue heron (Ardea herodias; GBH) eggs were collected from 10 colonies on the upper Mississippi River (UMR). They were then artificially incubated until pipping and analyzed for mercury, selenium, and organochlorines. Livers of embryos were analyzed for hepatic microsomal ethoxyresorufin-O-dealkylase (EROD) activity and four measures of oxidative stress. Brains were measured for asymmetry and blood was measured for the coefficient of variation of DNA (DNA CV). Organochlorine concentrations were generally low (geometric mean DDE = 1.3 I?g/g wet weight; polychlorinated biphenyl [PCB] = 3.0 I?g/g; 2,3,7,8-tetrachlorodibenzo-p-dioxin [TCDD] = 11.5 pg/g). Eggshell thickness was negatively correlated with DDE concentrations. [...]

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  • Upper Midwest Environmental Sciences Center (UMESC)

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Type Scheme Key
local-index unknown 1003008
local-pk unknown 1003008
series unknown Environmental Toxicology and Chemistry

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journalEnvironmental Toxicology and Chemistry
parts
typevolume
value16
typeissue
value2
languageEnglish
citationTypeArticle

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