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Title: Chronic dietary toxicity of methylmercury in the zebra finch, Poephila guttata

Mercury (Hg) contamination of the environment through anthropogenic activity continues to be significant, and has resulted in the accumulation of elevated levels of Hg in invertebrates, fish and wildlife in certain Hg contaminated habitats. In addition, the availability of methylmercury (MeHg), a highly toxic and readily absorbable form of Hg, to the food chain is enhanced at low pH, an this has resulted in higher concentrations of Hg in various biota which inhabit environments sensitive to acid precipitation. The chronic dietary toxicity of MeHg has been investigated in a number of bird species including mallard ducks (Anas platyrhynchos, black ducks, pheasants, quail, and chickens. Except for a subchronic feeding study, the effects of MeHg on small passerines have not been studied. The present report describes the tissue accumulation and toxicity of MeHg in zebra finches (Poephila guttata) in response to chronic dietary exposure.
Authors:
Publication Date:
OSTI Identifier:
5295595
Resource Type:
Journal Article
Resource Relation:
Journal Name: Bull. Environ. Contam. Toxicol.; (United States); Journal Volume: 40:1
Research Org:
Environment Canada, Ottawa, Ontario
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; METHYLMERCURY; CHRONIC EXPOSURE; TOXICITY; BIRDS; CANADA; DIET; INTESTINES; KIDNEYS; LIVER; ANIMALS; BODY; DIGESTIVE SYSTEM; GASTROINTESTINAL TRACT; GLANDS; MERCURY COMPOUNDS; NORTH AMERICA; ORGANIC COMPOUNDS; ORGANIC MERCURY COMPOUNDS; ORGANS; VERTEBRATES; 560300* - Chemicals Metabolism & Toxicology