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Effects of chronic ingestion of South Louisiana crude oil on mallard ducklings

January 1, 1978

South Louisiana crude oil was fed to duckling mallards (Anas platyrhynchos) in concentrations of 0.025, 0.25, 2.5, and 5.0% of the diet from hatching to 8 weeks of age to assess the effects of chronic oil ingestion during early development. Growth was depressed in birds receiving a diet containing 5% oil but there was no oil-related mortality. Diets containing 0.25, 2.5, and 5.0% oil impaired avoidance behavior of 6-day-old mallard ducklings when compared with controls or ducklings fed 0.025% oil, but had no effect on open-field behavior of 7-day-old ducklings. Liver hypertrophy and splenic atrophy were gross evidence of the pathological effects of oil in birds on the 2.5 and 5.0% oil diets. Biochemical lesions that occurred included elevation of plasma alanine aminotransferase and ornithine carbamyl transferase activity. Hepatocyte hypertrophy and bile duct proliferation in the liver were noted in birds fed the 2.5 and 5.0% oil diets and tubular inflammation and degeneration in the kidney were noted in birds fed the 5.0% oil diet.

Publication Year 1978
Title Effects of chronic ingestion of South Louisiana crude oil on mallard ducklings
DOI 10.1016/0013-9351(78)90046-4
Authors Robert C. Szaro, M. P. Dieter, G. H. Heinz, J. F. Ferrell
Publication Type Article
Publication Subtype Journal Article
Series Title Environmental Research
Index ID 5221419
Record Source USGS Publications Warehouse
USGS Organization Patuxent Wildlife Research Center