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Mercury in eggs of aquatic birds, Lake St. Clair-1973

June 16, 2010

Eggs from four species of aquatic birds inhabiting waterways of the Lake St. Clair region were collected in 1973 and analyzed for mercury. Species analyzed were mallard ducks (Anas platyrhynchos), common terns (Sterna hirundo), black-crowned night herons (Nycticorax nycticorax), and great egrets (Casmerodius albus). Mallard eggs contained relatively low residue levels, less than 0.05-0.26 ppm, and common tern eggs contained the highest residues, ranging up to 1.31 ppm. Mercury levels in the eggs were appreciably lower than those in the same species in 1970. The declines are attributed to the 1970 restrictions placed on industrial discharges of mercury into the St. Clair and Detroit Rivers.

Citation Information

Publication Year 1976
Title Mercury in eggs of aquatic birds, Lake St. Clair-1973
Authors R.C. Stendell, H. M. Ohlendorf, E. E. Klaas, J. B. Elder
Publication Type Article
Publication Subtype Journal Article
Series Title Pesticides Monitoring Journal
Index ID 5221362
Record Source USGS Publications Warehouse
USGS Organization Patuxent Wildlife Research Center