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

Pesticides Monitoring Journal

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Abstract

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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Mercury in eggs of aquatic birds, Lake St. Clair-1973
Series title:
Pesticides Monitoring Journal
Volume
10
Issue:
1
Year Published:
1976
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
7-9
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Pesticides Monitoring Journal
First page:
7
Last page:
9
Number of Pages:
3