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Methylmercury: Second generation reproductive and behavioral effects of mallard ducks

Journal of Wildlife Management

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Abstract

Mallard ducks (Anas platyrhynchos) whose parents were fed a diet containing 0.5 ppm mercury (equal to about 0.1 ppm mercury in a natural diet) also were fed a diet containing 0.5 ppm mercury beginning at 9 days of age and continuing through their reproductive season. Mercury in the eggs of treated hens averaged 0.86 ppm. Hens fed 0.5 ppm mercury made less efficient use of feed and laid a greater percentage of eggs outside nestboxes compared with controls. Hens fed mercury also produced fewer 1-week-old ducklings than did controls. There were no significant differences between controls and ducklings from parents fed 0.5 ppm mercury in approach responses to tape-recorded maternal calls, in avoidance of a frightening stimulus, or in open-field behavior. Ducklings from parents fed 0.5 pprn mercury did not grow as fast as did control ducklings.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Methylmercury: Second generation reproductive and behavioral effects of mallard ducks
Series title:
Journal of Wildlife Management
Volume
40
Issue:
4
Year Published:
1976
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
710-715
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Management
First page:
710
Last page:
715