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Comparative toxicity of lead shot in black ducks (Anas rubripes) and mallards (Anas platyrhynchos)

Journal of Wildlife Diseases

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Abstract

In winter, pen-reared and wild black ducks (Anas rubripes), and game farm and wild mallards (Anas platyrhynchos), maintained on pelleted feed, were sham-dosed or given one number 4 lead shot. After 14 days, dosed birds were redosed with two or four additional lead shot. This dosing regimen also was repeated in summer using pen-reared black ducks and game farm mallards. Based upon mortality, overt intoxication, weight change, delta-aminolevulinic acid dehydratase activity and protoporphyrin concentration, black ducks and mallards were found to be equally tolerant to lead shot. However, captive wild ducks were more sensitive than their domesticated counterparts, as evidenced by greater mortality and weight loss following lead shot administration. This difference may be related to stress associated with captivity and unnatural diet.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Comparative toxicity of lead shot in black ducks (Anas rubripes) and mallards (Anas platyrhynchos)
Series title:
Journal of Wildlife Diseases
Volume
25
Issue:
2
Year Published:
1989
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
175-183
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Diseases
First page:
175
Last page:
183
Number of Pages:
9