Document Detail


Health effects following chronic dosing with tungsten-iron and tungsten-polymer shot in adult game-farm mallards.
MedLine Citation:
PMID:  11504218     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Permanent approval of shot composed of tungsten-iron and tungsten-polymer for waterfowl hunting by the U.S. Fish and Wildlife Service was pending the results of the present study that examined the health and reproductive effects of the two shot types on mallards (Anas platyrhynchos) over a 150-day period. We collected data pertaining to the effects of tungsten-iron and tungsten-polymer shot on mortality, body weight, organ weight, tissue pathology, and shot erosion. Thirty-two bird groups (sexes equal) of adult mallards were dosed orally with eight #4 steel shot (control), eight #4 tungsten-iron shot, or eight #4 tungsten-polymer shot on days 0, 30, 60, 90, and 120 of a 150-day trial (26 January 1998 to 25 June 1998). An additional 12 mallards (sexes equal) were dosed orally with eight #4 lead shot (positive control) on day 0 of the study. All lead-dosed ducks died by day 25, whereas no ducks died in the other treatment groups. Significant liver hemosiderosis was present in all control and tungsten-iron-dosed males, in five of eight control and three of eight tungsten-iron-dosed females, and in one tungsten-polymer-dosed male examined. The rate of shot erosion was highest for tungsten-polymer shot (99%), followed by tungsten-iron (72%), and steel (55%) shot. Tungsten-iron or tungsten-polymer shot repeatedly administered to adult mallards did not have deleterious health effects during the 150-day trial based on mortality, body weights, organ weights, and histology of the liver and kidneys.
Authors:
R R Mitchell; S D Fitzgerald; R J Aulerich; R J Balander; D C Powell; R J Tempelman; R L Stickle; W Stevens; S J Bursian
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of wildlife diseases     Volume:  37     ISSN:  0090-3558     ISO Abbreviation:  J. Wildl. Dis.     Publication Date:  2001 Jul 
Date Detail:
Created Date:  2001-08-15     Completed Date:  2002-02-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0244160     Medline TA:  J Wildl Dis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  451-8     Citation Subset:  IM    
Affiliation:
Department of Animal Science, Michigan State University, East Lansing 48824, USA.
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MeSH Terms
Descriptor/Qualifier:
Alloys
Animals
Bird Diseases / chemically induced*,  mortality,  pathology
Bismuth / administration & dosage,  toxicity
Body Weight / drug effects
Caprolactam / analogs & derivatives*,  toxicity
Drug Administration Schedule
Ducks*
Female
Iron / administration & dosage,  toxicity*
Kidney / drug effects,  pathology
Lead Poisoning / mortality,  prevention & control,  veterinary
Liver / drug effects,  pathology
Male
Organ Size / drug effects
Poisoning / mortality,  pathology,  veterinary*
Polymers / toxicity
Random Allocation
Steel / toxicity
Tungsten / administration & dosage,  toxicity*
Chemical
Reg. No./Substance:
0/Alloys; 0/Polymers; 105-60-2/Caprolactam; 12597-69-2/Steel; 25038-54-4/nylon 6; 7439-89-6/Iron; 7440-33-7/Tungsten; 7440-69-9/Bismuth

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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