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Leonard J. S. Tsuji - One of the best experts on this subject based on the ideXlab platform.

  • Lead Pellet ingestion and liver Lead concentrations in upland game birds from southern ontario canada
    Archives of Environmental Contamination and Toxicology, 2008
    Co-Authors: N. Kreager, Bruce C. Wainman, R. K. Jayasinghe, Leonard J. S. Tsuji
    Abstract:

    One-hundred twenty-three gizzards from upland game birds (chukar, Alectoris chukar; and common pheasant, Phasianus colchicus) harvested by hunters in southern Ontario, Canada, were examined for Lead Pellet ingestion by manual examination of gizzard contents and by radiography. Lead Pellets were found to be ingested by chukars (6/76; 8%) and the common pheasant (16/47; 34%). Further, 13% (17/129) of the bird (wild turkey, Meleagris gallopavo; Hungarian partridge, Perdix perdix; chukar; and common pheasant) livers analyzed had elevated Lead concentrations (≥6 μg/g wet weight [ww]). Liver-Lead concentrations above Health Canada’s guideline for human consumption of fish protein (<0.5 μg/g ww) were found in 40% (51/129) of livers analyzed. Data indicate that the ingestion of Lead Pellets in upland game birds and the potential consumption of Lead-contaminated meat by humans are concerns related to the continued use of Lead shotshell for hunting.

  • Lead Pellet ingestion and liver-Lead concentrations in upland game birds from southern Ontario, Canada.
    Archives of Environmental Contamination and Toxicology, 2007
    Co-Authors: N. Kreager, Bruce C. Wainman, R. K. Jayasinghe, Leonard J. S. Tsuji
    Abstract:

    One-hundred twenty-three gizzards from upland game birds (chukar, Alectoris chukar; and common pheasant, Phasianus colchicus) harvested by hunters in southern Ontario, Canada, were examined for Lead Pellet ingestion by manual examination of gizzard contents and by radiography. Lead Pellets were found to be ingested by chukars (6/76; 8%) and the common pheasant (16/47; 34%). Further, 13% (17/129) of the bird (wild turkey, Meleagris gallopavo; Hungarian partridge, Perdix perdix; chukar; and common pheasant) livers analyzed had elevated Lead concentrations (≥6 μg/g wet weight [ww]). Liver-Lead concentrations above Health Canada’s guideline for human consumption of fish protein (

  • Lead Pellet Ingestion in First Nation Cree of the Western James Bay Region of Northern Ontario, Canada: Implications for a Nontoxic Shot Alternative
    Ecosystem Health, 1997
    Co-Authors: Leonard J. S. Tsuji, Evert Nieboer
    Abstract:

    Subsistence hunting for Cree of the western James Bay region of northern Ontario, Canada, is a way of life. In this study, it is shown that ∼15% of the radiographic charts examined had evidence of Pellets contained in the gastrointestinal system, intraluminally, and/or in the appendix. It is assumed that the consumption of wildgame with Lead shot embedded in the tissue was the source of the Pellets. Because the presence of Lead shot in the human gastrointestinal tract appears to increase the body burden of Lead and considerable evidence is available on the occurrence of Lead poisoning in waterfowl due to the ingestion of Lead Pellets,it is suggested that the use of Lead shot should be discontinued nationwide in Canada. Although bismuth/tin shot has been growing in appeal because of several recent waterfowl studies demonstrating its nontoxic nature, caution is advised because of the uncertainty about the toxicity of bismuth in humans, especially when consumed as whole Pellets or fragments in wildmeats. We maintain that the nontoxic alternative of choice at this time is steel shot.

N. Kreager - One of the best experts on this subject based on the ideXlab platform.

  • Lead Pellet ingestion and liver Lead concentrations in upland game birds from southern ontario canada
    Archives of Environmental Contamination and Toxicology, 2008
    Co-Authors: N. Kreager, Bruce C. Wainman, R. K. Jayasinghe, Leonard J. S. Tsuji
    Abstract:

    One-hundred twenty-three gizzards from upland game birds (chukar, Alectoris chukar; and common pheasant, Phasianus colchicus) harvested by hunters in southern Ontario, Canada, were examined for Lead Pellet ingestion by manual examination of gizzard contents and by radiography. Lead Pellets were found to be ingested by chukars (6/76; 8%) and the common pheasant (16/47; 34%). Further, 13% (17/129) of the bird (wild turkey, Meleagris gallopavo; Hungarian partridge, Perdix perdix; chukar; and common pheasant) livers analyzed had elevated Lead concentrations (≥6 μg/g wet weight [ww]). Liver-Lead concentrations above Health Canada’s guideline for human consumption of fish protein (<0.5 μg/g ww) were found in 40% (51/129) of livers analyzed. Data indicate that the ingestion of Lead Pellets in upland game birds and the potential consumption of Lead-contaminated meat by humans are concerns related to the continued use of Lead shotshell for hunting.

  • Lead Pellet ingestion and liver-Lead concentrations in upland game birds from southern Ontario, Canada.
    Archives of Environmental Contamination and Toxicology, 2007
    Co-Authors: N. Kreager, Bruce C. Wainman, R. K. Jayasinghe, Leonard J. S. Tsuji
    Abstract:

    One-hundred twenty-three gizzards from upland game birds (chukar, Alectoris chukar; and common pheasant, Phasianus colchicus) harvested by hunters in southern Ontario, Canada, were examined for Lead Pellet ingestion by manual examination of gizzard contents and by radiography. Lead Pellets were found to be ingested by chukars (6/76; 8%) and the common pheasant (16/47; 34%). Further, 13% (17/129) of the bird (wild turkey, Meleagris gallopavo; Hungarian partridge, Perdix perdix; chukar; and common pheasant) livers analyzed had elevated Lead concentrations (≥6 μg/g wet weight [ww]). Liver-Lead concentrations above Health Canada’s guideline for human consumption of fish protein (

R. K. Jayasinghe - One of the best experts on this subject based on the ideXlab platform.

  • Lead Pellet ingestion and liver Lead concentrations in upland game birds from southern ontario canada
    Archives of Environmental Contamination and Toxicology, 2008
    Co-Authors: N. Kreager, Bruce C. Wainman, R. K. Jayasinghe, Leonard J. S. Tsuji
    Abstract:

    One-hundred twenty-three gizzards from upland game birds (chukar, Alectoris chukar; and common pheasant, Phasianus colchicus) harvested by hunters in southern Ontario, Canada, were examined for Lead Pellet ingestion by manual examination of gizzard contents and by radiography. Lead Pellets were found to be ingested by chukars (6/76; 8%) and the common pheasant (16/47; 34%). Further, 13% (17/129) of the bird (wild turkey, Meleagris gallopavo; Hungarian partridge, Perdix perdix; chukar; and common pheasant) livers analyzed had elevated Lead concentrations (≥6 μg/g wet weight [ww]). Liver-Lead concentrations above Health Canada’s guideline for human consumption of fish protein (<0.5 μg/g ww) were found in 40% (51/129) of livers analyzed. Data indicate that the ingestion of Lead Pellets in upland game birds and the potential consumption of Lead-contaminated meat by humans are concerns related to the continued use of Lead shotshell for hunting.

  • Lead Pellet ingestion and liver-Lead concentrations in upland game birds from southern Ontario, Canada.
    Archives of Environmental Contamination and Toxicology, 2007
    Co-Authors: N. Kreager, Bruce C. Wainman, R. K. Jayasinghe, Leonard J. S. Tsuji
    Abstract:

    One-hundred twenty-three gizzards from upland game birds (chukar, Alectoris chukar; and common pheasant, Phasianus colchicus) harvested by hunters in southern Ontario, Canada, were examined for Lead Pellet ingestion by manual examination of gizzard contents and by radiography. Lead Pellets were found to be ingested by chukars (6/76; 8%) and the common pheasant (16/47; 34%). Further, 13% (17/129) of the bird (wild turkey, Meleagris gallopavo; Hungarian partridge, Perdix perdix; chukar; and common pheasant) livers analyzed had elevated Lead concentrations (≥6 μg/g wet weight [ww]). Liver-Lead concentrations above Health Canada’s guideline for human consumption of fish protein (

Bruce C. Wainman - One of the best experts on this subject based on the ideXlab platform.

  • Lead Pellet ingestion and liver Lead concentrations in upland game birds from southern ontario canada
    Archives of Environmental Contamination and Toxicology, 2008
    Co-Authors: N. Kreager, Bruce C. Wainman, R. K. Jayasinghe, Leonard J. S. Tsuji
    Abstract:

    One-hundred twenty-three gizzards from upland game birds (chukar, Alectoris chukar; and common pheasant, Phasianus colchicus) harvested by hunters in southern Ontario, Canada, were examined for Lead Pellet ingestion by manual examination of gizzard contents and by radiography. Lead Pellets were found to be ingested by chukars (6/76; 8%) and the common pheasant (16/47; 34%). Further, 13% (17/129) of the bird (wild turkey, Meleagris gallopavo; Hungarian partridge, Perdix perdix; chukar; and common pheasant) livers analyzed had elevated Lead concentrations (≥6 μg/g wet weight [ww]). Liver-Lead concentrations above Health Canada’s guideline for human consumption of fish protein (<0.5 μg/g ww) were found in 40% (51/129) of livers analyzed. Data indicate that the ingestion of Lead Pellets in upland game birds and the potential consumption of Lead-contaminated meat by humans are concerns related to the continued use of Lead shotshell for hunting.

  • Lead Pellet ingestion and liver-Lead concentrations in upland game birds from southern Ontario, Canada.
    Archives of Environmental Contamination and Toxicology, 2007
    Co-Authors: N. Kreager, Bruce C. Wainman, R. K. Jayasinghe, Leonard J. S. Tsuji
    Abstract:

    One-hundred twenty-three gizzards from upland game birds (chukar, Alectoris chukar; and common pheasant, Phasianus colchicus) harvested by hunters in southern Ontario, Canada, were examined for Lead Pellet ingestion by manual examination of gizzard contents and by radiography. Lead Pellets were found to be ingested by chukars (6/76; 8%) and the common pheasant (16/47; 34%). Further, 13% (17/129) of the bird (wild turkey, Meleagris gallopavo; Hungarian partridge, Perdix perdix; chukar; and common pheasant) livers analyzed had elevated Lead concentrations (≥6 μg/g wet weight [ww]). Liver-Lead concentrations above Health Canada’s guideline for human consumption of fish protein (

A. J. Bermudez - One of the best experts on this subject based on the ideXlab platform.

  • experimental Lead Pellet ingestion in mourning doves zenaida macroura
    American Midland Naturalist, 2007
    Co-Authors: John H. Schulz, Joshua J. Millspaugh, Xiaoming Gao, A. J. Bermudez
    Abstract:

    ABSTRACT Because the relationship between Lead Pellet availability and ingestion by mourning doves (Zenaida macroura) remains uncertain, we conducted an experiment to determine if doves held in captivity freely ingest Lead shotgun Pellets, investigate the relationship between Pellet density and ingestion and monitor physiological impacts of doves ingesting Pellets. We conducted two trials of the experiment with <60 doves per trial. We randomly assigned 10 doves to one of six groups per trial; 10, 25, 50, 100, 200 Pellets mixed with food and a control group with no Pellets. We monitored ingestion by examining x-rays of doves 1-d post-treatment and monitored the effects of Lead ingestion by measuring heterophil∶lymphocyte (H∶L) ratios, packed-cell volume (PCV), blood Lead, liver Lead and kidney Lead. Pooled data from both trials showed 6 of 117 (5.1%) doves ingested Lead Pellets. Two mourning doves ingested multiple Lead Pellets in each of the treatments containing a mixture of 25, 100 and 200 Lead Pellets ...

  • Experimental Lead Pellet Ingestion In Mourning Doves (Zenaida macroura)
    The American Midland Naturalist, 2007
    Co-Authors: John H. Schulz, Joshua J. Millspaugh, Xiaoming Gao, A. J. Bermudez
    Abstract:

    ABSTRACT Because the relationship between Lead Pellet availability and ingestion by mourning doves (Zenaida macroura) remains uncertain, we conducted an experiment to determine if doves held in captivity freely ingest Lead shotgun Pellets, investigate the relationship between Pellet density and ingestion and monitor physiological impacts of doves ingesting Pellets. We conducted two trials of the experiment with

  • Acute Lead Toxicosis in Mourning Doves
    Journal of Wildlife Management, 2006
    Co-Authors: John H. Schulz, Joshua J. Millspaugh, A. J. Bermudez, Xiaoming Gao, Thomas W. Bonnot, Lisa G. Britt, Mark Paine
    Abstract:

    Previous research has suggested that free-ranging mourning doves (Zenaida macroura) may ingest spent Lead Pellets, succumb to Lead toxicosis, and die in a relatively short time (i.e., an acute Lead toxicosis hypothesis). We tested this hypothesis by administering 157 captive mourning doves 2–24 Lead Pellets, monitoring Pellet retention and short-term survival, and measuring related physiological characteristics. During the 19- to 21-day posttreatment period, 104 doves that received Lead Pellets died (deceased doves) and 53 survived (survivors); all 22 birds in a control group survived. Within 24-hr of treatment, blood Lead levels increased almost twice as fast for deceased doves compared to survivors (F1,208 = 55.49; P < 0.001). During the first week, heterophil:lymphocyte (H:L) ratios increased twice as fast for deceased doves than with survivors (F1,198 = 23.14, P < 0.001). Posttreatment survival differed (χ2 = 37.4, P < 0.001) among the 5 groups of doves that retained different numbers of Pellets, and survival ranged from 0.57 (95% CI: 0.44–0.74) for doves that retained ≤2 Lead Pellets 2 days posttreatment compared to 0.08 (95% CI: 0.022–0.31) for those doves that retained 13–19 Lead Pellets on 2 days posttreatment; significant differences existed among the 5 groups. After controlling for dove pretreatment body mass, each additional Lead Pellet increased the hazard of death by 18.0% (95% CI: 1.132–1.230, P < 0.001) and 25.7% (95% CI: 1.175–1.345, P < 0.001) for males and females, respectively. For each 1-g increase in pretreatment body mass, the hazard of death decreased 2.5% (P = 0.04) for males and 3.8% (P = 0.02) for females. Deceased doves had the highest Lead levels in liver (49.20 ± 3.23 ppm) and kidney (258.16 ± 21.85 ppm) tissues, whereas controls showed the lowest levels (liver, 0.08 ± 0.041 ppm; kidney, 0.17 ± 0.10 ppm). For doves dosed with Pellets, we observed simultaneous increases in blood Lead levels and H:L ratios, whereas packed-cell volume (PCV) values declined. Our results support an acute Lead toxicosis hypothesis. Although further research is necessary to investigate the magnitude of Lead shot ingestion and toxicosis in mourning doves, we recommend that management agencies initiate development of a long-term strategic plan aimed at implementing a nontoxic shot regulation for mourning dove hunting.