Gary H Heinz

Summary

Affiliation: U.S. Geological Survey
Country: USA

Publications

  1. doi request reprint Reproduction in mallards exposed to dietary concentrations of methylmercury
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, MD, 20705, USA
    Ecotoxicology 19:977-82. 2010
  2. doi request reprint Intraperitoneal injections as a possible means of generating varied levels of methylmercury in the eggs of birds in field studies
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 29:1079-83. 2010
  3. doi request reprint A comparison of the teratogenicity of methylmercury and selenomethionine injected into bird eggs
    Gary H Heinz
    Patuxent Wildlife Research Center, United States Geological Survey, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, MD 20705, USA
    Arch Environ Contam Toxicol 62:519-28. 2012
  4. doi request reprint Toxicity of methylmercury injected into eggs when dissolved in water versus corn oil
    Gary H Heinz
    US Geological Survey, Patuxent Wildlife Research Center, Beltsville, Maryland, USA
    Environ Toxicol Chem 30:2103-6. 2011
  5. doi request reprint Hormesis associated with a low dose of methylmercury injected into mallard eggs
    Gary H Heinz
    United States Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, MD 20705, USA
    Arch Environ Contam Toxicol 62:141-4. 2012
  6. doi request reprint Teratogenic effects of injected methylmercury on avian embryos
    Gary H Heinz
    US Geological Survey, Patuxent Wildlife Research Center, Beltsville, Maryland, USA
    Environ Toxicol Chem 30:1593-8. 2011
  7. doi request reprint Relating the ability of mallards to ingest high levels of sediment to potential contaminant exposure in waterfowl
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, BARC East, 10300 Baltimore Avenue, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 29:1621-4. 2010
  8. doi request reprint Enhanced reproduction in mallards fed a low level of methylmercury: an apparent case of hormesis
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 29:650-3. 2010
  9. doi request reprint Rapid increases in mercury concentrations in the eggs of mallards fed methylmercury
    Gary H Heinz
    Patuxent Wildlife Research Center, US Geological Survey, BARC East, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 28:1979-81. 2009
  10. doi request reprint A simplified method for correcting contaminant concentrations in eggs for moisture loss
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 28:1425-8. 2009

Detail Information

Publications20

  1. doi request reprint Reproduction in mallards exposed to dietary concentrations of methylmercury
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, MD, 20705, USA
    Ecotoxicology 19:977-82. 2010
    ..We conclude that mallard reproduction does not appear to be particularly sensitive to methylmercury...
  2. doi request reprint Intraperitoneal injections as a possible means of generating varied levels of methylmercury in the eggs of birds in field studies
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 29:1079-83. 2010
    ....
  3. doi request reprint A comparison of the teratogenicity of methylmercury and selenomethionine injected into bird eggs
    Gary H Heinz
    Patuxent Wildlife Research Center, United States Geological Survey, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, MD 20705, USA
    Arch Environ Contam Toxicol 62:519-28. 2012
    ..When either methylmercury or selenomethionine is injected into avian eggs, deformities start to occur at much lower concentrations than when the Hg or Se is deposited naturally in the egg by the mother...
  4. doi request reprint Toxicity of methylmercury injected into eggs when dissolved in water versus corn oil
    Gary H Heinz
    US Geological Survey, Patuxent Wildlife Research Center, Beltsville, Maryland, USA
    Environ Toxicol Chem 30:2103-6. 2011
    ..Consequently, the results from the earlier study that described the toxicity of methylmercury dissolved in corn oil to avian embryos were probably not compromised by the use of corn oil as a solvent...
  5. doi request reprint Hormesis associated with a low dose of methylmercury injected into mallard eggs
    Gary H Heinz
    United States Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, MD 20705, USA
    Arch Environ Contam Toxicol 62:141-4. 2012
    ..If methylmercury has a hormetic effect at low concentrations in avian eggs, these low concentrations may be important in a regulatory sense in that they may represent a no-observed adverse effect level (NOAEL)...
  6. doi request reprint Teratogenic effects of injected methylmercury on avian embryos
    Gary H Heinz
    US Geological Survey, Patuxent Wildlife Research Center, Beltsville, Maryland, USA
    Environ Toxicol Chem 30:1593-8. 2011
    ..59% of individual control dead embryos and hatchlings exhibited multiple deformities versus 3.18% for Hg-dosed dead embryos and hatchlings. Methylmercury seems to have a widespread teratogenic potential across many species of birds...
  7. doi request reprint Relating the ability of mallards to ingest high levels of sediment to potential contaminant exposure in waterfowl
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, BARC East, 10300 Baltimore Avenue, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 29:1621-4. 2010
    ....
  8. doi request reprint Enhanced reproduction in mallards fed a low level of methylmercury: an apparent case of hormesis
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 29:650-3. 2010
    ..81 microg/g on a wet-weight basis. At this time, one cannot rule out the possibility that low concentrations of Hg in eggs may be beneficial, and this possibility should be considered when setting regulatory thresholds for methylmercury...
  9. doi request reprint Rapid increases in mercury concentrations in the eggs of mallards fed methylmercury
    Gary H Heinz
    Patuxent Wildlife Research Center, US Geological Survey, BARC East, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 28:1979-81. 2009
    ..Depending on the dietary concentration of mercury, no more than approximately a week may be required for harmful concentrations (0.5-0.8 microg/g, wet weight) to be excreted into eggs...
  10. doi request reprint A simplified method for correcting contaminant concentrations in eggs for moisture loss
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 28:1425-8. 2009
    ..The advantages of the new method are its speed, accuracy, and simplicity: It does not require the calculation of a correction factor that has to be applied to each contaminant residue...
  11. doi request reprint Further declines in organochlorines in eggs of red-breasted mergansers from Lake Michigan, 1977-1978 versus 1990 versus 2002
    Gary H Heinz
    USGS Patuxent Wildlife Research Center, Beltsville, MD 20705, USA
    Environ Monit Assess 159:163-8. 2009
    ..2 to 1.4 microg/g). Between 1977-1978 and 1990 dieldrin decreased only 16% (from 0.82 to 0.69 microg/g), but from 1990 to 2002 a 96% decrease occurred (from 0.69 to 0.03 microg/g)...
  12. doi request reprint Species differences in the sensitivity of avian embryos to methylmercury
    Gary H Heinz
    US Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, MD 20705, USA
    Arch Environ Contam Toxicol 56:129-38. 2009
    ....
  13. doi request reprint Predicting mercury concentrations in mallard eggs from mercury in the diet or blood of adult females and from duckling down feathers
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 29:389-92. 2010
    ....
  14. ncbi request reprint Phosphorus amendment reduces hepatic and renal oxidative stress in mallards ingesting lead-contaminated sediments
    David J Hoffman
    U S Geological Survey, Patuxent Wildlife Research Center, Beltsville Lab, Beltsville, Maryland, USA
    J Toxicol Environ Health A 69:1039-53. 2006
    ....
  15. doi request reprint Interactions between methylmercury and selenomethionine injected into mallard eggs
    Jon D Klimstra
    U S Fish and Wildlife Service, Laurel, Maryland, USA
    Environ Toxicol Chem 31:579-84. 2012
    ..These findings warrant further studies to understand these mechanisms in both laboratory and field settings...
  16. doi request reprint A nonlethal microsampling technique to monitor the effects of mercury on wild bird eggs
    Katherine R Stebbins
    Patuxent Wildlife Research Center, US Geological Survey, BARC East, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 28:465-70. 2009
    ....
  17. ncbi request reprint Phosphorus amendment reduces hematological effects of lead in mallards ingesting contaminated sediments
    David J Hoffman
    U S Geological Survey Patuxent Wildlife Research Center, Beltsville Lab, BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, Maryland, 20705, USA
    Arch Environ Contam Toxicol 50:421-8. 2006
    ....
  18. ncbi request reprint Phosphorus amendment reduces bioavailability of lead to mallards ingesting contaminated sediments
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, Laurel, Maryland 20708 4017, USA
    Arch Environ Contam Toxicol 46:534-41. 2004
    ....
  19. doi request reprint Comparative embryotoxicity of a pentabrominated diphenyl ether mixture to common terns (Sterna hirundo) and American kestrels (Falco sparverius)
    Barnett A Rattner
    Patuxent Wildlife Research Center, US Geological Survey, c o BARC East, Building 308, 10300 Baltimore Avenue, Beltsville, MD 20705, USA
    Chemosphere 93:441-7. 2013
    ..Our findings suggest common tern embryos, and perhaps other tern species, are less sensitive to PBDEs than kestrel embryos. ..
  20. ncbi request reprint Mercury accumulation and loss in mallard eggs
    Gary H Heinz
    U S Geological Survey, Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, Maryland 20708 4017, USA
    Environ Toxicol Chem 23:222-4. 2004
    ..Higher concentrations of mercury were found in egg albumen than in yolk, and between 95 and 100% of the mercury in the eggs was in the form of methylmercury...