Elizabeth W Freeman

Summary

Affiliation: Smithsonian Institution
Country: USA

Publications

  1. doi request reprint Social factors influence ovarian acyclicity in captive African elephants (Loxodonta africana)
    Elizabeth W Freeman
    Department of Reproductive Sciences, Conservation and Research Center, National Zoological Park, Smithsonian Institution, Front Royal, Virginia 22630, USA
    Zoo Biol 28:1-15. 2009
  2. doi request reprint Influence of dominance status on adrenal activity and ovarian cyclicity status in captive African elephants
    Christine M Proctor
    Department of Reproductive Sciences, Smithsonian National Zoological Park, Conservation and Research Center, Front Royal, Virginia 22630, USA
    Zoo Biol 29:168-78. 2010
  3. doi request reprint Results of a second survey to assess the reproductive status of female Asian and African elephants in North America
    Christine M Proctor
    Department of Reproductive Sciences, Smithsonian National Zoological Park, Conservation and Research Center, Front Royal, VA 22630, USA
    Zoo Biol 29:127-39. 2010
  4. doi request reprint Investigating the impact of rank and ovarian activity on the social behavior of captive female African elephants
    Elizabeth W Freeman
    National Zoological Park, Conservation and Research Center, Front Royal, Virginia, USA
    Zoo Biol 29:154-67. 2010
  5. ncbi request reprint Comparative endocrinology of testicular, adrenal and thyroid function in captive Asian and African elephant bulls
    Janine L Brown
    Department of Reproductive Sciences, Smithsonian Institution, National Zoological Park, Conservation and Research Center, 1500 Remount Road, Front Royal, VA 22630, USA
    Gen Comp Endocrinol 151:153-62. 2007
  6. doi request reprint Assessment of diurnal urinary cortisol excretion in Asian and African elephants using different endocrine methods
    Janine L Brown
    Department of Reproductive Sciences, Smithsonian s National Zoological Park, Conservation and Research Center, Front Royal, Virginia, USA
    Zoo Biol 29:274-83. 2010
  7. doi request reprint Using behavioral observations and keeper questionnaires to assess social relationships among captive female African elephants
    Elizabeth W Freeman
    Department of Reproductive Sciences, Conservation and Research Center, Front Royal, Virginia, USA
    Zoo Biol 29:140-53. 2010
  8. ncbi request reprint Species and fetal gender effects on the endocrinology of pregnancy in elephants
    Jordana M Meyer
    Department of Reproductive Sciences, Conservation and Research Center, National Zoological Park, Smithsonian Institution, Front Royal, VA 22630, USA
    Gen Comp Endocrinol 138:263-70. 2004

Collaborators

Detail Information

Publications8

  1. doi request reprint Social factors influence ovarian acyclicity in captive African elephants (Loxodonta africana)
    Elizabeth W Freeman
    Department of Reproductive Sciences, Conservation and Research Center, National Zoological Park, Smithsonian Institution, Front Royal, Virginia 22630, USA
    Zoo Biol 28:1-15. 2009
    ..Further studies on how social and environmental dynamics affect hormone levels in free-living, cycling elephants are needed to determine whether acyclicity is strictly a captivity-related phenomenon...
  2. doi request reprint Influence of dominance status on adrenal activity and ovarian cyclicity status in captive African elephants
    Christine M Proctor
    Department of Reproductive Sciences, Smithsonian National Zoological Park, Conservation and Research Center, Front Royal, Virginia 22630, USA
    Zoo Biol 29:168-78. 2010
    ..e., coefficient of variation, standard deviation) in cortisol secretion. This study suggests that alterations in adrenal activity are not related to dominance status nor contribute directly to acyclicity in captive African elephants...
  3. doi request reprint Results of a second survey to assess the reproductive status of female Asian and African elephants in North America
    Christine M Proctor
    Department of Reproductive Sciences, Smithsonian National Zoological Park, Conservation and Research Center, Front Royal, VA 22630, USA
    Zoo Biol 29:127-39. 2010
    ..With more data we hope to determine what factors are related to changes in ovarian status and how to reverse the trend towards acyclicity...
  4. doi request reprint Investigating the impact of rank and ovarian activity on the social behavior of captive female African elephants
    Elizabeth W Freeman
    National Zoological Park, Conservation and Research Center, Front Royal, Virginia, USA
    Zoo Biol 29:154-67. 2010
    ..quot; Social rank drives the interactions of ex situ female African elephants more than ovarian cyclicity status. Thus, behavioral interactions cannot be used to predict which cycling elephants are most likely to become acyclic...
  5. ncbi request reprint Comparative endocrinology of testicular, adrenal and thyroid function in captive Asian and African elephant bulls
    Janine L Brown
    Department of Reproductive Sciences, Smithsonian Institution, National Zoological Park, Conservation and Research Center, 1500 Remount Road, Front Royal, VA 22630, USA
    Gen Comp Endocrinol 151:153-62. 2007
    ....
  6. doi request reprint Assessment of diurnal urinary cortisol excretion in Asian and African elephants using different endocrine methods
    Janine L Brown
    Department of Reproductive Sciences, Smithsonian s National Zoological Park, Conservation and Research Center, Front Royal, Virginia, USA
    Zoo Biol 29:274-83. 2010
    ..However, unexplained differences in quantitative results suggest there may be sample matrix effects and that data generated using different techniques may not be directly comparable or interchangeable...
  7. doi request reprint Using behavioral observations and keeper questionnaires to assess social relationships among captive female African elephants
    Elizabeth W Freeman
    Department of Reproductive Sciences, Conservation and Research Center, Front Royal, Virginia, USA
    Zoo Biol 29:140-53. 2010
    ..In conclusion, we demonstrated that short-term behavioral observations and keeper questionnaires provided similar behavioral profiles for female African elephants housed in North American zoos...
  8. ncbi request reprint Species and fetal gender effects on the endocrinology of pregnancy in elephants
    Jordana M Meyer
    Department of Reproductive Sciences, Conservation and Research Center, National Zoological Park, Smithsonian Institution, Front Royal, VA 22630, USA
    Gen Comp Endocrinol 138:263-70. 2004
    ....