Health assessment of American Oystercatchers (Haematopus paluatus paluatus) in Georgia and South Carolina

Daphne Carlson-Bremer, Terry M. Norton, Kirsten Vk Gilardi, Ellen S. Dierenfeld, Brad Winn, Felicia J. Sanders, Carolyn Cray, Mareie Oliva, Tai C. Chen, Samantha E. Gibbs, Maria S. Sepúlveda, Christine K Johnson

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The American Oystercatcher (Haematopus palliatus palliatus) is the only species of oystercatcher native to the Atlantic coast of North America and is restricted in distribution to intertidal shellfish beds in coastal areas. Currently, the American Oystercatcher population in South Carolina and Georgia is threatened by widespread habitat loss, resulting in low reproductive success and small population size. Oystercatchers could be an important indicator of ecosystem health because they depend on quality coastal breeding habitat and prey on bivalves, which can accumulate toxins and pathogens from the local environment. Data were collected from American Oystercatchers (n = 171) captured at five sites in South Carolina and Georgia between 2001 and 2006. Iridial depigmentation was frequently noted during physical examination and was more prevalent in female birds. Female birds were larger than males on average, but ranges for weight and morphometry measurements had considerable overlap. Mean values were calculated for hematology, plasma biochemistry, and hormone levels, and prevalence of exposure to select pathogens was determined. Mercury was the only trace metal detected in blood samples. These data provide baseline health information needed for longitudinal monitoring and conservation efforts for American Oystercatchers. In addition, this study illustrates the potential use of this species as an indicator for the health of the southeastern US coastal nearshore ecosystem.

Original languageEnglish (US)
Pages (from-to)772-780
Number of pages9
JournalJournal of Wildlife Diseases
Volume46
Issue number3
StatePublished - Jul 2010

Keywords

  • American Oystercatcher
  • Biochemistry
  • Ecosystem health
  • Hematology
  • Indicator

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology

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    Carlson-Bremer, D., Norton, T. M., Gilardi, K. V., Dierenfeld, E. S., Winn, B., Sanders, F. J., Cray, C., Oliva, M., Chen, T. C., Gibbs, S. E., Sepúlveda, M. S., & Johnson, C. K. (2010). Health assessment of American Oystercatchers (Haematopus paluatus paluatus) in Georgia and South Carolina. Journal of Wildlife Diseases, 46(3), 772-780.