Natural fatal Sarcocystis falcatula infections in free-ranging eagles in North America

Arno Wünschmann, Daniel Rejmanek, Patricia A Conrad, Natalie Hall, Luis Cruz-Martinez, Samuel B. Vaughn, Bradd C. Barr

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Three bald eagles (Haliaeetus leucocephalus) and 1 golden eagle (Aquila chrysaetos) were admitted to rehabilitation facilities with emaciation, lethargy, and an inability to fly. Intravascular schizonts and merozoites were present in 2 bald eagles, mainly in the lung tissue, whereas the third bald eagle and the golden eagle had lymphohistiocytic encephalitis with intralesional schizonts and merozoites. In all eagles, protozoal tissue cysts were present in skeletal musculature or heart. The protozoal organisms were morphologically compatible with a Sarcocystis sp. By immunohistochemistry, the protozoal merozoites were positive for Sarcocystis falcatula antigen in all cases when using polyclonal antisera. Furthermore, the protozoa were confirmed to be most similar to S. falcatula by polymerase chain reaction in 3 of the 4 cases. To the authors' knowledge, this report presents the first cases of natural infection in eagles with S. falcatula as a cause of mortality.

Original languageEnglish (US)
Pages (from-to)282-289
Number of pages8
JournalJournal of Veterinary Diagnostic Investigation
Volume22
Issue number2
StatePublished - Mar 1 2010

Fingerprint

Sarcocystis falcatula
Sarcocystis
Haliaeetus leucocephalus
Eagles
eagles
North America
merozoites
schizonts
Merozoites
Infection
infection
Schizonts
Aquila chrysaetos
emaciation
encephalitis
immunohistochemistry
Protozoa
antiserum
Emaciation
polymerase chain reaction

Keywords

  • Aquila chrysaetos
  • Bald eagles
  • Electron microscopy
  • Golden eagle
  • Haliaeetus leucocephalus
  • Immunohistochemistry
  • Polymerase chain reaction
  • Sarcocystis falcatula

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Wünschmann, A., Rejmanek, D., Conrad, P. A., Hall, N., Cruz-Martinez, L., Vaughn, S. B., & Barr, B. C. (2010). Natural fatal Sarcocystis falcatula infections in free-ranging eagles in North America. Journal of Veterinary Diagnostic Investigation, 22(2), 282-289.

Natural fatal Sarcocystis falcatula infections in free-ranging eagles in North America. / Wünschmann, Arno; Rejmanek, Daniel; Conrad, Patricia A; Hall, Natalie; Cruz-Martinez, Luis; Vaughn, Samuel B.; Barr, Bradd C.

In: Journal of Veterinary Diagnostic Investigation, Vol. 22, No. 2, 01.03.2010, p. 282-289.

Research output: Contribution to journalArticle

Wünschmann, A, Rejmanek, D, Conrad, PA, Hall, N, Cruz-Martinez, L, Vaughn, SB & Barr, BC 2010, 'Natural fatal Sarcocystis falcatula infections in free-ranging eagles in North America', Journal of Veterinary Diagnostic Investigation, vol. 22, no. 2, pp. 282-289.
Wünschmann A, Rejmanek D, Conrad PA, Hall N, Cruz-Martinez L, Vaughn SB et al. Natural fatal Sarcocystis falcatula infections in free-ranging eagles in North America. Journal of Veterinary Diagnostic Investigation. 2010 Mar 1;22(2):282-289.
Wünschmann, Arno ; Rejmanek, Daniel ; Conrad, Patricia A ; Hall, Natalie ; Cruz-Martinez, Luis ; Vaughn, Samuel B. ; Barr, Bradd C. / Natural fatal Sarcocystis falcatula infections in free-ranging eagles in North America. In: Journal of Veterinary Diagnostic Investigation. 2010 ; Vol. 22, No. 2. pp. 282-289.
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