Isospora Tiaris n.sp. (Apicomplexa: Eimeriidae) From the Sooty Grassquit (Tiaris Fuliginosa), a Passeriform Bird of South America

J Parasitol. 1997 Jun;83(3):465-6.


Isospora tiaris n. sp. is described from the feces of an adult bird, a sooty grassquit (Tiaris fuliginosa) from Venezuela. The oocysts are subspherical, 27.1 x 23.8 (24.7-30.0 x 21.2-26.5) microns with a bilayered, smooth, colorless wall. A micropyle and oocyst residuum are absent; an ellipsoidal polar granule is usually present. Sporocysts are ovoidal, 14.7 x 10.8 (12.4-16.8 x 8.8-12.4) microns with prominent Stieda and substieda bodies and a residuum composed of small uniform granules.

Publication types

  • Case Reports

MeSH terms

  • Animals
  • Bird Diseases / parasitology*
  • Birds
  • Coccidiosis / parasitology
  • Coccidiosis / veterinary*
  • Feces / parasitology
  • Isospora / classification
  • Isospora / isolation & purification*
  • Isospora / ultrastructure
  • Venezuela