Isospora piacobrai n. sp. (Apicomplexa: Eimeriidae) from the masked yellowthroat Geothlypis aequinoctialis (Gmelin) (Passeriformes: Parulidae) in South America.
A new coccidian species (Protozoa: Apicomplexa: Eimeriidae) obtained from masked yellowthroat Geothlypis aequinoctialis (Gmelin) is reported from Brazil. Isospora piacobrai n. sp. has oöcysts which are subspheroidal to ovoidal, measure 15.8 x 10.5 microm and have a smooth, bilayered wall c. 1.2 microm thick. A micropyle and oöcyst residuum are absent, but a polar granule is present. Its sporocysts are ovoidal and measure 15.8 x 10.5 microm. The Stieda body is knob-like and prominent, the substieda body large, trapezoidal and homogeneous, and the sporocyst residuum composed of granules of different sizes. Sporozoites are vermiform with one refractile body and a nucleus. This is the first description of an isosporoid coccidian infecting a bird of the family Parulidae.
Curso de Pós-Graduação em Ciências Veterinárias, Universidade Federal Rural do Rio de Janeiro (UFRRJ), BR-465 km 7, Seropédica, RJ, 23890-000, Brazil. bertobp@ufrrj.br
Bruno P
BP
Berto
Hermes Ribeiro
HR
Luz
Walter
W
Flausino
Ildemar
I
Ferreira
Carlos W G
CW
Lopes
D000818:Animals; D001715:Bird Diseases / Q000469:parasitology*; D001938:Brazil; D007549:Isospora / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification*; D021865:Isosporiasis / Q000469:parasitology / Q000662:veterinary*; D008853:Microscopy; D046109:Passeriformes / Q000469:parasitology*; D033761:Spores, Protozoan / Q000166:cytology