title: Tyzzeria parvula (Kotlan, 1933) Klimes, 1963 (Apicomplexa: Eimeriidae) in the greylag goose (Anser anser Linnaeus, 1758) in southeastern Brazil.
abstract: Tyzzeria parvula from the greylag goose (Anser anser) is described in Southeastern Brazil. Oocysts are spherical to subspherical ranging from 12.4-180 to 10.7-15.9 microm (15.4 X 13.4 microm), shape index 1.15, with a double layered wall 0.4 to 0.7 microm thick (n=20), outer smooth and colorless, inner pale greenish. Micropyle is absent, but oocyst residuum is present containing numerous granules and spherules. Surrounded by residuum there are eight sporozoites having one end round and other fine and slightly curved.
authors: Curso de Pós-Graduação em Microbiologia Veterinária, Universidade Federal Rural do Rio de Janeiro, km 7 da BR-465, Seropédica, RJ, 23.890-000. bertobp@ufrrj.br
authors: Bruno P
authors: BP
authors: Berto
authors: Marcel
authors: M
authors: Teixeira
authors: Carlos Wilson G
authors: CW
authors: Lopes
mesh_terms: D000818:Animals; D001938:Brazil; D021743:Eimeriidae / Q000302:isolation & purification*; D005777:Geese / Q000469:parasitology*