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Issue: Vol. 2650 No. 1: 19 Oct. 2010
Type: Articles
Published: 2010-10-19
DOI: 10.11646/zootaxa.2650.1.5
Page range: 57–62
Abstract views: 37
PDF downloaded: 1

Isospora ramphoceli n. sp. (Apicomplexa: Eimeriidae) from the Brazilian tanager (Aves: Passeriformes: Thraupidae) Ramphocelus bresilius dorsalis Sclater, 1855

Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro (UFRRJ), BR-465 km 7, 23890-000 Seropédica, RJ, Brazil
Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro (UFRRJ), BR-465 km 7, 23890-000 Seropédica, RJ, Brazil
Departamento de Biologia Animal, Instituto de Biologia, UFRRJ, BR-465 km 7, 23890-000 Seropédica, RJ, Brazil – CNPq fellowship
Departamento de Biologia Animal, Instituto de Biologia, UFRRJ, BR-465 km 7, 23890-000 Seropédica, RJ, Brazil – CNPq fellowship
Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro (UFRRJ), BR-465 km 7, 23890-000 Seropédica, RJ, Brazil
Aves taxonomy morphology coccidia Isospora oocysts Passeriformes Thraupidae Marambaia Island Rio de Janeiro Brazil

Abstract

In the current study, a new coccidian species (Protozoa: Apicomplexa: Eimeriidae) collected from the Brazilian tanager Ramphocelus bresilius dorsalis Sclater, 1855 is reported from Brazil. Isospora ramphoceli n. sp. has oocysts which are spherical to sub-spherical, 23.7 × 22.8 μ m, with smooth, bilayered wall, ~1.2 μ m thick. Micropyle, oocyst residuum and polar granule are absent. Sporocysts are ellipsoidal or slightly ovoidal, 16.0 × 11.4 µm. Stieda body knob-like and prominent and substieda body large and homogeneous. Sporocyst residuum is composed of granules of different sizes. Sporozoites are vermiform with one refractile body and a nucleus. This is the sixth description of an isosporoid coccidium infecting R. b. dorsalis and the twelfth description from Thraupidae.

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