Abstract
ABSTRACT. Berto B.P., Luz H.R., Ferreira I., Flausino W. & Lopes C.W.G. Two new hosts for Isospora tiesangui Berto, Flausino, Luz, Ferreira & Lopes, 2008 (Apicomplexa: Eimeriidae). [Dois novos hospedeiros para Isospora tiesangui Berto, Flausino, Luz, Ferreira & Lopes, 2008 (Apicomplexa: Eimeriidae).] Revista Brasileira de Medicina Veterinária, 32(3):169-171, 2010. Laboratório de Coccídios e Coccidioses, Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro. BR-465 km-07. Seropédica, 23890-000, RJ, Brasil. Email: bertobp@ufrrj.br This study report palm tanagers, Thraupis palmarum, and blue dacnis, Dacnis cayana, parasitized by Isospora tiesangui. This coccidium was originally described parasitizing the Brazilian tanager Ramphocelus bresilius dorsalis and has never been described in other hosts. Its oocysts were spherical to sub-spherical, with a smooth, bilayered wall. Micropyle, oocyst residuum and polar granule were absent. The sporocysts were slightly ovoid. The Stieda body was flattened and the substieda body was prominent and rounded. The sporocyst residuum was composed of granules of different sizes, and the sporozoites were large and elongate, with refractile body and nucleus. Thus, based on this study, the palm tanager, T. palmarum, and the blue dacnis, D. cayana are considered as new hosts for I. tiesangui.