Morfologia e sistemática de coccídios (Apicomplexa: Eimeriidae) parasitas de aves Passeriformes da Ilha da Marambaia, Rio de Janeiro, Brasil

Abstract

Coccidiosis associated with the genera Eimeria Schneider, 1875 and Isospora Schneider, 1881 in the order Passeriformes are reported for more than two centuries. This study aimed to contribute to the morphology and systematic of coccidian parasites of the order Passeriformes, providing scientific basis for identification of parasite species of birds from North, South and Central America. The coccidia were organized and grouped according to the family of the host, following the concept widely recognized of family-specificity and the systematic of the class Aves updated. Isospora tiesangui, I. marambaiensis, I. sepetibensis, I. cadimi, I. navarroi, I. ramphoceli, I. mionectesi, I. feroxis, I. cagasebi, I. coerebae, I. piacobrai e Eimeria sicki were identified and characterized according to their respective hosts of the order Passeriformes, which inhabit the Atlantic forest of the Marambaia Island, Rio de Janeiro, Brazil. The main feature of differentiation and identification of these species was the Stieda and substieda bodies, since the morphometric parameters did not provide sufficient differentiation. The specificity of coccidia occurred at the family level, because Ramphocelus bresilius dorsalis and the new hosts Dacnis cayana and Thraupis palmarum, family Thraupidae, were described for the species I. tiesangui, I sepetibensis and I. navarroi, and, similarly, Myiarchus ferox and Leptopogon amaurocephalus, family Tyrannidae, were described for E. sicki. Finally, dichotomous keys for identification were effective for the families Thraupidae and Tyrannidae.