A new species of Isospora Schneider, 1881 (Apicomplexa: Eimeriidae) from the Bali (Rothschild's) mynah Leucopsar rothschildi (Passeriformes: Sturnidae), and comments concerning the genera Atoxoplasma Garnham, 1950 and Isospora

摘要

A new species of isosporan (Apicomplexa: Eimeriidae) is reported from the Bali mynah Leucopsar rothschildi (Passeriformes: Sturnidae). Oöcysts of Isospora rothschildi n. sp. are spherical to subspherical, 22.3×21.6 (20–26 × 19–23) μm, with a shape index (length/width) of 1.03 (1.00–1.15). A micropyle and oöcyst residuum are absent, but one to many polar granules are present. Sporocysts are ovoidal, 15.9×10.6 (15–18 × 9.5–11) μm, with Stieda and substieda bodies and a shape index of 1.50 (1.39–1.65). Each sporocyst contains an ellipsoidal sporocyst residuum, 8.0×5.8 (6–11 × 5–8), and each sporozoite contains two refractile bodies. No correlation was found between the presence of coccidian oöcysts in the faeces of some of the birds and Atoxoplasma in blood smears.