Isospora machadoae sp. nov. (Protozoa: Apicomplexa: Eimeriidae), a new coccidian species from white-necked thrushes Turdus albicolis (Passeriformes: Turdidae) of South America

By

De Pinho, Irlane F.
Da Silva, Lidiane M.
Rodrigues, Mariana B.
Lopes, Bruno Do B.
Oliveira, Mariana S.
Luz, Hermes R.
Ferreira, Ildemar
Lopes, Carlos Wilson G.
Berto, Bruno P.

Type

Article

Date of Publication

2018-3-9

Original Publication

MycoKeys

Volume

35

Pages

1--4

Subjects

Coccidia , oocysts , Parque Nacional do Itatiaia , taxonomy , wild birds

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/zoologia.35.e24570

 

Abstract

A new coccidian species parasitizing white-necked thrushesTurdus albicollisVieillot, 1818 is described from the Parque Nacional do Itatiaia, in Southeastern Brazil.Isospora machadoaesp. nov. has oocysts that are sub-spherical, 22.2 × 21.2 µm, with bilayered wall, ~1.3 μm thick. Outer layer is rough with micropyle and micropyle cap. Oocyst residuum is absent, but one or two polar granules are present. Sporocysts are ellipsoidal, 13.3 × 9.7 µm. The Stieda body is flattened to half-moon-shaped and substieda body rounded. Sporocyst residuum is present, composed of scattered spherules of different sizes. Sporozoites are vermiform with a refractile body and a nucleus. These parasitized thrushes had no apparent clinical signs of coccidiosis or high densities of oocysts in feces. This condition may be associated with a specific low pathogenicity ofI. machadoaesp. nov. and/or with the conserved habitat of these birds, which ensures the ecological niches and thus the immunocompetence to wildlife.