A New Isosporan (Apicomplexa: Eimeriidae) from Wood Thrush, Hylocichla mustelina (Aves: Passeriformes: Turdidae), in Oklahoma
| Autor: | Chris T. McAllister, R. Scott Seville |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Eimeriidae
Male 030231 tropical medicine Zoology 030308 mycology & parasitology Apicomplexa Songbirds 03 medical and health sciences Feces 0302 clinical medicine Coccidia biology.animal Animals Microscopy Interference Ecology Evolution Behavior and Systematics 0303 health sciences biology Isospora Systematics-Phylogenetics Bird Diseases Oocysts Oklahoma Isosporiasis biology.organism_classification Passerine Stieda body Polar granule Wood thrush Parasitology |
| Zdroj: | J Parasitol |
| Popis: | The wood thrush, Hylocichla mustelina, is a North American passerine bird closely related to other thrushes and is widely distributed across North America. Nothing is known of the coccidian parasites of this bird. Feces from a single H. mustelina found dead in McCurtain County, Oklahoma were collected and examined for coccidia; it was found to be passing a new species of Isospora. Oocysts of Isospora gmelini n. sp. are subspheroidal to ellipsoidal with a smooth bilayered wall, measure (length [L] × width [W]) 19.5 × 16.5 µm, and have a L/W ratio of 1.2; a micropyle and oocyst residuum were absent but polar granule(s) are present. Sporocysts are ellipsoidal to elongate and measure 13.4 × 8.9 µm, L/W 1.5; a buttonlike Stieda body is present, but sub-Stieda and para-Stieda bodies are absent. The sporocyst residuum is composed of a compact spheroid with a dense, irregular mass of finer granules lying between and dispersed among the sporozoites. Although several isosporans have been reported from other turdid birds, mainly from Brazil and Costa Rica, this is the initial coccidian reported from H. mustelina and only the second known from the Turdidae in the mainland of the United States. |
| Databáze: | OpenAIRE |
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