A new eimerian (Apicomplexa: Eimeriidae) from southern short-tailed shrews, Blarina carolinensis (Bachman) (Soricimorpha: Soricidae: Soricinae) from southeastern Oklahoma, USA
| Autor: | R. Scott Seville, Chris T. McAllister |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Eimeriidae 010607 zoology Zoology 01 natural sciences Article Eimeria Apicomplexa 03 medical and health sciences Species Specificity biology.animal Animals biology Shrews Shrew Oocysts Blarina carolinensis Oklahoma Anatomy 030108 mycology & parasitology biology.organism_classification Stieda body Animal ecology Polar granule Parasitology |
| Zdroj: | Systematic Parasitology. 94:711-716 |
| ISSN: | 1573-5192 0165-5752 |
| DOI: | 10.1007/s11230-017-9730-8 |
| Popis: | A new species of Eimeria Schneider, 1875 (Apicomplexa: Eimeriidae) is described from faecal samples of two of three southern short-tailed shrews, Blarina carolinensis (Bachman) (Soricidae) from southeastern Oklahoma, USA. Oöcysts of Eimeria tkachi n. sp. are subspheroidal to ovoidal with a rough-pitted, tan colored, bi-layered wall, measure 16.5 × 15.2 μm, and have a length/width (L/W) ratio of 1.1; both micropyle and oöcyst residuum are absent, but polar granule(s) are present. Sporocysts are ovoidal, 9.5 × 6.5 μm, L/W 1.4; a distinct button-like Stieda body is present, but the sub-Stieda and para-Stieda bodies are absent and the sporocyst residuum is composed of large globules distributed throughout the sporocyst. Sporozoites have a spheroidal anterior refractile body, a subspheroidal posterior refractile body, and one centrally-located nucleus. This is the smallest eimerian described thus far from the Soricidae, the initial description of a coccidian from B. carolinensis, and the first from any shrew from Oklahoma. |
| Databáze: | OpenAIRE |
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