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  • Title: Two new species of coccidia (Apicomplexa: Eimeriidae) from ground skinks, Scincella lateralis (Sauria: Scincidae), from Arkansas, USA.
    Author: McAllister CT, Scott Seville R, Connior MB, Trauth SE, Robison HW.
    Journal: Syst Parasitol; 2014 May; 88(1):85-90. PubMed ID: 24711115.
    Abstract:
    Between February 2011 and January 2014, 75 ground skinks, Scincella lateralis (Say) were collected from 13 counties of Arkansas and McCurtain County, Oklahoma, USA, and examined for coccidia. Two (3%) and 11 (15%) S. lateralis were found to be passing oöcysts of a new choleoeimerian and isosporan, respectively. Oöcysts of Choleoeimeria ouachitensis n. sp. are ellipsoidal to cylindroidal with a smooth, colourless, bi-layered wall and measure 27.2 × 15.6 μm, and have a length/width (L/W) ratio of 1.7; both micropyle and oöcyst residuum are absent, but 1-2 polar granule(s) are present. Sporocysts are ovoidal, 8.9 × 6.8 μm, L/W 1.3; neither Stieda, sub-Stieda and para-Stieda bodies are present; the walls have two valves joined by longitudinal sutures; a sporocyst residuum consisted of dispersed granules between sporozoites. Oöcysts of Isospora koberi n. sp. are ovoidal with a smooth, colourless, bi-layered wall and measure 25.1 × 20.5 μm, L/W 1.2; both micropyle and oöcyst residuum are absent, but a polar granule is rarely present. Sporocysts are ovoidal, 11.4 × 8.6 μm, L/W 1.3; a nipple-like Stieda body and a sub-Stieda body are present without a para-Stieda body; a sporocyst residuum consisted of condensed granules dispersed between sporozoites. This is the second choleoeimerian and third isosporan reported from S. lateralis.
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