Folia Parasitologica, vol. 59 (2012), issue 1

Folia Parasitologica 59[1] 27-31 (2012) | 10.14411/fp.2012.005

Redescription of Eimeria dorcadis Mantovani, 1966 (Apicomplexa: Eimeriidae) from the dorcas gazelle (Gazella dorcas) in Saudi Arabia

Osama B. Mohammed1, Abdulaziz N. Alagaili1, Sawsan A. Omer2
1 KSU Mammals Research Chair, Department of Zoology, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
2 Department of Zoology, College of Science, King Saud University, University Centre for Women Students, P. O. Box 22452, Riyadh 11495, Saudi Arabia

Eimeria dorcadis Mantovani, 1966 is redescribed from dorcas gazelle (Gazella dorcas (L.)) from Saudi Arabia. Oocysts were detected in 7 out of 22 faecal samples (32%) using floatation method. The sporulated oocysts are cylindrical, slightly flattened at the micropylar pole, measure in average 32 × 19 μm (27-36 × 16-24 μm), length/width ratio being 1.7 (1.5-2.1). Oocyst wall is 1.2 μm thick, smooth, double-layered; outer layer is slightly thicker, light blue in colour; inner layer brownish, with micropyle in the inner layer and apparently continual outer one, measures 2.2 μm, but lacks a micropylar cap. The sporocyst elongate-ellipsoidal, measures 14 × 8 μm (12-17 × 6-9 μm), length/width ratio being 1.8, with sporocyst residuum as circular compact, coarse, refractile granules. Stieda body is present, while substieda body is absent. Sporozoites banana-shaped, measure 11 × 2.5 μm, each with a large spheroidal refractile body at the wider pole. Sporulation time is 2-3 days at 25 ± 2 °C.

Keywords: coccidia, Gazella dorcas, Saudi Arabia, Eimeria dorcadis, morphology

Received: November 18, 2011; Accepted: January 26, 2012; Published: February 23, 2012


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