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

Abstract

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 elongateellipsoidal, 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.

Eimeria tamimi sp. n. (Apicomplexa: Eimeriidae) from the rock hyrax (Procavia capensis jayakari) in central Saudi Arabia

“…Eimeria dorcadis Mantovani, 1966 was first described by Mantovani (1966) and the original description was devoid of Stieda body. Mohammed et al (2012) redescribed the species with a visible Stieda body which goes well with the findings from all mammalian eimerian parasites which possess Stieda body. Therefore, it may be likely that reinvestigating of E. trichechi may result in demonstrating the presence of Stieda body and also investigating their phylogenetic relationship with relevant eimerian parasites.…”

Traditional Diagnosis of Eimeria spp. in Fallow Deer at Middle Parts of Iraq

“…The presence or absence of a micropylar cap, the diameters of the oocyst and the form of the oocysts are valid criteria for differentiating Eimeria species (32). Four species of Eimeria were detected in this study according to the morphological characterization and measurements of oocyst.…”

New approaches for morphological diagnosis of bovine Eimeria species: a study on a subtropical organic dairy farm in Brazil

“…Even, its absence in E. cylindrica and E. zuernii assisted in the identification. In E. bovis, the spacing between the inner and outer layers of the oocyst and the absence of shading between these two layers in (Mohammed et al 2012), since it is functionally unlikely that there is a discontinuity in the inner layer of an oocyst (Berto et al 2014).…”