On the presence of Sarcocystis miescheri sp. nov. in camels of Qena Governorate

Abstract

It is the 1 st time to study sarcocysts of camels in Qena Governorate, 156 specimens of camels (Camelus dromedarius) were collected from different slaughtered-houses in Qena Governorate, the rate of infection with Sarcocystis was (42.3 %). Out of 126 males, 54 (42.85 %) were infected while the infected number of females were 12 (40 %) from 30 specimens. Morphological and ultrastructures of muscle stage (sarcocyst) have been reported and illustrated in this study by both light and electron microscope, TEM showed that there are two types of Sarcocystis in camels in Qena Governorate. Dogs that infected with camel's oesophagus muscles contain mature Sarcocystis excreated two different types of oocysts in their feaces after 13-15 days of infection. Detailed description of oocysts has been reported.

Identification of Sarcocystis spp. in One-humped Camels (Camelus dromedarius) from Riyadh and Dammam, Saudi Arabia, via Histological and Phylogenetic Approaches

“…Thick-walled cysts were found in the esophagus of one-humped camels slaughtered in Egypt [ 10 ]; in the esophagus, diaphragm, heart, skeletal muscles, and tongue of one-humped camels slaughtered in Egypt [ 19 ]; in the esophagus of one-humped camels slaughtered in Egypt [ 39 ], and in the esophagus, skeletal muscles, and tongue of one-humped camels slaughtered in Egypt [ 40 ]. Similarly, both thin- and thick-walled Sarcocystis cysts have been suggested to be at different stages in the same parasite and have been termed S. cameli [ 41 ].…”

“…However, the presence of sarcocysts in camel meat may decrease its value for human utilization because camels act as intermediate hosts for at least two Sarcocystis spp. ; furthermore, such infection is a general phenomenon in the one-humped camel due to its worldwide distribution [10][11][12]. The presence of sarcocysts in the musculature decreases the economic value of the musculature, especially if macroscopic cysts are detected, as their presence leads to condemning the product for consumption [13,14].…”

“…S. camelicanis was also defined in Egypt [19], wherein the authors found that the primary cyst wall appeared as a thick layer and had finger-like protrusions with a blunt apex. Furthermore, another study defined S. miescheri in Egypt [10], in which the primary cyst wall appeared as a thick electron-dense layer with spine-like protrusions.…”

An update on sarcocystosis in one-humped camels (Camelus dromedarius)

“…The ground substance divides the cyst cavity into multiple compartments within which metrocytes and merozoites/bradyzoites are packed. Generally, metrocytes are located at the periphery while bradyzoites occupy the interior of each cyst (Abdel Ghaffar et al 1979; Al-Quraishy et al 2004; Mandour et al 2011). The size and shape of bradyzoites vary depending on the location within camel tissues.…”

“…However, the presence of sarcocysts in camel meat could potentially downgrade its quality for human consumption as camels serve as an intermediate host for at least two Sarcocystis spp. and the infection is common in the dromedary camel throughout its distribution globally (Mandour et al 2011; Hamidinejat et al 2013; Omer et al 2017). Infected camels generally exhibit subclinical infections, although Sarcocystis spp.…”