Species Differntiation of the Coccidia of the Domestic Rabbit Based on a Study of the Oöcysts*

Coccidia of the Leporidae*

“…E. irresidua Kessel cuniculus throughout the world. Carvalho (4) transmitted it experimentally to the cottontail Syluilagus floridanus mearnsii Allen, 1894, but Kessel & Jankiewicz (18) were unable to transmit it to the guinea pig or domestic chicken. I t is fairly common.…”

“…I t is fairly common. Its oocysts (4, 18) are ovoid, blunt at the micropyle end, light to dark yellow, 31-43 x 22-27 pm, with a mean of 38 X 26 pm. The conspicuous micropyle is not surrounded by a thickened ring.…”

Observations on oocyst development of Eimeria stiedai in rabbits

“…A thinning of the wall at one end of the oocyst of E. stiedai was depicted by Kessel and Jankiewicz (1931) and Marotel and Guilhon (1941). Jolley et al (1979) examined the process of excystation by chemical treatment in vitro and found that the wall ruptured mainly around the micropylar lid.…”

Life cycle of Eimeria vejdovskyi Pakandl, 1988: electron microscopy study

“…Pakandl (1988) identi®ed two species with similar oocyst morphology: one with larger oocysts and a 10-day prepatent period, the second with smaller oocysts and a 5-day prepatent period. Pakandl reserved the name E. media for the ®rst because the oocyst size corresponded to the description given by Kessel (1929) and Kessel and Jankiewicz (1931). Pakandl (1988) called the second species E. vejdovskyi Initial dose 5´10 7 5´10 6 10 5 10 5 10 4 10 4 10 3 10 3 or 10 2 Pakandl (1988) as follows: to retain E. media for species having smaller oocysts and a 5-day prepatent period and to use E. vejdovskyi for the other species with larger oocysts and a 10-day prepatent period.…”