Eimeria perardii Yakimoff and Gousseff, 1936

Type host: Erinaceus europaeus Linnaeus, 1758, Eurasian hedgehog.

Type locality: EUROPE: Russia, Polotzk District, Leningrad Zoo.

Geographic distribution: EUROPE: Russia; Bulgaria.

Description of oocyst: Oocyst shape: ovoid; number of walls: 1; wall thickness: unknown, but probably <1; wall characteristics: outer layer yellowish, apparently smooth; L x W: 20 x 14.9 (17-27 x 15-16); L/W ratio: 1.3; M: absent; OR: absent; PG: present; Distinctive features of oocyst: ovoid shape with PG.

Description of sporocysts and sporozoites: Sporocyst shape: ovoid to ellipsoid (?); L x W: unknown, but the drawing suggests them to be about 1/2 the length of the oocyst; SB: absent; SSB: absent; PSB: absent; SR: absent; SP: without a distinct RB, although this was not stated in the orginal description. Distinctive features of sporocyst: lack of a SB< SR and RB.

Prevalence: 1 of 34 (3%).

Sporulation: Unknown.

Prepatent and patent periods: Unknown.

Site of infection: Unknown. Oocysts recovered from feces.

Materials deposited: None.

Remarks: The description of this species is only marginally useful; it is retained as valid only because oocyst measurements and an original line drawing were included. Glebezdin and Kolodenko (1969) said they found this species in hedgehogs in Turkmenia, but the oocysts they measured were 22.6 x 19.8 (17-26 x 14.5-24.5) and sporocysts were 10.1 x 7.0 (9-12 x 6-10) and they did not provide a line drawing or photomicrograph. Thus, the oocysts they measured, likely, were of a different species than E. perardii. Golemansky (1979) also reported finding this species in 1/3 E. europaeus from the Sreburna Reserve in Bulgaria; the oocysts he measured were 24 x 18. Finally, Glebezdin (1985) again reported finding E. perardii in hedgehogs (H. auritus ?) from southeastern Turkmenestan but, this seems unlikely.

References: Yakimoff and Gousseff (1936); Glebezdin and Kolodenko (1969); Golemansky (1979); Glebezdin (1985).