Eimeria scalopi Ford and Duszynski, 1988
Type host: Scalopus aquaticus (Linnaeus, 1758), Eastern American mole.
Other hosts: None reported to date.
Type locality: NORTH AMERICA: USA, Texas, Motley Co.
Geographic distribution: NORTH AMERICA: USA, Texas.
Description of oocyst:
Oocyst shape: spheroid to subspheroid;
number of walls: 2;
wall thickness: ~1.0;
wall characteristics: both layers smooth and of equal thickness;
L x W: 13.6 x 12.6 (11-17 x 11-15);
L/W ratio: 1.1 (1.0-1.2);
OR characteristics: an irregular mass of small granules;
Distinctive features of oocyst: smooth outer wall with distinct OR and sporocysts tightly packed into oocyst.
Description of sporocysts and sporozoites:
Sporocyst shape: lemon-shaped;
L x W: 8.7 x 5.5 (7-10 x 4-7);
L/W ratio: 1.6 (1.2-2.0);
SR characteristics: small granules either concentrated or dispersed;
SP: with a posterior RB.
Distinctive features of sporocyst: small size and lack of SSB.
Prevalence: 6/13 (46%).
Sporulation: Exogenous. Oocysts sporulated in 7-10 days in 2.5% aqueous (w/v) potassium dichromate solution at 23 C.
Prepatent and patent periods: Unknown.
Site of infection: Unknown. Oocysts recovered from feces and intestinal contents.
Materials deposited: Skin, skull, skeleton and tissues of the symbiotype host are preserved in the Mammal Division of the Museum of SW Biology, UNM: MSB No.42352 (NK 2001, female), J. Haydock #149, 19 May, 1980. Photosyntypes in the USNPC No. 86001.
Remarks: Oocysts of this species resemble those of E. bentongi, E. madagascarensis, and E. milleri. They differ from those of E. bentongi by having 2 layers in the oocyst wall that, combined, are thinner than the 1-layered wall of E. bentongi (1.0 vs 1.5); they also have a granular OR, which is absent in E. bentongi, and lack a small PG present in E. bentongi. They differ from theose of E. madagascarensis by having a bi-layered wall ~1.0 vs a 1-layered wall <0.5, by having a granular OR and SP with RBs that E. madagascarensis lacks; they also lack a small PG that is present in E. madagascarensis. They differ from those of E. milleri by the shape of the oocyst (spheroid-subspheroid vs distinctly ovoid) and by having an OR that E. milleri lacks.
References: Ford and Duszynski (1988).