Eimeria modesta Van Peenan, Ryan, and McTintyre,
Type host: Tupaia glis modesta (J. Allen,
Other hosts: None reported to date.
Type locality: ASIA: Vietnam, Quang Nam Province,
1.3 km N and 4.2 km S of Mt
Sontra, (16º E 07' N, 108º E 15' E, elev. 500 m).
Geographic distribution: ASIA: Vietnam, Quang Nam
Province, 1.3 km N and 4.2 km
Mt. Sontra, (16º E 07' N, 108º E 15' E, elev. 500 m).
Description of oocyst: Oocyst shape: subspheroid to
bluntly ellipsoid; number of
walls: 2; wall thickness: outer 1.5-2, inner 1; wall characteristics: outer is
knobby, brownish-yellow, thick and striated (bright field illumination); inner is
yellow, refractile, and striated; L x W: 20.6 x 19.6 (18-24 x 16-23); L/W ratio:
1.05 (1.0-1.5); M: absent; OR: present; OR characteristics: eccentric mass composed
of several large granules; OR L x W: 3-5; PG: absent. Distinctive features of
oocyst: differs from those of E. ferruginea in shape, by being smaller, and having
an OR that is granular rather than a single globule (Colley, 1970).
Description of sporocysts and sporozoites:
Sporocyst shape: ovoid; L x W: 11.1 x
(8-14 x 6-10); L/W ratio: 1.5; SB: large, ~1/2 the width of sporocyst (in line
drawing); SSB: absent; PSB: absent; SR: present; SR characteristics: compact mass of
numerous coarse granules; SP: comma-shaped, about 6 x 3, without RB. Distinctive
features of sporocyst: distinctive large, rounded SB.
Prevalence: 4/10 (40%).
Sporulation: Exogenous. Oocysts sporulated within 5
days in 3% aqueous potassium
dichromate solution at 22-42ºC.
Prepatent and patent periods: Unknown.
Site of infection: Both meronts and gamonts were
found in endothelial cells in
terminal ileum, anterior to ileo-cecal valve. Meronts had only 8 merozoites.
Developing parasites were seen on the luminal side of host endothelial cells
displacing the N toward the basement membrane.
Material deposited: Apparently, the symbiotype host
is in the U.S. National
(No. 356389; Collector's No. PFR 263). Slides of terminal ileum showing endogenous
stages are deposited in the U.S. National Parasite Collection (USNPC), Beltsville,
Maryland, USA, Nos. 23974, 23975.
Remarks: Colley (1970) compared E. modesta
and E. ferruginea and believed they were
Reference: Colley (1970); Van Peenen et al. (1967).