Isospora ubique McQuistion &
Type host: Glyphorhynchus spirurus
rufigularis (Wedge-billed woodcreeper)
Type locality: SOUTH AMERICA:
Ecuador, Provincia de Morona-Santiago ca 5 km SW of
Taisha, 2º 22' S, 77º 30' W, 425 m elev.
Geographic distribution: SOUTH
Description of oocyst: Oocyst shape:
subspheroid; number of walls: 12 wall thickness: ~2.0; wall
characteristics: smooth, colorless outer layer with darker inner layer; L
x W: 23.4 x 21.8 (19-24 x 21-27); L/W ratio: 1.1 (1.0-1.2); M: absent; OR:
absent; PG: present. Distinctive features of oocyst: lack of M &
Description of sporocysts and
sporozoites: Sporocyst shape: ovoid; L x W: 14.8 x 10.1 (9-11 x
14-16); L/W ratio: 1.5 (1.4-1.7); SB: present, nipple-like; SSB: absent;
PSB: absent; SR: present; SR characteristics: coarse granules scattered
among the SP and sometimes loosely clustered; SP: vermiform shaped with an
ovoid, posterior RB and an ovoid, centrally located nucleus.
Distinctive features of sporocyst: a thin membrane appears to
surround the SP and SR.
Prevalence: 18 of 41 (44%).
Sporulation: Exogenous. Oocysts were
stored in 2.5% (w/v) aqueous potassium dichromate solution at
ambient temp. prior to examination.
Prepatent and patent periods:
Site of infection: Unknown.
Oocysts found in feces.
Materials deposited: Phototype, USNPC
#86671 and formalin-preserved oocysts, USNPC #86672.
Remarks: This species has not been
reported since its original description.
Reference: McQuistion & Capparella