Euphlyctis Fitzinger 1843

Duszynski, Donald W., Bolek, Matthew G. & Upton, Steve J., 2007, Coccidia (Apicomplexa: Eimeriidae) of amphibians of the world, Zootaxa 1667 (1667), pp. 1-77 : 27

Host genus Euphlyctis Fitzinger 1843

(4 spp.)

Eimeria cyanophlyctis Chakravarty and Kar 1952 ( Fig. 8)

Type host: Euphlyctis cyanophlyctis (Schneider 1799) , Skipping frog.

Other hosts: None reported to date.

Type locality: ASIA: India, Calcutta suburbs .

Geographic distribution: ASIA: India, Calcutta.

Description of sporulated oocyst: Oocyst shape: ovoidal to ellipsoidal; number of walls: 1; wall thickness: very thin; wall characteristics: transparent; L x W: 19.8–15.4 x 17.6–15.4; L/W ratio: unknown; M and PG: absent; OR: present; OR characteristics: an irregular mass of granules containing a large globule. Distinctive features of oocyst: thin, transparent outer wall and the prominent OR with a large globule embedded in it.

Description of sporocyst and sporozoites: Sporocyst shape: spindle-shaped, with one end tapering more than the other; L x W: 11 x 4.4–6.6; L/W ratio: unknown; SB, SSB, PSB: all absent; SR: absent; SZ: elongate with the anterior end pointed and a N (RB?) present at the broader end. Distinctive features of sporocyst: small size and spindle shape with one end more pointed (SB?) than the other.

Prevalence: Unknown.

Sporulation: Exogenous, 60–75 h ( Mandal 1976).

Prepatent and patent periods: Unknown.

Site of infection: Intestine ( Mandal 1976).

Endogenous stages: Early, uninucleate meronts are spheroidal, ~2.2 wide. These develop into meronts with 8 N. Microgamonts were 4.4 wide with a large number of chromatin granules that transformed into comma-shaped microgametes. Mature macrogamonts were 11 wide with a central N in a matrix of highly granular cytoplasm.

Pathology: None observed to date.

Materials deposited: None.

Remarks: This species was named and briefly described in an abstract by Chakravarty and Kar (1944), but there was no line drawing; thus, initially, it was a species inquirenda. In 1952, the same authors provided a more detailed account of the oocyst, modest information on the endogenous stages, and a line drawing to document their observations. Mandal (1976) added further descriptive information, but the oocysts he measured were 17.9 x 16.7 (15.5–20 x 13.3–15.5) with a L/W ratio of 1.1; these differ in width, and thus, in L/W ratio. The sporocysts Mandal (1976) measured were 11.5 x 5.5 (10.5–12.5 x 4.5–6.5) with a L/W ratio of 2.1, very similar to those in the original description. Mandal (1976) described the oocysts as ovoidal to subspheroidal in shape, yet his drawing shows them to be ovoidal.