Choleoeimeria
Encyclopedia
Choleoeimeria is a genus of protozoan parasites that infect the bilary tracts of reptiles. Morphologically they are similar to the Eimeria
to who they are closely related. The genus was described in 1989 by Paperna and Landsberg.
The infected host cell becomes hypertrophic and emerges above the epithelial surface. This hypertrophy coincides with a drastic depletion of the microvilli. The junction zone along with the underlying cell extends into numerous long and fine membranal out-folds.
Meront: These undergo binary fission.
Microgamont: The differentiating microgamont develops an expanded multilobed body.
Macrogamont: The organelles include type 1 and type 2 wall forming bodies, canaliculi and granular bodies.
Oocyte
: The oocyst wall forms from 4 wall-membranes consolidating over the zygote plasmalemma. The oocysts possess four sporocysts each containing two sporozoites.
These species possess bivalved sporocysts and lack a Stieda body
.
Eimeria
Eimeria is a genus of Apicomplexan parasites that includes various species responsible for the poultry disease coccidiosis. The genus is named for the German zoologist Theodor Eimer...
to who they are closely related. The genus was described in 1989 by Paperna and Landsberg.
General features
The endogenous development of the parasite occurs in the cells of the bile epithelium.The infected host cell becomes hypertrophic and emerges above the epithelial surface. This hypertrophy coincides with a drastic depletion of the microvilli. The junction zone along with the underlying cell extends into numerous long and fine membranal out-folds.
Meront: These undergo binary fission.
Microgamont: The differentiating microgamont develops an expanded multilobed body.
Macrogamont: The organelles include type 1 and type 2 wall forming bodies, canaliculi and granular bodies.
Oocyte
Oocyte
An oocyte, ovocyte, or rarely ocyte, is a female gametocyte or germ cell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is produced in the ovary during female gametogenesis. The female germ cells produce a primordial germ cell which undergoes a mitotic...
: The oocyst wall forms from 4 wall-membranes consolidating over the zygote plasmalemma. The oocysts possess four sporocysts each containing two sporozoites.
These species possess bivalved sporocysts and lack a Stieda body
Stieda body
The Stieda body is an organelle located at the polar region of the sporocyst of some coccidia visible with electron microscopy. It appears as a knob like structure and is a plug occluding a hole in the sporocyst. The breakdown of this body allows excystation of the sporozoites....
.
Host-parasite relations
- Choleoeimeria allogamae - Agama species
- Choleoeimeria allogehyrae - Top-end dtella (Gehyra australis)
- Choleoeimeria amphisbaenae - red worm lizard (Amphisbaena albaAmphisbaena albaAmphisbaena alba, also known as the red worm lizard or less commonly as the white or white-bellied worm lizard, is a species of amphisbaenian in the genus Amphisbaena....
) - Choleoeimeria baltrocki - gold skink (Eumeces schneiderii)
- Choleoeimeria boulii - variegated dtella (Gehyra variegata)
- Choleoeimeria calotesi - blue crested lizard (Calotes mystaceusCalotes mystaceusCalotes mystaceus, the Indo-Chinese Forest Lizard or Blue-crested Lizard, is an agamid lizard found in Southeast Asia.-Description:...
) - Choleoeimeria carinii - teiid lizard (Ameiva ameiva)
- Choleoeimeria heteronotis - Binoe's prickly gecko (Heteronotia binoeiHeteronotia binoeiHeteronotia binoei, commonly known as Binoe's prickly gecko, is a species of lizard endemic to Australia. One of Australia's least habitat-specific geckos, it occurs naturally across much of the country, and has also established in areas where it does not occur naturally, such as urban Perth,...
) - Choleoeimeria hirbayah - veiled chameleon (Chamaeleo calyptratus)
- Choleoeimeria lygosomis - Lygosoma buringi
- Choleoeimeria pachydactyli - Cape thick-toed gecko (Pachydactylus capensis)
- Choleoeimeria riyadhae - sandfish (Scincus scincusScincus scincusThe Sandfish is a species of skink that burrows into the sand and swims through it. It is native to North africa and southwestern asia, but is also kept as a pet elsewhere.-Description:...
) - Choleoeimeria rochalimai - tropical house gecko (Hemidactylus mabouia)
- Choleoeimeria sadlieri - marble-throated skink (Marmorosphax tricolor)
- Choleoeimeria sylvatica - blue throated rainbow skink (Carlia rhomboidalis)
- Choleoeimeria xiangmaii - common house gecko (Hemidactylus frenatus)