Some coccidial parasites of the lizard Amphisbaena alba (Reptilia: Amphisbaenia: Amphisbaenidae)

Lainson, Ralph

doi:10.1590/s0074-02762003000700012

Cited by 15 publications

(18 citation statements)

References 5 publications

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“…Choleoeimeria oocysts are typically found in the faeces of their host in the fully sporulated stage (Paperna and Landsberg 1989, Lainson and Paperna 1999, Lainson 2003 and sporulation is classified as endoge-nous (Paperna and Landsberg 1989). However, our experimental trials with C. hirbayah revealed different results.…”

Section: Discussionmentioning

confidence: 99%

New species of Choleoeimeria (Apicomplexa: Eimeriidae) from the veiled chameleon, Chamaeleo calyptratus (Sauria: Chamaeleonidae), with taxonomic revision of eimerian coccidia from chameleons

Sloboda¹,

Modrý²

2006

FOLIA PARASIT

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Abstract. Coprological examination of 71 samples from a breeding colony of veiled chameleons, Chamaeleo calyptratus Duméril et Duméril, 1851, revealed a presence of two species of coccidia. In 100% of the samples examined, oocysts of Isospora jaracimrmani Modrý et Koudela, 1995 were detected. A new coccidian species, Choleoeimeria hirbayah sp. n., was discovered in 32.4% of samples from the colony. Its oocysts are tetrasporocystic, cylindrical, 28.3 (25-30) × 14.8 (13.5-17.5) µm, with smooth, bilayered, ~1 µm thick wall. Sporocysts are dizoic, ovoidal to ellipsoidal, 10.1 (9-11) × 6.9 (6-7.5) µm, sporocyst wall is composed of two plates joined by a meridional suture. Endogenous development is confined to the epithelium of the gall bladder, with infected cells being typically displaced from the epithelium layer towards lumen. A taxonomic revision of tetrasporocystic coccidia in the Chamaeleonidae is provided.

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Section: Discussionmentioning

confidence: 99%

New species of Choleoeimeria (Apicomplexa: Eimeriidae) from the veiled chameleon, Chamaeleo calyptratus (Sauria: Chamaeleonidae), with taxonomic revision of eimerian coccidia from chameleons

Sloboda¹,

Modrý²

2006

FOLIA PARASIT

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“…The current study focused on the elucidation of the endogenous stages of these parasites as a fundamental tool in their taxonomic allocation as suggested by Lainson (2003).…”

Section: Discussionmentioning

confidence: 99%

“…Oocysts of Choleoeimeria are typically shed in fully sporulated form in the faeces of their hosts (Paperna and Landsberg 1989, Lainson and Paperna 1999and Lainson 2003 and are classified as having endogenous sporulation (Paperna and Landsberg 1989).…”

Section: Discussionmentioning

confidence: 99%

Endogenous stages of Choleoeimeria baltrocki (Daszak et Ball, 1991) n. comb. infecting the gall bladder of gold skink, Eumeces schneiderii Daudin, 1802 from Egypt

Abdel‐Baki

El-Fayomi

Sakran

et al. 2009

Acta Parasitologica

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Examination of 98 gold skink, Eumeces schneiderii Daudin, 1802 from Alexandria and Marsa-matroh Governorates, Egypt revealed oocysts of Choleoeimeria baltrocki (Daszak et Ball, 1991) n. comb. in the gall bladder and faeces. The prevalence of the infection was 40.8%. Sporulated oocysts were found in the faeces and the gall bladder contents. Sporulated oocysts were tetrasporocystic, cylindrical, reaching a mean of 38.7 (36-42) × 19.9 (17-25) µm with bilayered smooth and colourless wall. The dizoic sporocysts were subspherical and measuring 10.8 (9.5-13) × 9.3 (8-10.5) µm with a large globular sporocyst residuum. Sporocyst wall was bilayered joined by meridional suture. Sporozoites were crescent-shaped, blunt at one end and slightly tapered at the other. Endogenous stages (meronts, gamonts, gametes and young oocysts) were confined to the gall bladder epithelium and the infected cells were hypertrophied. Based on the morphological features of the exogenous stages and endogenous development of the present parasite, its generic affiliation was revised and placed into the genus Choleoeimeria.

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“…That human giardiasis is a zoonosis has still to be firmly established, but frequent reports of giardiasis among persons drinking water from streams in areas far from human habitation has led to the suspicion that wild animals may be a source of infection, particularly beavers, muskrats and other rodents (Dykes et al, 1990). Pellérdy (1974), Paperna (1999 and Lainson (2003) have discussed the enigmatic nature of the taxon Globidium Flesch, 1883. In mammals, globidia have been described in the lamina propria of the digestive tract of armadillos, marsupials, horses, sheep and goats.…”

Section: Other Parasitesmentioning

confidence: 99%

“…There are rare reports of their occurrence in reptiles: in a snake (Harant & Cazal, 1934), a gekkonid lizard (Paperna, 1999) and an amphisbaenid lizard (Lainson, 2003). The most popular theory is that they represent giant meronts of known intestinal coccidians of these hosts, but this is still open to doubt.…”

Section: Other Parasitesmentioning

confidence: 99%

Parasites of the squirrelSciurus spadiceus(Rodentia: Sciuridae) from Amazonian Brasil, with particular reference toEimeria damnosan. sp. (Apicomplexa: Eimeriidae)

2005

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Summary :A description is given of the mature oocysts and endogenous stages of Eimeria damnosa n. sp. from the small intestine of the red squirrel, Sciurus spadiceus, from the State of Acre, north Brazil. Ten of 12 animals examined were infected. Oocysts ovoid to ellipsoidal, occasionally cylindrical but not with parallel sides, 30.2 × 20.0 µm (18.0 × 15.0-40.2 × 30.0), shapeindex (ratio length/width) 1.5 (1.3-1.8), n = 40. Oocyst wall smooth, colourless, with no micropyle, apparently of a single layer measuring approximately 1.0-1.5 µm thick. No oocyst residuum, but approximately 50 % of the oocysts with a single spherical, ovoid or dumbbell-shaped polar body. Sporocysts pear-shaped, 15.0 × 8.0 µm (11.0 × 6.0-16.0 × 8.0), shape index 1.9 (1.8-2.0), n = 33. Stieda body, if it merits this name, appears only as a slight thickening of the sporocyst wall at the more pointed extremity. Endogenous stages intracytoplasmic in the epithelial cells of the duodenum and throughout the ileum, above the host cell nucleus. Sporulation frequently completed in the lumen of the intestine, but most oocysts mature outside the host at some time within 24 hours. Massive infections may result in extensive desquamation of the gut epithelium, and sometimes in the death of the animal. In addition to this coccidian, one squirrel showed abundant trophozoites of a Giardia sp., in the ileum. The liver of two others contained developing and mature meronts, producing large numbers of slender merozoites, and other cyst-like bodies containing a small number of large zoites (sporozoites?). No parasites were detected in the blood of any of the squirrels that could be associated with this unidentified protozoan. Histological sections of the ileum of one squirrel revealed a globidium-like parasite in the lamina propria: it contained a very large number of slender, curved zoites. Three animals were with a sheathed microfilaria in the peripheral blood and liver smears. Finally, a Trypanosoma cruzi-like trypanosome was isolated from the blood of one squirrel and a T. lewisi-like trypanosome from two others. Résumé : LES PARASITES

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Some coccidial parasites of the lizard Amphisbaena alba (Reptilia: Amphisbaenia: Amphisbaenidae)

Abstract: Five parasites are described in the lizard

Cited by 15 publications

References 5 publications

New species of Choleoeimeria (Apicomplexa: Eimeriidae) from the veiled chameleon, Chamaeleo calyptratus (Sauria: Chamaeleonidae), with taxonomic revision of eimerian coccidia from chameleons

New species of Choleoeimeria (Apicomplexa: Eimeriidae) from the veiled chameleon, Chamaeleo calyptratus (Sauria: Chamaeleonidae), with taxonomic revision of eimerian coccidia from chameleons

Endogenous stages of Choleoeimeria baltrocki (Daszak et Ball, 1991) n. comb. infecting the gall bladder of gold skink, Eumeces schneiderii Daudin, 1802 from Egypt

Parasites of the squirrelSciurus spadiceus(Rodentia: Sciuridae) from Amazonian Brasil, with particular reference toEimeria damnosan. sp. (Apicomplexa: Eimeriidae)

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