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Start Over Creator Koudela, Břetislav Subject Reptilia

1. Caryospora maxima sp. n. (Apicomplexa: Eimeriidae), new coccidium from Forskal’s sand snake, Psammophis schokari (Serpentes: Colubridae) from lava desert of Jordan

Creator:
Modrý, David, Koudela, Břetislav, Al-Oran, Ratib M., and Amr, Zuhair S.
Format:
print
Type:
model:internalpart and TEXT
Subject:
Apicomplexa, Eimeriidae, Caryospora maxima, Reptilia, Colubridae, Psammophis schokari, and Jordan
Language:
English
Description:
A new coccidian parasite of the genus Caryospora Léger, 1904 is described from the colubrid snake Psammophis schokari (Forskâl, 1775). Oocysts of Caryospora maxima sp. n. are spherical or subspherical, 43.0 (40.0-46.0) X 42.1 (40.0-44.0) pm, with smooth and bilayered oocyst wall ca. 2.0 μιη thick. A micropyle, oocyst residuum and polar granule are absent. Sporocysls are broadly ellipsoidal, 21.3 (21.0-22.0) x 16.3 (16.0-17.0) μιη, with smooth, colourless and unilayered sporocyst wall. Sticda and substieda bodies are present. Sporocyst residuum is present as compact mass of granules lying centrally between sporozoites. Sporozoitcs arc elongate, arranged head to tail within sporocyst. Caryospora maxima represents the first coccidian species described from Psammophis schokari.
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2. Caryospora varaniornati sp. n. (Apicomplexa: Eimeriidae) in the Nile monitor, Varanus (Polydaedalus) niloticus species complex

Creator:
Modrý, David, Šlapeta, Jan R., Knotek, Zdeněk, and Koudela, Břetislav
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Caryospora varaniornati, Eimeriidae, coccidia, Varanus niloticus, Varanus ornatus, Varanidae, and Reptilia
Language:
English
Description:
Parasitological examination of two ornate Nile monitors Varanus ornatus (Daudin, 1803) imported from Benin revealed the presence of a new species of Caryospora. Oocysts of Caryospora varaniornati sp. n. are spherical to slightly subspherical, 12.0 (11-12.5) × 11.5 (11-12) µm, without a micropyle and oocyst residuum, and occasionally possessing one small polar granule. Sporocysts are broadly ellipsoidal, 8.8 (8.5-9.5) × 6.7 (6.5-7) µm; a lentil-like Stieda body is present, ca. 0.5 × 1 µm; substieda body not visible. Experimental infection of a closely related host, Varanus niloticus (L.), did not lead to the oocyst excretion despite the fact that one of the experimentally inoculated monitors was immunosuppressed by dexamethasone. Histological examination did not reveal stages of coccidian development. Therefore, it is possible that C. varaniornati is strictly host specific.
Rights:
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3. Description of Eimeria arabukosokokensis sp. n. (Apicomplexa: Eimeriidae) from Telescopus semiannulatus (Serpentes: Colubridae) with notes on eimerian coccidia from snakes of Eastern Kenya

Creator:
Šlapeta, Jan R., Modrý, David, Ashe, James, and Koudela, Břetislav
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Coccidia, Apicomplexa, Caryospora, Eimeria, morphology, taxonomy, Reptilia, and Serpentes
Language:
English
Description:
Parasitological examination of faeces of 26 snakes kept in Bio-Ken Snake Farm, Watamu, Kenya revealed new species of Eimeria Schneider, 1875 in Telescopus semiannulatus Smith, 1849. Oocysts of Eimeria arabukosokokensis sp. n. are cylindrical 26.8 (25-29) × 15.1 (14-16) µm with smooth, bilayered oocyst wall and a single polar granule. The broadly ellipsoidal sporocysts average 9.3 (8.5-10) × 7.1 (6.5-7.5) µm and possess single-layered wall composed of two plates joined by longitudinal suture. Caryospora cf. regentensis Daszak et Ball, 2001 is reported from Dendroaspis angusticeps (Smith, 1849) and two additional forms of Caryospora Léger, 1904 are reported and morphologically characterised from a single specimen of Psammophis orientalis Broadley, 1977. Systematic status of Caryospora spp. in sub-Saharan Psammophis Boie, 1827 is discusses and all species reported by various authors to date are suggested to be treated as species inquirendae until more detailed data on these parasites and their hosts are available.
Rights:
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4. Extraintestinal stages of coccidia in liver of Schneider’s skink Eumeces schneideri (Sauria: Scincidae) from Northern Egypt

Creator:
Koudela, Břetislav and Modrý, David
Format:
print
Type:
model:internalpart and TEXT
Subject:
extraintestinal tissue cysts, liver, sporozoite, crystalloid body, Isospora, and Reptilia
Language:
English
Description:
An extrainlestinal coccidian parasite was identified in Schneider’s skinks Eumeces schneideri Daudin, 1802. Numerous tissue cysts were found in melanomacrophage aggregations in the liver of six of ten examined skinks. No tissue cysts were found in other tissues. Tissue cysts were 22-26 x 9-13 pm and contained a single sporozoite. Sporozoitcs were 10-13 x 2-4 pm, and contained a single nucleus, homogeneous inclusion and PAS positive granules, and were surrounded by PAS negative, 1.5-3.0 pm thick cyst wall. Transmission electron microscopy revealed that the tissue cyst wall was composed of granular material and the sporozoites contained crystalloid body with regular arrangements of units. Appearance of tissue cyst and structure of crystalloid body indicate that Schneider's skinks represent a paratenic host for non-determined Isospora species.
Rights:
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5. Intestinal microsporidiosis in African skink Mabuya perrotetii

Creator:
Koudela, Břetislav, Didier, Elisabeth S., Rodgers, Linda B., and Modrý, David
Format:
print
Type:
model:internalpart and TEXT
Subject:
microsporidia, Reptilia, Encephalitozoon, electron microscopy, PCR-RFLP, and heteroduplex mobility
Language:
English
Description:
Intestinal microsporidiosis was documented by detecting abundant slightly curved spores (2.9 x 1.2 pm) in the faeces of five of twelve skinks Mabuya perrotetii Duméril et Bibron, 1839 that originated from Ghana. Clinically, the microsporidiosis was characterized by decreased appetite, diarrhea, and weight loss. Histopathological changes consisted of villous atrophy, blunting of mucosa and flattening of individual epithelial cells in the large intestine. The ultrastructure of microsporidian spores was consistent with an Encephalitozoon species. The PCR-RFLP assay and the heleroduplex mobility shift analyses were used to verify that the skink microsporidian is a species of the genus Encephalitozoon Levaditi, Nicolau et Schoen, 1923 and indicate that this microsporidian is not E. hellem, E. intestinalis or a strain of E. cuniculi. The microsporidia in African skink represent an Encephalitozoon species morphologically identical to Encephalitozoon lacerine Canning, 1981.
Rights:
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6. New species of Cryptosporidium (Apicomplexa: Cryptosporidiidae) from lizards

Creator:
Koudela, Břetislav and Modrý, David
Format:
print
Type:
model:internalpart and TEXT
Subject:
Reptilia, Sauria, Cryptosporidium saurophilum sp, n., and transmission studies
Language:
English
Description:
A new Cryptosporidium species, C. saurophilum, is described from Schneider’s skinks Eumeces schneidert Daudin, 1802. Oocysts were fully sporulated in fresh faeces and measured 5.0 x 4.7 pm (4.4-5.6 x 4.2-5.2 pm). The new species differs from C. serpentis Levine, 1980 by having smaller oocysts, developing in a different location of intestine, and by the inability to infect snakes.
Rights:
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