Nematodes Community Infecting Chalcides Ocellatus Lizard and Their Relation to Some Environmental and Biological Factors

Hassan, Ehssan A.

doi:10.12816/0031646

Cited by 2 publications

(4 citation statements)

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“…Also, others reported some species from reptilian hosts, C. zugi Bursey et al (2005) isolated from large intestine of ring-tailed gecko Cyrtodactylus louisiadensis in Papua, New Guinea; C. leytensis Bursey et al (2015) from large intestine of bent-toed gecko Cyrtodactylus gubaot in Philippines. Hassan (2016) in Egypt detected C. vrcibradici from Chalicides ocellatus that was similar to the present nematode in host type and infection site.…”

Section: Introductionsupporting

confidence: 76%

“…By comparing the present parasite with other species of same genus, but from different hosts, the only morphologically related species was C. vrcibradici (Bursey and Goldberg, 2004). Also, this genus was closely related to C. vrcibradici (Hassan, 2016) as sharing the same host and geographic area.…”

Section: Introductionmentioning

confidence: 71%

“…Species of the genus Cosmocerca Diesing (1861) are found among the parasitofauna in the stomach of amphibians (Martinez and Maggenti, 1989;Moravec and Bursey et al, 2015;Sou and Nandi 2015) and occasionally reptiles (Baker, 1987;González and Hamann, 2008;Hassan, 2016). Also, genus Physaloptera Rudolphi (1819) is parasite in the stomach of reptiles, birds, mammals and occasionally amphibians (Yamaguti, 1961).…”

Section: Introductionmentioning

confidence: 99%

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Morphological Description of Cosmocerca Vrcibradici (Cosmocercidae Railliet, 1916) and Physaloptera Bainae (Physalopteridae, Leiper 1908) in Chalcides Ocellatus From Egypt: A Light and Scanning Electron Microscopic Study

Fol

Mostafa

2021

Journal of the Egyptian Society of Parasitology

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Cosmocerca vrcibradici (Cosmocercidae) and Physaloptera bainae (Physalopteridae) are two intestinal nematodes obtained from a scincid lizard, Chalcides ocellatus (Scincidae). The study gave the first morphological description of C. vrcibradici and P. bainae using light and scanning electron microscopy. A cosmocercid nematode C. vrcibradici assigned to genus Cosmocera, possessing small mouth surrounded by three lips provided with four sub-median cephalic papillae and each one has a pair of lateral amphids. Male was 2.4-2.7 (2.6±0.1) mm long; maximum width 0.2-0.23 (0.21±0.01) can be easily distinguished from its congeners by the presence of lateral alae and small well sclerotized gubernaculum and ended conically with a tapered tail. Females measured 1.9 3.7 (2.8±0.1) mm in length & 0.24 0.42 (0.38±0.01) mm in width ended with a tapered tail. Besides, all recovered females were gravid filled with large number of embryonated eggs. Physaloptera bainae assigned to genus Physaloptera characterized by long robust body measured 3.21-5.47 (4.35±0.10) long and 0.58-0.65 (0.62±0.01) in maximum width, oral openings with two semicircular pseudolabia, cuticle dilatation at anterior ed tail. Only recovered parasites were females with didelphic uterus the main characteristics feature among between species. These observations have allowed a more detailed description of both nematode taxonomy and classification.

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Section: Introductionsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

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Morphological Description of Cosmocerca Vrcibradici (Cosmocercidae Railliet, 1916) and Physaloptera Bainae (Physalopteridae, Leiper 1908) in Chalcides Ocellatus From Egypt: A Light and Scanning Electron Microscopic Study

Fol

Mostafa

2021

Journal of the Egyptian Society of Parasitology

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“…However, in several geographical regions both genera are found cohabiting the same host (e.g. Martin and Roca, 2004, 2005; Roca et al ., 2005; Carretero et al , 2006; Hassan, 2016). Morphologically, both genera exhibit differences in the posterior end of the body and egg shape upon egg deposition (Adamson, 1981; Bursey and Goldberg, 2005).…”

Section: Introductionmentioning

confidence: 99%

The importance of integrative approaches in nematode taxonomy: the validity of Parapharyngodon and Thelandros as distinct genera

Sousa¹,

Jorge

Carretero³

et al. 2018

J. Helminthol.

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Despite the advances of molecular tools, new nematode species are still described mainly based on morphological characters. Parapharyngodon and Thelandros are two genera of oxyurids with unclear related taxonomic histories. Here we use morphological characters (linear measurements and categorical variables) and genetic information (18S rRNA, 28S rRNA and COI partial gene sequences) to confirm the relationships between representatives of these two genera and to determine whether they can be discriminated morphologically. Genetic results confirm the existence of two main clades, mostly congruent with Parapharyngodon and Thelandros genera but with several discordances. Thelandros is polyphyletic, with two of the species analysed (T. filiformis and T. tinerfensis) being part of the Thelandros clade, but with a third one (T. galloti) falling within the Parapharyngodon clade. Regarding the Parapharyngodon clade, P. cubensis, P. scleratus and Parapharyngodon sp. from Mexico form congruent lineages, while most P. echinatus samples cluster in another group, with one exception. Interestingly, P. micipsae samples are scattered across the Parapharyngodon clade, suggesting that they were misidentified or rather represent alternative morphotypes of other species. Morphological analysis identified the length of the tail, number of caudal papillae, position of the nerve ring, presence of caudal alae and length of the lateral alae as reliable characters to distinguish between Parapharyngodon and Thelandros genetic clades. Our study highlights the current taxonomic inconsistency in these groups, mainly derived from the exclusive use of morphological data. As such, we advocate for the routine implementation of molecular data in nematode taxonomic studies.

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Nematodes Community Infecting Chalcides Ocellatus Lizard and Their Relation to Some Environmental and Biological Factors

Cited by 2 publications

References 0 publications

Morphological Description of Cosmocerca Vrcibradici (Cosmocercidae Railliet, 1916) and Physaloptera Bainae (Physalopteridae, Leiper 1908) in Chalcides Ocellatus From Egypt: A Light and Scanning Electron Microscopic Study

Morphological Description of Cosmocerca Vrcibradici (Cosmocercidae Railliet, 1916) and Physaloptera Bainae (Physalopteridae, Leiper 1908) in Chalcides Ocellatus From Egypt: A Light and Scanning Electron Microscopic Study

The importance of integrative approaches in nematode taxonomy: the validity of Parapharyngodon and Thelandros as distinct genera

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