Morphological description and phylogenetic assessment of 28S rRNA for Thelandros chalcidiae sp. nov. from Chalcides ocellatus

Abdel-Ghaffar, Fathy; Varjabedian, Kohar Garo; Quraishy, Saleh Al; Abdel‐Gaber, Rewaida; Fol, Mona; Talal, Noha

doi:10.1007/s11033-020-05412-8

Cited by 4 publications

(3 citation statements)

References 60 publications

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“…On the other hand, P. galloti males had wider alae and longer oesophagus than representatives of Parapharyngodon , highlighting the difficulties of assigning these species to the appropriate genus without molecular data. Abdel-Ghaffar et al (2020) recently described a new species as Thelandros chalcidiae from Chalcides ocellatus in Egypt. Based on 28S rRNA sequence data, they showed it was closely related to P. galloti (still considered as a member of Thelandros ) and Parapharyngodon micipsae .…”

Section: Discussionmentioning

confidence: 99%

A phylogenetic assessment of nematodes (Oxyuroidea: Pharyngodonidae) infecting Moroccan lizards

et al. 2022

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Summary Molecular tools can be used to estimate the phylogeny of species and to identify cryptic diversity, but their use for parasites has lagged behind that of free-ranging organisms. As an example, in North Africa there is minimal molecular data available for helminth parasites of lizards. In this work we used two molecular markers (the nuclear 18S rRNA and the mitochondrial Cytochrome c Oxidase subunit 1) to investigate the diversity of nematodes of the family Pharyngodonidae parasitizing three genera of lizards from Morocco (Chalcides, Quedenfeldtia and Tarentola) and to explore their co-evolutionary history. Morphological assessments indicated that members of three genera were present: Spauligodon, Thelandros, and Parapharyngodon. Phylogenetic analysis of 18S rRNA sequences indicated the monophyly of the genus Spauligodon, and that some lineages could be distinguished, including Spauligodon auziensis from the host species Tarentola mauritanica, and another unnamed lineage from hosts of the genus Chalcides. However, with this slow-evolving marker some species could not be distinguished. The genus Thelandros was not monophyletic, although relationships were not strongly supported. Analysis of the faster evolving mitochondrial marker clearly separated various species of Spauligodon, as well as distinct unnamed lineages identified in the host genus Chalcides and the host Quedenfeldtia moerens.

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Section: Discussionmentioning

confidence: 99%

A phylogenetic assessment of nematodes (Oxyuroidea: Pharyngodonidae) infecting Moroccan lizards

et al. 2022

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“…Some of freshly recovered worms were fixed in 3% buffered glutaraldehyde for at least 2 h, and the series of subsequent steps for samples preparations were done according to Abdel‐Ghaffar et al (2020). Scanning photographs were taken using a JEOL JSM‐6060LV SEM at 10 kV.…”

Section: Methodsmentioning

confidence: 99%

“…Lizards are good models for parasitological studies once they exhibit high diversity in feeding habits, behaviors, and plasticity of habitat occupation (Abdel‐Ghaffar et al, 2020; Aho, 1990). Following this sense, previous checklists have been demonstrated the high biodiversity potential of parasitic nematodes that accompanies the diversity trends of such hosts (Ávila & Silva, 2010; Dobson et al, 2008; Martin & Roca, 2004; Sharpilo et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Pharyngodon mamillatus (Nematoda: Pharyngodonidae) in the ocellated skink Chalcides ocellatus (Squamata: Scincidae) from Egypt: Light and scanning electron microscopic studies

Abdel-Ghaffar

Varjabedian

Fol

et al. 2022

Microscopy Res & Technique

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Twenty-one Pharyngodon mamillatus were recovered from the large intestine of 4 out of 12 ocellated skink Chalcides ocellatus collected from the South Sinai desert, Egypt. The prevalence of infection was 33.33% (intensity 2-4). The recovered pharyngodonid was re-described based on light and scanning electron microscopy.According to the morphology, it was characterized by regular transverse annulations extending from the posterior margin of the lips to the level of the anus, triangular mouth opening was surrounded by three large bilobed lips possessing three papillae, oval-shaped excretory pore, slit-like vulva opening, and slit-like anal ventral opening at the posterior end which terminates with a tail filament. Here, the morphometric measurements of adult female P. mamillatus were given in this study. It has no intraspecific morphological variations from the previously described P. mamillatus, but it appeared with small range on biometric features. These variations may be accounted by host/environment attributes since they exhibit wide host and geographical spectra. The present study was applied for detailed morphological knowledge of the recovered P. mamillatus for strengthening their taxonomic validity. Highlights• The Pharyngodon mamillatus naturally parasite of the intestinal region of Chalcides ocellatus.• The present study clarifies the morphological key for the description of P. mamillatus.

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New species of Parapharyngodon (Nematoda: Pharyngodonidae) parasite of Osteocephalus taurinus (Anura: Hylidae) from Northern Brazilian Amazon Region

et al. 2022

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Morphological description and phylogenetic assessment of 28S rRNA for Thelandros chalcidiae sp. nov. from Chalcides ocellatus

Cited by 4 publications

References 60 publications

A phylogenetic assessment of nematodes (Oxyuroidea: Pharyngodonidae) infecting Moroccan lizards

A phylogenetic assessment of nematodes (Oxyuroidea: Pharyngodonidae) infecting Moroccan lizards

Pharyngodon mamillatus (Nematoda: Pharyngodonidae) in the ocellated skink Chalcides ocellatus (Squamata: Scincidae) from Egypt: Light and scanning electron microscopic studies

New species of Parapharyngodon (Nematoda: Pharyngodonidae) parasite of Osteocephalus taurinus (Anura: Hylidae) from Northern Brazilian Amazon Region

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