Studies on the helminth fauna of the Great Nicobar Island

Soota, T. D.; Srivastava, C. B.; Ghosh, R. K.

doi:10.1007/bf03045305

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…The most important differences, however, were in shape and size of the spicules in A. dissimilis Barus [9], seemed to be small drumsticks with distal tips, more than twice the width of A. platyceri, without a marked membranous structure. In addition, the present Ascaridia species bears some differences from A. dissimilis, A. nicobarensis Soota et al [98], A. platyceri Hartwich and Tscherner [38], A. platyceri Mines [66], and A. galli Ramadan and Abou Znada [89] in the position of the caudal papillae, with the latter species having ten papillae, with the first ventral caudal papillae observed The initial tree(s) for heuristic search was automatically obtained by applying the Neighbor-Join and BioNJ algorithms to a matrix of pair distances determined using the maximum compos-ite likelihood approach (MCL) and then selecting the topology with a higher log likelihood value. The tree is drawn to scale, measuring branch lengths in the number of substitutions per site.…”

Section: Discussionmentioning

confidence: 69%

Morphological and Molecular Characteristics of the Gastro-Intestinal Nematode Parasite Ascaridia columbae Infecting the Domestic Pigeon Columba livia domestica in Saudi Arabia

et al. 2019

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Background Parasitism is a complex problem that is often ignored in companion animals, including birds, unless it develops into a severe clinical disorder. The present study was, therefore, aimed to investigate the presence of the gastrointestinal nematode infecting the domestic pigeon and provide a complete morphological description and clarify its taxonomic position through phylogenetic analysis of the ITS1-5.8s-ITS2 rDNA gene region. Materials and MethodsDuring the current study, a total of twenty-six domestic pigeons, Columba livia domestica, were collected and internal organs examined for helminth detection. Using light and scanning electron microscopy, the recovered parasite species are studied. In addition, the selected gene region was obtained and sequenced using appropriate primers that aid in the formation of the phylogenetic dendrogram for the recovered parasite species with others retrieved from GenBank. Results Morphological examination showed that this nematode parasite belongs to the Ascaridiidae family within the genus Ascaridia. The material was assigned to the previously described Ascaridia columbae by providing all the characteristic features as the presence of a mouth opening surrounded by three tri-lobed lips; each lip has two triangular teeth with a spoonlike structure, cephalic papillae and amphidal pores on lips surface, presence of lateral cuticular alae and pre-cloacal sucker, 10 pairs of caudal papillae, and two equal spicules in male worms. The morphological investigations of this species were supplemented by molecular analysis of ITS1-5.8s-ITS2 rDNA gene region. The data showed that the present A. coulmbae is deeply embedded in the Ascaridia genus with a 74-99% sequence similarity to other species in the Chromadorea class. Ascaridiidae appears as monophyly and represented as a sister group to Heterakidae. The ascaridiid species examined belong to the Ascaridia genus and displaced a close relationship with the previously described A. coulmbae (gb| KF147909.1, gb| AJ001509.1, gb| KC905082.1, gb| JQ995321.1, gb| JX624729.1) as putative sister taxa. Conclusion The present study revealed that the species Ascaridia is the first account of this genus as an endoparasite from the domestic pigeon inhabiting Saudi Arabia. Therefore, the combination of morphological and molecular studies helps to identify this species correctly and identified as Ascaridia columbae.

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Section: Discussionmentioning

confidence: 69%

Morphological and Molecular Characteristics of the Gastro-Intestinal Nematode Parasite Ascaridia columbae Infecting the Domestic Pigeon Columba livia domestica in Saudi Arabia

et al. 2019

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Redescription of Tanqua tiara (Nematoda, Gnathostomidae), and associated lesions in the stomach of the Nile monitor lizard (Varanus niloticus)

Gibbons

Keymer²

1991

Zoologica Scripta

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New records of Ascaridia platyceri (Nematoda) in parrots (Psittaciformes)

Kajerová¹,

Baruš²,

Literák³

2004

Vet. Med. - Czech

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ABSTRACT:The aim of the study was to determine the range of species of ascarids in parrots in the Czech Republic. Ascarids were found during post-mortem parasitological examination of 38 psi�aciform birds belonging to 15 different species. All ascarids found were determined as Ascaridia platyceri. Nine bird species were determined as new hosts of this parasite. A. platyceri is a typical ascarid for parrots of Australian origin. The fact that this parasite was found in bird species of African origin demonstrated a possibility of spread of A. platyceri to hosts of different zoogeographical origin. A. platyceri was described in detail from the host Melopsi�acus undulatus and differentiated from other ascarids on the basis of morphological and quantitative traits. The most important differentiating traits included the presence of interlabia in both sexes. In males, the traits important for species identification included the number and location of caudal papillae (a total of 9 to 10 pairs), relatively short spicula and absence of cuticular alae on the spicula, while females featured a conical shape of the tail.

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Studies on the helminth fauna of the Great Nicobar Island

Cited by 4 publications

References 6 publications

Morphological and Molecular Characteristics of the Gastro-Intestinal Nematode Parasite Ascaridia columbae Infecting the Domestic Pigeon Columba livia domestica in Saudi Arabia

Morphological and Molecular Characteristics of the Gastro-Intestinal Nematode Parasite Ascaridia columbae Infecting the Domestic Pigeon Columba livia domestica in Saudi Arabia

Redescription of Tanqua tiara (Nematoda, Gnathostomidae), and associated lesions in the stomach of the Nile monitor lizard (Varanus niloticus)

New records of Ascaridia platyceri (Nematoda) in parrots (Psittaciformes)

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