Ophiotaenia echidis n. sp. (Cestoda: Proteocephalidae) from the saw-scaled viper, Echis carinatus sochureki Stemmler (Ophidia: Viperidae), one of the world's deadliest snakes, from the United Arab Emirates
| Autor: | Philippe V. Alves, Tomáš Scholz, Alain de Chambrier, Rolf K. Schuster |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Morphology
0301 basic medicine VIPeR 030231 tropical medicine Cestoda United Arab Emirates Zoology Biology 03 medical and health sciences 0302 clinical medicine Viperidae Genus biology.animal Tapeworms Taxonomy Synapomorphy Ophidia Regular Article Snakes 030108 mycology & parasitology biology.organism_classification Onchoproteocephalidea Infectious Diseases Echis carinatus QL1-991 Animal Science and Zoology Parasitology Taxonomy (biology) Phylogenetic relationships |
| Zdroj: | International Journal for Parasitology: Parasites and Wildlife International Journal for Parasitology: Parasites and Wildlife, Vol 14, Iss, Pp 341-354 (2021) |
| ISSN: | 2213-2244 |
| Popis: | Ophiotaenia echidis n. sp. (Cestoda: Proteocephalidae) is described from the intestine of one of the world's deadliest snakes, the saw-scaled viper Echis carinatus sochureki Stemmler (Ophidia: Viperidae) in the United Arab Emirates. The new species differs from other species of the non-monophyletic Ophiotaenia by the position of testes in two longitudinal lines on both sides of the uterus, and by the large size of an embryophore (diameter of 44–55 μm versus less than 40 μm in other species). Phylogenetic reconstructions based on lsrDNA and concatenated lsrDNA + COI datasets place the new species among proteocephalids from unrelated zoogeographical realms but mostly infecting venomous snakes. In all analyses, O. echidis n. sp. exhibited a strongly supported sister relationship with O. lapata Rambeloson, Ranaivoson et de Chambrier, 2012, a parasite of a pseudoxyrhophiid snake endemic to Madagascar. Despite a shared close evolutionary history between these taxa, morphological synapomorphies remain unclear, which impedes the erection of a new genus to accommodate them. A list of the 71 tapeworms of the former, non-monophyletic subfamily Proteocephalinae, parasitising snakes and lizards, including species inquirendae, and the phylogenetically closely related Thaumasioscolex didelphidis from opossum, with selected characteristics, is also provided, together with a checklist of helminth parasites reported from E. carinatus. Graphical abstract Image 1 Highlights • We describe the first proteocephalid cestode from the saw-scaled viper Echis carinatus. • The new ‘Ophiotaenia’ is typified by the position of testes and embryophore size. • The new species phylogenetically clusters with snake cestodes from unrelated regions. • The transmission mechanism remains unknown but likely involves some arthropod prey. |
| Databáze: | OpenAIRE |
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