Orientatractis bowseri n. sp. (Nematoda: Cosmocercoidea: Atractidae) parasite of Peltocephalus dumerilianus (Schweigger) (Testudines: Podocnemididae) from the Brazilian Amazon

Peltocephalus dumerilianus (Schweigger) is a diurnal freshwater turtle widely distributed in the Orinoco and Amazon River basins in Brazil, Colombia, Peru, Ecuador, Venezuela, and French Guiana. During a helminthological survey of freshwater turtles from the Brazilian Amazon, numerous nematodes with...

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Bibliographic Details
Published in:Systematic parasitology 2024-02, Vol.101 (1), p.5-5, Article 5
Main Authors: Jesus, Ronald Ferreira, Santos, Ana Nunes, de Almeida Pereira Oliveira, Tamires, Félix-Silva, Daniely, Melo, Francisco Tiago Vasconcelos
Format: Article
Language:English
Subjects:
Agriculture
Animal Anatomy
Animal Ecology
Animal Systematics/Taxonomy/Biogeography
Animals
Ascaridida
Biomedical and Life Sciences
Brazil
Esophagus
Female
Females
Histology
Life Sciences
Males
Morphology
National parks
Nematoda
Nematodes
Parasites
Peltocephalus dumerilianus
Reptiles & amphibians
River basins
Scanning electron microscopy
Species Specificity
Stomach
Turtles - parasitology
Zoology
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Summary:Peltocephalus dumerilianus (Schweigger) is a diurnal freshwater turtle widely distributed in the Orinoco and Amazon River basins in Brazil, Colombia, Peru, Ecuador, Venezuela, and French Guiana. During a helminthological survey of freshwater turtles from the Brazilian Amazon, numerous nematodes with characteristics of the genus Orientatractis Petter, 1966 were recovered from the stomach of Peltocephalus dumerilianus . These nematodes were different from all congeneric species, and we describe herein. Orientatractis bowseri n. sp. differs from all known species of the genus by having dorsal cuticular projections on the posterior region of the females, distribution of caudal papillae and by having papilla-like ornamentations on the cuticle distributed from the mid-esophagus to the mid portion of the body. This study represents the fourth specie of the genus Orientatractis reported in Brazil, the seventh species of Orientatractis in the Neotropical region, and the third found infecting freshwater turtles in Brazil.
ISSN:0165-5752
1573-5192
DOI:10.1007/s11230-023-10135-y