Vogtnema asymmetrica n. gen., n. sp. (Nematoda: Cosmocercoidea: Atractidae) parasite of Rhinoclemmys punctularia (Daudin) (Testudines: Geoemydidae) from eastern Amazon, Brazil.

Syst Parasitol

Laboratory of Cellular Biology and Helminthology "Profa. Dra. Reinalda Marisa Lanfredi", Institute of Biological Sciences, Federal University of Pará (UFPa), Av. Augusto Correa 01, Guamá, Belém, Pará, 66075-110, Brazil.

Published: December 2022

AI Article Synopsis

  • Nematodes from the stomach and large intestine of the turtle Rhinoclemmys punctularia in the eastern Amazon have been categorized into a new genus called Vogtnema, which belongs to the Atractidae family.
  • Vogtnema n. gen. is unique in its morphological features, including four V-shaped lips and specific oral structure characteristics that differentiate it from existing genera in the family.
  • The newly identified species, Vogtnema asymmetrica, exhibits distinct precloacal papillae and the study includes an identification key for Atractidae genera.

Article Abstract

Nematodes collected from the stomach and large intestine of Rhinoclemmys punctularia (Daudin) from the eastern Amazon, Brazil, are assigned to a new genus, Vogtnema n. gen., allocated in the family Atractidae (Cosmocerdoidea). Vogtnema n. gen. differs from all other genera of Atractidae based on the combination of the following morphological characters: four lips V-shaped (two subdorsal and two subventral) without sclerotized structures associated, absence of sclerotized formations and/or pieces surrounding the oral opening, oral aperture surrounded by flange internal membranous structures; in males the larger spicule is alate. The type species Vogtnema asymmetrica n. gen., n. sp. has the five precloacal pairs of papillae situated on the right side of the body that are more prominent than those on the left side. We also provide an identification key to the genera of the family Atractidae.

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Source
http://dx.doi.org/10.1007/s11230-022-10065-1DOI Listing

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