New species of Serpinema (Nematoda: Camallanidae) from the scorpion mud turtle Kinosternon scorpioides (Testudines: Kinosternidae) from eastern Amazon, Brazil

Leandro Mauricio Oliveira Silva; Ronald Ferreira Jesus; Ana Nunes Santos; Bianca Nandyara; Yuri Willkens; Jeannie Nascimento Santos; Francisco Tiago Vasconcelos Melo

doi:10.1016/j.ijppaw.2023.07.006

New species of Serpinema (Nematoda: Camallanidae) from the scorpion mud turtle Kinosternon scorpioides (Testudines: Kinosternidae) from eastern Amazon, Brazil

Int J Parasitol Parasites Wildl. 2023 Jul 20:22:6-13. doi: 10.1016/j.ijppaw.2023.07.006. eCollection 2023 Dec.

Authors

Leandro Mauricio Oliveira Silva¹, Ronald Ferreira Jesus¹, Ana Nunes Santos¹, Bianca Nandyara¹, Yuri Willkens¹, Jeannie Nascimento Santos¹, Francisco Tiago Vasconcelos Melo¹

Affiliation

¹ 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.

Abstract

The genus Serpinema Yeh, 1960 allocates parasitic nematodes of freshwater turtles distributed across the Oriental, Neotropical, and Palearctic regions. Five of 10 valid species of the genus Serpinema occur in the Neotropical region, and three have been recorded parasitizing Kinosternon scorpioides Linnaeus, 1766. In the present work, we describe a new species of Serpinema, a gastrointestinal parasite of K. scorpioides from the Brazilian Amazon, using light and scanning electron microscopy. Serpinema pelliculatus n. sp. differs from other species of the genus by the number and distribution of caudal papillae and spicule morphology. The new species is the seventh recorded for the Neotropical region.

Keywords: Camallanidae; Kinosternon scorpioides; Nematodes; Neotropical region; Serpinema; Taxonomy.