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Oxysomatium brevispiculum n. sp. (Nematoda: Cosmocercidae) from Amphisbaena alba Linnaeus (Squamata, Amphisbaenidae) in the Cerrado Biome from Brazil

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Abstract

In the present study, we describe Oxysomatium brevispiculum n. sp. (Ascaridida: Cosmocercidae) parasitizing Amphisbaena alba Linnaeus (Squamata: Amphisbaenidae) in the municipality of Uberlândia, Cerrado Biome, Minas Gerais, Brazil. Oxysomatium brevispiculum n. sp. differs from its congeners by having shorter spicules and by the number and arrangement of caudal papillae. The males of the new species have a precloacal unpaired papilla and can be easily distinguished from O. caucasicum in which this morphological trait is absent. Oxysomatium brevispiculum n. sp. differs from the other three species of the genus by the number and arrangement of caudal papillae, with 13 pairs + 1 unpaired precloacal papilla, arrangement 8+1:2:3, while O. brevicaudatum has 14–16 pairs +1 unpaired papilla, and 7–9+1:1:6 arrangement, O. petrolinensis has 16 pairs +1 unpaired papilla, and 8+1:1:7 arrangement, and O. dollfusi with 15–16 pairs +1 unpaired papilla, and 8–9+1:1:6 arrangement. Oxysomatium brevispiculum n. sp. is the fifth species of this genus, the second species in a Neotropical host, and the first species of this genus described in amphisbaenid hosts. In addition, the present study provides an identification key for the species of this genus.

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Acknowledgements

We thank Dr. Bernadette Maria de Sousa for providing the dead host from which we collected the nematodes described here. This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001. Paula A. Gonçalves was supported by a Doctoral Fellowship from CAPES. Fabiano M. Vieira was supported by a Research Fellowship from Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco (FACEPE), State of Pernambuco, Brazil (Process: BFP-0206-2.13/20).

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Authors and Affiliations

  1. Laboratório de Helmintos Parasitos de Vertebrados, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Av. Brasil 4365, Rio de Janeiro, RJ, CEP 21040-900, Brazil

    Paula Araujo Gonçalves & Luís Cláudio Muniz-Pereira

  2. Programa de Pós-graduação em Biodiversidade e Saúde (PPGBS), IOC, FIOCRUZ, Av. Brasil 4365, Rio de Janeiro, RJ, CEP 21040-900, Brazil

    Paula Araujo Gonçalves & Luís Cláudio Muniz-Pereira

  3. Universidade Federal do Vale do São Francisco (UNIVASF), Rodovia BR-407, KM 12 Lote 543 S/n Projeto de Irrigação Nilo Coelho, Petrolina, 56300-000, Brazil

    Fabiano Matos Vieira & Gabriela Felix-Nascimento

  4. Laboratório de Anatomia dos Animais Domésticos e Silvestres, Universidade Federal do Vale do São Francisco (Univasf), Rodovia BR 407, km 12 – Lote 543 –Projeto de Irrigação Senador Nilo Coelho, s/nº “C1”, Petrolina, PE, CEP 56300-990, Brazil

    Gabriela Felix-Nascimento

  5. Laboratório de Taxonomia e Ecologia de Helmintos - Odile Bain, Universidade Federal de Juiz de Fora (UFJF), Rua José Lourenço Kelmer, s/n, Campus Universitário, Juiz de Fora, MG, CEP 36036-900, Brazil

    Sueli de Souza Lima

Authors
  1. Paula Araujo Gonçalves
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  2. Fabiano Matos Vieira
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  3. Gabriela Felix-Nascimento
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  4. Sueli de Souza Lima
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  5. Luís Cláudio Muniz-Pereira
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Contributions

PAG, FMV and LCM-P contributed substantially to study conception and design. All authors contributed to data acquisition. FMV and SSL collected and prepared parasites for taxonomic studies. PAG, FMV, GF-N and LCM-P analyzed and interpreted the data. PAG, FMV, and GF-N wrote the manuscript first draft. All authors revised it critically. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Fabiano Matos Vieira.

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Gonçalves, P.A., Vieira, F.M., Felix-Nascimento, G. et al. Oxysomatium brevispiculum n. sp. (Nematoda: Cosmocercidae) from Amphisbaena alba Linnaeus (Squamata, Amphisbaenidae) in the Cerrado Biome from Brazil. Syst Parasitol 101, 14 (2024). https://doi.org/10.1007/s11230-023-10129-w

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