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An integrative taxonomic study of Pavanelliella spp. (Monogenoidea, Dactylogyridae) with the description of a new species from the nasal cavities of an Amazon pimelodid catfish.

  • Aguiar, Julio C1
  • Maia, Antônio A M2
  • Silva, Marcia R M2
  • Ceccarelli, Paulo S3
  • Domingues, Marcus V4
  • Adriano, Edson A5
  • 1 Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Rua Monteiro Lobato, 255, CEP 13083-862 Campinas, São Paulo, Brazil. Electronic address: [email protected] , (Brazil)
  • 2 Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo (FZEA/USP), Rua Duque de Caxias Norte, 225, CEP 13635-900 Pirassununga, São Paulo, Brazil. , (Brazil)
  • 3 Centro Nacional de Pesquisa e Conservação da Biodiversidade Aquática Continental, Instituto Chico Mendes de Conservação da Biodiversidade (CEPTA/ICMBio), Rodovia Prefeito Euberto Nemésio Pereira de Godoy, km 6,5, CEP 13630-970 Pirassununga, São Paulo, Brazil. , (Brazil)
  • 4 Instituto de Estudos Costeiros, Universidade Federal do Pará (UFPA), Travessa Leandro Ribeiro, s/n, Aldeia, CEP 68600-000 Bragança, Pará, Brazil. , (Brazil)
  • 5 Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Rua Monteiro Lobato, 255, CEP 13083-862 Campinas, São Paulo, Brazil; Departamento de Ecologia e Biologia Evolutiva, Universidade Federal de São Paulo (UNIFESP), Rua Professor Arthur Riedel, 275, Jardim Eldorado, CEP 09972-270 Diadema, São Paulo, Brazil. , (Brazil)
Published Article
Parasitology international
Publication Date
Dec 01, 2017
DOI: 10.1016/j.parint.2017.09.003
PMID: 28899837


The present study is an integrative taxonomic analysis of Pavanelliella spp. (Monogenoidea, Dactylogyridae), and describes a new species from the nasal cavities of the Amazonian pimelodid catfish Brachyplatystoma rousseauxii (Siluriformes Pimelodidae) from the Tapajós River (Amazon Basin, Pará state, Brazil). Pavanelliella jarii sp. n. is characterized by the presence of 3-4 rings in the male copulatory organ, the absence of rings around the vaginal atrium and by its sinuous vaginal canal, which sometimes forms 0.5-1 rings in the distal portion. The sequencing of the small subunit ribosomal DNA (ssrDNA) and internal transcribed spacer 1 (ITS-1) of three species of Pavanelliella, Vancleaveus cicinnus, and an undetermined dactylogyrid allowed the phylogenetic reconstruction of these dactylogyrids. The analysis indicated that P. jarii sp. n. is closely related to Pavanelliella takemotoi and Pavanelliella pavanellii, which formed a sister clade to ancylodiscoidines parasites of siluriform fish from the Oriental and Afrotropical regions. The analysis also corroborated the non-monophyly of Ancyrocephalinae, revealing that ancylodiscoidines arose between ancyrocephalines lineages, in a sister relationship to pseudodactylogyrines+marine ancyrocephalines+ancyrocephalines parasites of afrotropical perciforms+dactylogyrines. Cladistical analysis indicates that the haptoral anchor/bar complex has been lost several times in the evolutionary history of Dactylogyridae. The analysis also indicated that Dactylogyrus is polyphyletic, as Acolpenteron ureteroecetes and Dactylogyroides longicirrus arose between the three lineages formed by Dactylogyrus spp. Copyright © 2017 Elsevier B.V. All rights reserved.

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