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

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

Author Aguiar, Julio C. Google Scholar
Maia, Antonio A. M. Google Scholar
Silva, Marcia R. M. Google Scholar
Ceccarelli, Paulo S. Google Scholar
Domingues, Marcus V. Google Scholar
Adriano, Edson A. Autor UNIFESP Google Scholar
Abstract The present study is an integrative taxonomic analysis of Pavartaida spp. (Monogenoidea, Dactylogyridae), and describes a new species from the nasal cavities of the Amazonian pimelodid catfish Brachyplatystoma rousseauxii (Siluriformes Pimelodidae) from the Tapajos River (Amazon Basin, Para state, Brazil). Pavanelliella jcrrii 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 Glade 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 Iongicirrus arose between the three lineages formed by Dactylogyrus spp.
Keywords Parasites
Monogenoidea
Taxonomy
Molecular analysis
Phylogeny
Amazon
xmlui.dri2xhtml.METS-1.0.item-coverage Clare
Language English
Sponsor Sao Paulo Research Foundation - FAPESP
CNPq
Grant number FAPESP: 2013/21374-6
FAPESP: 2013/20770-5
CNPq: 305630/2013-0
Date 2017
Published in Parasitology International. Clare, v. 66, n. 6, p. 777-788, 2017.
ISSN 1383-5769 (Sherpa/Romeo, impact factor)
Publisher Elsevier Ireland Ltd
Extent 777-788
Origin http://dx.doi.org/10.1016/j.parint.2017.09.003
Access rights Closed access
Type Article
Web of Science ID WOS:000414114900009
URI https://repositorio.unifesp.br/handle/11600/58154

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