<i>Rhinoxenus</i> (Dactylogyridae) parasitizing piranhas (Serrasalmidae) at its southernmost limit of distribution (Paraná River, Argentina), with the description of two new species

Three piranha species, Serrasalmus maculatus, S. marginatus and Pygocentrus nattereri, living sympatrically in the lower Parana River (Argentina) were examined searching for nasal monogeneans to know its diversity and distribution. Four species of monogeneans belonging to Rhinoxenus were found paras...

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Detalles Bibliográficos
Autores principales: Rossin, María Alejandra, De Francesco, Pablo Nicolás, Irigoitia, Manuel Marcial, Scarabotti, Pablo Augusto, Taglioretti, Verónica, Timi, Juan T.
Formato: Articulo
Lenguaje:Español
Publicado: 2019
Materias:
Biología
Piranhas
Nasal parasites
Rhinoxenus spp.
South American rivers
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123680
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-123680
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Biología
Piranhas
Nasal parasites
Rhinoxenus spp.
South American rivers
spellingShingle Biología
Piranhas
Nasal parasites
Rhinoxenus spp.
South American rivers
Rossin, María Alejandra
De Francesco, Pablo Nicolás
Irigoitia, Manuel Marcial
Scarabotti, Pablo Augusto
Taglioretti, Verónica
Timi, Juan T.
<i>Rhinoxenus</i> (Dactylogyridae) parasitizing piranhas (Serrasalmidae) at its southernmost limit of distribution (Paraná River, Argentina), with the description of two new species
topic_facet Biología
Piranhas
Nasal parasites
Rhinoxenus spp.
South American rivers
description Three piranha species, Serrasalmus maculatus, S. marginatus and Pygocentrus nattereri, living sympatrically in the lower Parana River (Argentina) were examined searching for nasal monogeneans to know its diversity and distribution. Four species of monogeneans belonging to Rhinoxenus were found parasitizing the nasal cavities. Two new species are described, and new morphological data of 2 previously described species is provided. Rhinoxenus argentinensis n. sp. is characterized by having the male copulatory organ (MCO) as a coiled tube with a reel shaped-base; an elongated accessory piece articulated to base of MCO; a sinistral vagina with a sclerotized vestibule, and a sclerotized cap of the ventral anchor laterally modified forming a triangular expansion. Rhinoxenus paranaensis n. sp. is characterized by having a MCO as a coiled tube with a reel-shaped base; an accessory piece with an elongate proximal portion, a dilated distal portion with digitiform projections articulated to base of MCO; a sinistral vagina with 5-6 cuticular spine-shaped processes, and a sclerotized cap of the ventral anchor modified laterally forming a bilobate expansion. Additionally, multivariate discriminant analyses showed significant morphometric differences in the ventral anchors among Rhinoxenus species parasitizing 'piranhas '.
format Articulo
Articulo
author Rossin, María Alejandra
De Francesco, Pablo Nicolás
Irigoitia, Manuel Marcial
Scarabotti, Pablo Augusto
Taglioretti, Verónica
Timi, Juan T.
author_facet Rossin, María Alejandra
De Francesco, Pablo Nicolás
Irigoitia, Manuel Marcial
Scarabotti, Pablo Augusto
Taglioretti, Verónica
Timi, Juan T.
author_sort Rossin, María Alejandra
title <i>Rhinoxenus</i> (Dactylogyridae) parasitizing piranhas (Serrasalmidae) at its southernmost limit of distribution (Paraná River, Argentina), with the description of two new species
title_short <i>Rhinoxenus</i> (Dactylogyridae) parasitizing piranhas (Serrasalmidae) at its southernmost limit of distribution (Paraná River, Argentina), with the description of two new species
title_full <i>Rhinoxenus</i> (Dactylogyridae) parasitizing piranhas (Serrasalmidae) at its southernmost limit of distribution (Paraná River, Argentina), with the description of two new species
title_fullStr <i>Rhinoxenus</i> (Dactylogyridae) parasitizing piranhas (Serrasalmidae) at its southernmost limit of distribution (Paraná River, Argentina), with the description of two new species
title_full_unstemmed <i>Rhinoxenus</i> (Dactylogyridae) parasitizing piranhas (Serrasalmidae) at its southernmost limit of distribution (Paraná River, Argentina), with the description of two new species
title_sort <i>rhinoxenus</i> (dactylogyridae) parasitizing piranhas (serrasalmidae) at its southernmost limit of distribution (paraná river, argentina), with the description of two new species
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/123680
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