A new species of Neoechinorhynchus (Eoacanthocephala: Neoechinorhynchidae) from Pachyurus bonariensis (Perciformes: Sciaenidae) from the Paraná River basin in Argentina, with comme...

Autores
Arredondo, N.J.; Gil De Pertierra, A.A.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Neoechinorhynchus (Hebesoma) colastinense sp. n. is described from the intestine of Pachyurus bonariensis a freshwater fish from Parana River basin. The new species is characterized by having a cylindrical trunk, elongated but swollen anteriorly; a spherical proboscis with a prominent apical organ; the anterior circle of hooks very large, alternating in 2 levels, separated from more posterior circles of hooks, but sometimes surpassing the hooks of the middle and posterior circles; a relatively long neck; the male reproductive system occupying 78-81% (79%) of the trunk length; the female reproductive system occupying 27-39% (32%) of the trunk length; and eggs elongated with polar prolongation of the fertilization membrane. Members of the species can be distinguished easily from the other species of South American Neoechinorhynchus Stiles & Hassall, 1905 because they are the only ones with characteristics of the subgenus Hebesoma. Additionally, two other species are recorded for the first time in Argentina: Neoechinorhynchus {Neoechinorhynchus) macro-nucleatus Machado Filho, 1954 from Lycengraulis grossidens and N. (N) pimelodi Brasil-Sato & Pavanelli, 1998 from several species of Pimelodus. The presence of an apical organ at the proboscis tip is recorded in the new species and N. (N.) macronucleatus. Studies using scanning electron microscopy revealed the presence of non-rimmed pores in the tegument throughout the trunk, neck and proboscis of all three species. A key to the South American species of Neoechinorhynchus is provided.
Fil:Arredondo, N.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente
Rev. Suisse Zool. 2012;119(4):425-439
Materia
Acanthocephala
Freshwater fishes
Hebesoma
Morphology
Neoechino
Rhynchus
South America
Taxonomy
Eoacanthocephala
Hebesoma
Lycengraulis grossidens
Neoechinorhynchidae
Neoechinorhynchus
Neoechinorhynchus macronucleatus
Perciformes
Pimelodus
Pisces
Rhynchus
Sciaenidae
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/2.5/ar
Repositorio
Biblioteca Digital (UBA-FCEN)
Institución
Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
OAI Identificador
paperaa:paper_0035418X_v119_n4_p425_Arredondo
Acceder
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oai_identifier_str paperaa:paper_0035418X_v119_n4_p425_Arredondo
network_acronym_str BDUBAFCEN
repository_id_str 1896
network_name_str Biblioteca Digital (UBA-FCEN)
spelling A new species of Neoechinorhynchus (Eoacanthocephala: Neoechinorhynchidae) from Pachyurus bonariensis (Perciformes: Sciaenidae) from the Paraná River basin in Argentina, with comments on two other species of the genusArredondo, N.J.Gil De Pertierra, A.A.AcanthocephalaFreshwater fishesHebesomaMorphologyNeoechinoRhynchusSouth AmericaTaxonomyEoacanthocephalaHebesomaLycengraulis grossidensNeoechinorhynchidaeNeoechinorhynchusNeoechinorhynchus macronucleatusPerciformesPimelodusPiscesRhynchusSciaenidaeNeoechinorhynchus (Hebesoma) colastinense sp. n. is described from the intestine of Pachyurus bonariensis a freshwater fish from Parana River basin. The new species is characterized by having a cylindrical trunk, elongated but swollen anteriorly; a spherical proboscis with a prominent apical organ; the anterior circle of hooks very large, alternating in 2 levels, separated from more posterior circles of hooks, but sometimes surpassing the hooks of the middle and posterior circles; a relatively long neck; the male reproductive system occupying 78-81% (79%) of the trunk length; the female reproductive system occupying 27-39% (32%) of the trunk length; and eggs elongated with polar prolongation of the fertilization membrane. Members of the species can be distinguished easily from the other species of South American Neoechinorhynchus Stiles & Hassall, 1905 because they are the only ones with characteristics of the subgenus Hebesoma. Additionally, two other species are recorded for the first time in Argentina: Neoechinorhynchus {Neoechinorhynchus) macro-nucleatus Machado Filho, 1954 from Lycengraulis grossidens and N. (N) pimelodi Brasil-Sato & Pavanelli, 1998 from several species of Pimelodus. The presence of an apical organ at the proboscis tip is recorded in the new species and N. (N.) macronucleatus. Studies using scanning electron microscopy revealed the presence of non-rimmed pores in the tegument throughout the trunk, neck and proboscis of all three species. A key to the South American species of Neoechinorhynchus is provided.Fil:Arredondo, N.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12110/paper_0035418X_v119_n4_p425_ArredondoRev. Suisse Zool. 2012;119(4):425-439reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar2025-09-29T13:42:57Zpaperaa:paper_0035418X_v119_n4_p425_ArredondoInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-09-29 13:42:58.779Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
dc.title.none.fl_str_mv A new species of Neoechinorhynchus (Eoacanthocephala: Neoechinorhynchidae) from Pachyurus bonariensis (Perciformes: Sciaenidae) from the Paraná River basin in Argentina, with comments on two other species of the genus
title A new species of Neoechinorhynchus (Eoacanthocephala: Neoechinorhynchidae) from Pachyurus bonariensis (Perciformes: Sciaenidae) from the Paraná River basin in Argentina, with comments on two other species of the genus
spellingShingle A new species of Neoechinorhynchus (Eoacanthocephala: Neoechinorhynchidae) from Pachyurus bonariensis (Perciformes: Sciaenidae) from the Paraná River basin in Argentina, with comments on two other species of the genus
Arredondo, N.J.
Acanthocephala
Freshwater fishes
Hebesoma
Morphology
Neoechino
Rhynchus
South America
Taxonomy
Eoacanthocephala
Hebesoma
Lycengraulis grossidens
Neoechinorhynchidae
Neoechinorhynchus
Neoechinorhynchus macronucleatus
Perciformes
Pimelodus
Pisces
Rhynchus
Sciaenidae
title_short A new species of Neoechinorhynchus (Eoacanthocephala: Neoechinorhynchidae) from Pachyurus bonariensis (Perciformes: Sciaenidae) from the Paraná River basin in Argentina, with comments on two other species of the genus
title_full A new species of Neoechinorhynchus (Eoacanthocephala: Neoechinorhynchidae) from Pachyurus bonariensis (Perciformes: Sciaenidae) from the Paraná River basin in Argentina, with comments on two other species of the genus
title_fullStr A new species of Neoechinorhynchus (Eoacanthocephala: Neoechinorhynchidae) from Pachyurus bonariensis (Perciformes: Sciaenidae) from the Paraná River basin in Argentina, with comments on two other species of the genus
title_full_unstemmed A new species of Neoechinorhynchus (Eoacanthocephala: Neoechinorhynchidae) from Pachyurus bonariensis (Perciformes: Sciaenidae) from the Paraná River basin in Argentina, with comments on two other species of the genus
title_sort A new species of Neoechinorhynchus (Eoacanthocephala: Neoechinorhynchidae) from Pachyurus bonariensis (Perciformes: Sciaenidae) from the Paraná River basin in Argentina, with comments on two other species of the genus
dc.creator.none.fl_str_mv Arredondo, N.J.
Gil De Pertierra, A.A.
author Arredondo, N.J.
author_facet Arredondo, N.J.
Gil De Pertierra, A.A.
author_role author
author2 Gil De Pertierra, A.A.
author2_role author
dc.subject.none.fl_str_mv Acanthocephala
Freshwater fishes
Hebesoma
Morphology
Neoechino
Rhynchus
South America
Taxonomy
Eoacanthocephala
Hebesoma
Lycengraulis grossidens
Neoechinorhynchidae
Neoechinorhynchus
Neoechinorhynchus macronucleatus
Perciformes
Pimelodus
Pisces
Rhynchus
Sciaenidae
topic Acanthocephala
Freshwater fishes
Hebesoma
Morphology
Neoechino
Rhynchus
South America
Taxonomy
Eoacanthocephala
Hebesoma
Lycengraulis grossidens
Neoechinorhynchidae
Neoechinorhynchus
Neoechinorhynchus macronucleatus
Perciformes
Pimelodus
Pisces
Rhynchus
Sciaenidae
dc.description.none.fl_txt_mv Neoechinorhynchus (Hebesoma) colastinense sp. n. is described from the intestine of Pachyurus bonariensis a freshwater fish from Parana River basin. The new species is characterized by having a cylindrical trunk, elongated but swollen anteriorly; a spherical proboscis with a prominent apical organ; the anterior circle of hooks very large, alternating in 2 levels, separated from more posterior circles of hooks, but sometimes surpassing the hooks of the middle and posterior circles; a relatively long neck; the male reproductive system occupying 78-81% (79%) of the trunk length; the female reproductive system occupying 27-39% (32%) of the trunk length; and eggs elongated with polar prolongation of the fertilization membrane. Members of the species can be distinguished easily from the other species of South American Neoechinorhynchus Stiles & Hassall, 1905 because they are the only ones with characteristics of the subgenus Hebesoma. Additionally, two other species are recorded for the first time in Argentina: Neoechinorhynchus {Neoechinorhynchus) macro-nucleatus Machado Filho, 1954 from Lycengraulis grossidens and N. (N) pimelodi Brasil-Sato & Pavanelli, 1998 from several species of Pimelodus. The presence of an apical organ at the proboscis tip is recorded in the new species and N. (N.) macronucleatus. Studies using scanning electron microscopy revealed the presence of non-rimmed pores in the tegument throughout the trunk, neck and proboscis of all three species. A key to the South American species of Neoechinorhynchus is provided.
Fil:Arredondo, N.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
description Neoechinorhynchus (Hebesoma) colastinense sp. n. is described from the intestine of Pachyurus bonariensis a freshwater fish from Parana River basin. The new species is characterized by having a cylindrical trunk, elongated but swollen anteriorly; a spherical proboscis with a prominent apical organ; the anterior circle of hooks very large, alternating in 2 levels, separated from more posterior circles of hooks, but sometimes surpassing the hooks of the middle and posterior circles; a relatively long neck; the male reproductive system occupying 78-81% (79%) of the trunk length; the female reproductive system occupying 27-39% (32%) of the trunk length; and eggs elongated with polar prolongation of the fertilization membrane. Members of the species can be distinguished easily from the other species of South American Neoechinorhynchus Stiles & Hassall, 1905 because they are the only ones with characteristics of the subgenus Hebesoma. Additionally, two other species are recorded for the first time in Argentina: Neoechinorhynchus {Neoechinorhynchus) macro-nucleatus Machado Filho, 1954 from Lycengraulis grossidens and N. (N) pimelodi Brasil-Sato & Pavanelli, 1998 from several species of Pimelodus. The presence of an apical organ at the proboscis tip is recorded in the new species and N. (N.) macronucleatus. Studies using scanning electron microscopy revealed the presence of non-rimmed pores in the tegument throughout the trunk, neck and proboscis of all three species. A key to the South American species of Neoechinorhynchus is provided.
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12110/paper_0035418X_v119_n4_p425_Arredondo
url http://hdl.handle.net/20.500.12110/paper_0035418X_v119_n4_p425_Arredondo
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/2.5/ar
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Rev. Suisse Zool. 2012;119(4):425-439
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
collection Biblioteca Digital (UBA-FCEN)
instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
repository.name.fl_str_mv Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
repository.mail.fl_str_mv ana@bl.fcen.uba.ar
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