Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina)

Autores
Sánchez, Kevin Imanol; Takagui, Fabio H.; Fenocchio, Alberto Sergio
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Moenkhausia Eigenmann, 1903 is one of the most diverse genera within Characidae, being an important component of the Neotropical fish fauna. Three members of this genus were cytogenetically analyzed: M. dichroura Kner, 1858, M. intermedia Eigenmann, 1908 and M. sanctaefilomenae Steindachner, 1907. The three species showed 2n = 50 bi-armed chromosomes (NF = 100) and different karyotype formulas: 22m + 22sm + 6st in M. dichroura, 16m + 28sm + 6st in M. intermedia, and 12m + 32sm + 6st in M. sanctaefilomenae. In addition, supernumerary chromosomes (or B-chromosomes) were detected in M. intermedia and M. sanctaefilomenae. C-positive bands were restricted to pericentromeric regions, secondary constrictions and supernumerary chromosomes. Active nucleolus organizer regions (Ag-NORs) and positive CMA3 bands were observed in a single pair of sm chromosomes. Pericentromeric DAPI positive signals were evidenced on chromosomes of M. sanctaefilomenae only. Overall, the three species showed a conservative karyotype macrostructure (diploid number, number of chromosome arms) and variations in microstructure (karyotype formulas, presence/absence of supernumerary chromosomes). We discuss how the observed differences could have been shaped.
Fil: Sánchez, Kevin Imanol. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina
Fil: Takagui, Fabio H.. Universidade Estadual de Londrina; Brasil
Fil: Fenocchio, Alberto Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Universidad Nacional de Misiones. Instituto de Biología Subtropical; Argentina
Materia
NEOTROPICAL FISHES
MOENKHAUSIA
SUPERNUMERARY CHROMOSOMES
HETEROCHROMATIN
Ag-NORs
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/162122
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/162122
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina)Sánchez, Kevin ImanolTakagui, Fabio H.Fenocchio, Alberto SergioNEOTROPICAL FISHESMOENKHAUSIASUPERNUMERARY CHROMOSOMESHETEROCHROMATINAg-NORshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Moenkhausia Eigenmann, 1903 is one of the most diverse genera within Characidae, being an important component of the Neotropical fish fauna. Three members of this genus were cytogenetically analyzed: M. dichroura Kner, 1858, M. intermedia Eigenmann, 1908 and M. sanctaefilomenae Steindachner, 1907. The three species showed 2n = 50 bi-armed chromosomes (NF = 100) and different karyotype formulas: 22m + 22sm + 6st in M. dichroura, 16m + 28sm + 6st in M. intermedia, and 12m + 32sm + 6st in M. sanctaefilomenae. In addition, supernumerary chromosomes (or B-chromosomes) were detected in M. intermedia and M. sanctaefilomenae. C-positive bands were restricted to pericentromeric regions, secondary constrictions and supernumerary chromosomes. Active nucleolus organizer regions (Ag-NORs) and positive CMA3 bands were observed in a single pair of sm chromosomes. Pericentromeric DAPI positive signals were evidenced on chromosomes of M. sanctaefilomenae only. Overall, the three species showed a conservative karyotype macrostructure (diploid number, number of chromosome arms) and variations in microstructure (karyotype formulas, presence/absence of supernumerary chromosomes). We discuss how the observed differences could have been shaped.Fil: Sánchez, Kevin Imanol. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; ArgentinaFil: Takagui, Fabio H.. Universidade Estadual de Londrina; BrasilFil: Fenocchio, Alberto Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Universidad Nacional de Misiones. Instituto de Biología Subtropical; ArgentinaUniversity Florence Botany Institute2022-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/162122Sánchez, Kevin Imanol; Takagui, Fabio H.; Fenocchio, Alberto Sergio; Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina); University Florence Botany Institute; Caryologia; 74; 4; 3-2022; 3-100008-71142165-5391CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://riviste.fupress.net/index.php/caryologia/article/view/1064info:eu-repo/semantics/altIdentifier/doi/10.36253/caryologia-1064info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:49:28Zoai:ri.conicet.gov.ar:11336/162122instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:49:28.682CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina)
title Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina)
spellingShingle Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina)
Sánchez, Kevin Imanol
NEOTROPICAL FISHES
MOENKHAUSIA
SUPERNUMERARY CHROMOSOMES
HETEROCHROMATIN
Ag-NORs
title_short Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina)
title_full Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina)
title_fullStr Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina)
title_full_unstemmed Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina)
title_sort Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina)
dc.creator.none.fl_str_mv Sánchez, Kevin Imanol
Takagui, Fabio H.
Fenocchio, Alberto Sergio
author Sánchez, Kevin Imanol
author_facet Sánchez, Kevin Imanol
Takagui, Fabio H.
Fenocchio, Alberto Sergio
author_role author
author2 Takagui, Fabio H.
Fenocchio, Alberto Sergio
author2_role author
author
dc.subject.none.fl_str_mv NEOTROPICAL FISHES
MOENKHAUSIA
SUPERNUMERARY CHROMOSOMES
HETEROCHROMATIN
Ag-NORs
topic NEOTROPICAL FISHES
MOENKHAUSIA
SUPERNUMERARY CHROMOSOMES
HETEROCHROMATIN
Ag-NORs
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Moenkhausia Eigenmann, 1903 is one of the most diverse genera within Characidae, being an important component of the Neotropical fish fauna. Three members of this genus were cytogenetically analyzed: M. dichroura Kner, 1858, M. intermedia Eigenmann, 1908 and M. sanctaefilomenae Steindachner, 1907. The three species showed 2n = 50 bi-armed chromosomes (NF = 100) and different karyotype formulas: 22m + 22sm + 6st in M. dichroura, 16m + 28sm + 6st in M. intermedia, and 12m + 32sm + 6st in M. sanctaefilomenae. In addition, supernumerary chromosomes (or B-chromosomes) were detected in M. intermedia and M. sanctaefilomenae. C-positive bands were restricted to pericentromeric regions, secondary constrictions and supernumerary chromosomes. Active nucleolus organizer regions (Ag-NORs) and positive CMA3 bands were observed in a single pair of sm chromosomes. Pericentromeric DAPI positive signals were evidenced on chromosomes of M. sanctaefilomenae only. Overall, the three species showed a conservative karyotype macrostructure (diploid number, number of chromosome arms) and variations in microstructure (karyotype formulas, presence/absence of supernumerary chromosomes). We discuss how the observed differences could have been shaped.
Fil: Sánchez, Kevin Imanol. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina
Fil: Takagui, Fabio H.. Universidade Estadual de Londrina; Brasil
Fil: Fenocchio, Alberto Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Universidad Nacional de Misiones. Instituto de Biología Subtropical; Argentina
description Moenkhausia Eigenmann, 1903 is one of the most diverse genera within Characidae, being an important component of the Neotropical fish fauna. Three members of this genus were cytogenetically analyzed: M. dichroura Kner, 1858, M. intermedia Eigenmann, 1908 and M. sanctaefilomenae Steindachner, 1907. The three species showed 2n = 50 bi-armed chromosomes (NF = 100) and different karyotype formulas: 22m + 22sm + 6st in M. dichroura, 16m + 28sm + 6st in M. intermedia, and 12m + 32sm + 6st in M. sanctaefilomenae. In addition, supernumerary chromosomes (or B-chromosomes) were detected in M. intermedia and M. sanctaefilomenae. C-positive bands were restricted to pericentromeric regions, secondary constrictions and supernumerary chromosomes. Active nucleolus organizer regions (Ag-NORs) and positive CMA3 bands were observed in a single pair of sm chromosomes. Pericentromeric DAPI positive signals were evidenced on chromosomes of M. sanctaefilomenae only. Overall, the three species showed a conservative karyotype macrostructure (diploid number, number of chromosome arms) and variations in microstructure (karyotype formulas, presence/absence of supernumerary chromosomes). We discuss how the observed differences could have been shaped.
publishDate 2022
dc.date.none.fl_str_mv 2022-03
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/11336/162122
Sánchez, Kevin Imanol; Takagui, Fabio H.; Fenocchio, Alberto Sergio; Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina); University Florence Botany Institute; Caryologia; 74; 4; 3-2022; 3-10
0008-7114
2165-5391
CONICET Digital
CONICET
url http://hdl.handle.net/11336/162122
identifier_str_mv Sánchez, Kevin Imanol; Takagui, Fabio H.; Fenocchio, Alberto Sergio; Cytogenetic analyses in three species of Moenkhausia Eigenmann, 1903 (Characiformes, Characidae) from Upper Paraná River (Misiones, Argentina); University Florence Botany Institute; Caryologia; 74; 4; 3-2022; 3-10
0008-7114
2165-5391
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://riviste.fupress.net/index.php/caryologia/article/view/1064
info:eu-repo/semantics/altIdentifier/doi/10.36253/caryologia-1064
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv University Florence Botany Institute
publisher.none.fl_str_mv University Florence Botany Institute
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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