Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae)

Detalhes bibliográficos
Autor(a) principal: Martinez,Emanuel Ricardo Monteiro
Data de Publicação: 2011
Outros Autores: Zawadzki,Claudio Henrique, Foresti,Fausto, Oliveira,Claudio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Genetics and Molecular Biology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400006
Resumo: In this work, we analyzed the karyotypes of five species. Hypostomus cf. heraldoi, from the Mogi-Guaçu River, had 2n = 72 chromosomes, with a nucleolar organizer region (NOR) in one chromosomal pair. Hypostomus regani, from the Mogi-Guaçu River had 2n = 72 chromosomes with NORs in two chromosomal pairs. Hypostomus sp., from the Mogi-Guaçu River basin, had 2n = 68 chromosomes, with NORs in two chromosomal pairs. Hypostomus aff. agna, from Cavalo Stream, had 2n = 74 chromosomes with NORs in two chromosomal pairs. Hypostomus cf. topavae, from Carrapato Stream, had 2n = 80 chromosomes, with NORs in two chromosomal pairs. Hypostomus species showed marked diversity in the karyotypic formula, which suggested the occurrence of several Robertsonian rearrangements and pericentric inversions during the evolutionary history of this genus. This hypothesis was supported by the occurrence of a large number of uniarmed chromosomes and multiple NORs in a terminal position in most species and may be a derived condition in the Loricariidae.
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spelling Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae)chromosomesevolutionHypostominaeNeotropical fishNORIn this work, we analyzed the karyotypes of five species. Hypostomus cf. heraldoi, from the Mogi-Guaçu River, had 2n = 72 chromosomes, with a nucleolar organizer region (NOR) in one chromosomal pair. Hypostomus regani, from the Mogi-Guaçu River had 2n = 72 chromosomes with NORs in two chromosomal pairs. Hypostomus sp., from the Mogi-Guaçu River basin, had 2n = 68 chromosomes, with NORs in two chromosomal pairs. Hypostomus aff. agna, from Cavalo Stream, had 2n = 74 chromosomes with NORs in two chromosomal pairs. Hypostomus cf. topavae, from Carrapato Stream, had 2n = 80 chromosomes, with NORs in two chromosomal pairs. Hypostomus species showed marked diversity in the karyotypic formula, which suggested the occurrence of several Robertsonian rearrangements and pericentric inversions during the evolutionary history of this genus. This hypothesis was supported by the occurrence of a large number of uniarmed chromosomes and multiple NORs in a terminal position in most species and may be a derived condition in the Loricariidae.Sociedade Brasileira de Genética2011-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400006Genetics and Molecular Biology v.34 n.4 2011reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572011005000038info:eu-repo/semantics/openAccessMartinez,Emanuel Ricardo MonteiroZawadzki,Claudio HenriqueForesti,FaustoOliveira,Claudioeng2011-11-11T00:00:00Zoai:scielo:S1415-47572011000400006Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2011-11-11T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false
dc.title.none.fl_str_mv Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae)
title Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae)
spellingShingle Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae)
Martinez,Emanuel Ricardo Monteiro
chromosomes
evolution
Hypostominae
Neotropical fish
NOR
title_short Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae)
title_full Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae)
title_fullStr Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae)
title_full_unstemmed Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae)
title_sort Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae)
author Martinez,Emanuel Ricardo Monteiro
author_facet Martinez,Emanuel Ricardo Monteiro
Zawadzki,Claudio Henrique
Foresti,Fausto
Oliveira,Claudio
author_role author
author2 Zawadzki,Claudio Henrique
Foresti,Fausto
Oliveira,Claudio
author2_role author
author
author
dc.contributor.author.fl_str_mv Martinez,Emanuel Ricardo Monteiro
Zawadzki,Claudio Henrique
Foresti,Fausto
Oliveira,Claudio
dc.subject.por.fl_str_mv chromosomes
evolution
Hypostominae
Neotropical fish
NOR
topic chromosomes
evolution
Hypostominae
Neotropical fish
NOR
description In this work, we analyzed the karyotypes of five species. Hypostomus cf. heraldoi, from the Mogi-Guaçu River, had 2n = 72 chromosomes, with a nucleolar organizer region (NOR) in one chromosomal pair. Hypostomus regani, from the Mogi-Guaçu River had 2n = 72 chromosomes with NORs in two chromosomal pairs. Hypostomus sp., from the Mogi-Guaçu River basin, had 2n = 68 chromosomes, with NORs in two chromosomal pairs. Hypostomus aff. agna, from Cavalo Stream, had 2n = 74 chromosomes with NORs in two chromosomal pairs. Hypostomus cf. topavae, from Carrapato Stream, had 2n = 80 chromosomes, with NORs in two chromosomal pairs. Hypostomus species showed marked diversity in the karyotypic formula, which suggested the occurrence of several Robertsonian rearrangements and pericentric inversions during the evolutionary history of this genus. This hypothesis was supported by the occurrence of a large number of uniarmed chromosomes and multiple NORs in a terminal position in most species and may be a derived condition in the Loricariidae.
publishDate 2011
dc.date.none.fl_str_mv 2011-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1415-47572011005000038
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Genética
publisher.none.fl_str_mv Sociedade Brasileira de Genética
dc.source.none.fl_str_mv Genetics and Molecular Biology v.34 n.4 2011
reponame:Genetics and Molecular Biology
instname:Sociedade Brasileira de Genética (SBG)
instacron:SBG
instname_str Sociedade Brasileira de Genética (SBG)
instacron_str SBG
institution SBG
reponame_str Genetics and Molecular Biology
collection Genetics and Molecular Biology
repository.name.fl_str_mv Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)
repository.mail.fl_str_mv ||editor@gmb.org.br
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