Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)

Detalhes bibliográficos
Autor(a) principal: Marques,Debora Karla
Data de Publicação: 2006
Outros Autores: Venere,Paulo Cesar, Galetti Junior,Pedro Manoel
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Neotropical ichthyology (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000200007
Resumo: The mitotic chromosomes of the pirarucu Arapaima gigas inhabiting the middle Araguaia River and collected in the municipality of Araguaiana (MT, Brazil) were studied. The chromosomes were analyzed through Giemsa staining, C-banding, Ag-NOR staining and in situ hybridization using an 18S rRNA gene probe. The karyotype had 2n=56 comprising 14 biarmed and 14 uniarmed chromosome pairs in both sexes. No cytologically distinguishable sex chromosome was identified. A single NOR-bearing chromosome pair was detected by Ag-NOR staining and confirmed by 18S rDNA- FISH. Faint constitutive heterochromatin was C-banded in the centromeric region of some chromosomes.
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spelling Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)PirarucuKaryotyperDNAHeterochromatinThe mitotic chromosomes of the pirarucu Arapaima gigas inhabiting the middle Araguaia River and collected in the municipality of Araguaiana (MT, Brazil) were studied. The chromosomes were analyzed through Giemsa staining, C-banding, Ag-NOR staining and in situ hybridization using an 18S rRNA gene probe. The karyotype had 2n=56 comprising 14 biarmed and 14 uniarmed chromosome pairs in both sexes. No cytologically distinguishable sex chromosome was identified. A single NOR-bearing chromosome pair was detected by Ag-NOR staining and confirmed by 18S rDNA- FISH. Faint constitutive heterochromatin was C-banded in the centromeric region of some chromosomes.Sociedade Brasileira de Ictiologia2006-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000200007Neotropical Ichthyology v.4 n.2 2006reponame:Neotropical ichthyology (Online)instname:Sociedade Brasileira de Ictiologia (SBI)instacron:SBI10.1590/S1679-62252006000200007info:eu-repo/semantics/openAccessMarques,Debora KarlaVenere,Paulo CesarGaletti Junior,Pedro Manoeleng2007-12-10T00:00:00Zoai:scielo:S1679-62252006000200007Revistahttp://www.ufrgs.br/ni/https://old.scielo.br/oai/scielo-oai.php||neoichth@nupelia.uem.br1982-02241679-6225opendoar:2007-12-10T00:00Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)false
dc.title.none.fl_str_mv Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)
title Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)
spellingShingle Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)
Marques,Debora Karla
Pirarucu
Karyotype
rDNA
Heterochromatin
title_short Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)
title_full Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)
title_fullStr Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)
title_full_unstemmed Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)
title_sort Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)
author Marques,Debora Karla
author_facet Marques,Debora Karla
Venere,Paulo Cesar
Galetti Junior,Pedro Manoel
author_role author
author2 Venere,Paulo Cesar
Galetti Junior,Pedro Manoel
author2_role author
author
dc.contributor.author.fl_str_mv Marques,Debora Karla
Venere,Paulo Cesar
Galetti Junior,Pedro Manoel
dc.subject.por.fl_str_mv Pirarucu
Karyotype
rDNA
Heterochromatin
topic Pirarucu
Karyotype
rDNA
Heterochromatin
description The mitotic chromosomes of the pirarucu Arapaima gigas inhabiting the middle Araguaia River and collected in the municipality of Araguaiana (MT, Brazil) were studied. The chromosomes were analyzed through Giemsa staining, C-banding, Ag-NOR staining and in situ hybridization using an 18S rRNA gene probe. The karyotype had 2n=56 comprising 14 biarmed and 14 uniarmed chromosome pairs in both sexes. No cytologically distinguishable sex chromosome was identified. A single NOR-bearing chromosome pair was detected by Ag-NOR staining and confirmed by 18S rDNA- FISH. Faint constitutive heterochromatin was C-banded in the centromeric region of some chromosomes.
publishDate 2006
dc.date.none.fl_str_mv 2006-06-01
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=S1679-62252006000200007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000200007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1679-62252006000200007
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 Ictiologia
publisher.none.fl_str_mv Sociedade Brasileira de Ictiologia
dc.source.none.fl_str_mv Neotropical Ichthyology v.4 n.2 2006
reponame:Neotropical ichthyology (Online)
instname:Sociedade Brasileira de Ictiologia (SBI)
instacron:SBI
instname_str Sociedade Brasileira de Ictiologia (SBI)
instacron_str SBI
institution SBI
reponame_str Neotropical ichthyology (Online)
collection Neotropical ichthyology (Online)
repository.name.fl_str_mv Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)
repository.mail.fl_str_mv ||neoichth@nupelia.uem.br
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