Cytotaxonomy and karyoevolution of the genus Crenicichla (Perciformes, Cichlidae)

Detalhes bibliográficos
Autor(a) principal: Benzaquem,Denise Corrêa
Data de Publicação: 2008
Outros Autores: Feldberg,Eliana, Porto,Jorge Ivan Rebelo, Gross,Maria Claudia, Zuanon,Jansen Alfredo Sampaio
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=S1415-47572008000200016
Resumo: Karyotypes of six cichlid species of the genus Crenicichla were investigated. The species C. cincta, C. inpa, C. reticulata, C. lugubris, and C. cf. johanna were collected from Amazon basin, and C. britskii was collected from the Paraná-Paraguai basin. All of the analysed species showed 2n = 48 chromosomes; however, C. cincta, C. lugubris, C. cf. johanna, and C. britskii had a karyotype formula of 8M-SM+40ST-A, FN = 56, while C. inpa and C. reticulata exhibited the formula 6M-SM+42ST-A, FN = 54. Analysis of active Ag-NORs revealed two NOR-bearing chromosomes in all species; however, theses cistrons were located on different chromosome pairs and/or in different chromosome locations in each species. This condition bears evolutionary significance, since it is the main chromosome marker of the process of karyotypic evolution among the species of the genus Crenicichla. In general, C-banding revealed a similar constitutive heterochromatin pattern in all species, although it was possible to detect some features that led us to infer that Crenicichla also presents a species-specific heterochromatin pattern.
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spelling Cytotaxonomy and karyoevolution of the genus Crenicichla (Perciformes, Cichlidae)karyotypepike cichlidchromosome markerAmazonKaryotypes of six cichlid species of the genus Crenicichla were investigated. The species C. cincta, C. inpa, C. reticulata, C. lugubris, and C. cf. johanna were collected from Amazon basin, and C. britskii was collected from the Paraná-Paraguai basin. All of the analysed species showed 2n = 48 chromosomes; however, C. cincta, C. lugubris, C. cf. johanna, and C. britskii had a karyotype formula of 8M-SM+40ST-A, FN = 56, while C. inpa and C. reticulata exhibited the formula 6M-SM+42ST-A, FN = 54. Analysis of active Ag-NORs revealed two NOR-bearing chromosomes in all species; however, theses cistrons were located on different chromosome pairs and/or in different chromosome locations in each species. This condition bears evolutionary significance, since it is the main chromosome marker of the process of karyotypic evolution among the species of the genus Crenicichla. In general, C-banding revealed a similar constitutive heterochromatin pattern in all species, although it was possible to detect some features that led us to infer that Crenicichla also presents a species-specific heterochromatin pattern.Sociedade Brasileira de Genética2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200016Genetics and Molecular Biology v.31 n.1 suppl.0 2008reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572008000200016info:eu-repo/semantics/openAccessBenzaquem,Denise CorrêaFeldberg,ElianaPorto,Jorge Ivan RebeloGross,Maria ClaudiaZuanon,Jansen Alfredo Sampaioeng2008-06-09T00:00:00Zoai:scielo:S1415-47572008000200016Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2008-06-09T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false
dc.title.none.fl_str_mv Cytotaxonomy and karyoevolution of the genus Crenicichla (Perciformes, Cichlidae)
title Cytotaxonomy and karyoevolution of the genus Crenicichla (Perciformes, Cichlidae)
spellingShingle Cytotaxonomy and karyoevolution of the genus Crenicichla (Perciformes, Cichlidae)
Benzaquem,Denise Corrêa
karyotype
pike cichlid
chromosome marker
Amazon
title_short Cytotaxonomy and karyoevolution of the genus Crenicichla (Perciformes, Cichlidae)
title_full Cytotaxonomy and karyoevolution of the genus Crenicichla (Perciformes, Cichlidae)
title_fullStr Cytotaxonomy and karyoevolution of the genus Crenicichla (Perciformes, Cichlidae)
title_full_unstemmed Cytotaxonomy and karyoevolution of the genus Crenicichla (Perciformes, Cichlidae)
title_sort Cytotaxonomy and karyoevolution of the genus Crenicichla (Perciformes, Cichlidae)
author Benzaquem,Denise Corrêa
author_facet Benzaquem,Denise Corrêa
Feldberg,Eliana
Porto,Jorge Ivan Rebelo
Gross,Maria Claudia
Zuanon,Jansen Alfredo Sampaio
author_role author
author2 Feldberg,Eliana
Porto,Jorge Ivan Rebelo
Gross,Maria Claudia
Zuanon,Jansen Alfredo Sampaio
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Benzaquem,Denise Corrêa
Feldberg,Eliana
Porto,Jorge Ivan Rebelo
Gross,Maria Claudia
Zuanon,Jansen Alfredo Sampaio
dc.subject.por.fl_str_mv karyotype
pike cichlid
chromosome marker
Amazon
topic karyotype
pike cichlid
chromosome marker
Amazon
description Karyotypes of six cichlid species of the genus Crenicichla were investigated. The species C. cincta, C. inpa, C. reticulata, C. lugubris, and C. cf. johanna were collected from Amazon basin, and C. britskii was collected from the Paraná-Paraguai basin. All of the analysed species showed 2n = 48 chromosomes; however, C. cincta, C. lugubris, C. cf. johanna, and C. britskii had a karyotype formula of 8M-SM+40ST-A, FN = 56, while C. inpa and C. reticulata exhibited the formula 6M-SM+42ST-A, FN = 54. Analysis of active Ag-NORs revealed two NOR-bearing chromosomes in all species; however, theses cistrons were located on different chromosome pairs and/or in different chromosome locations in each species. This condition bears evolutionary significance, since it is the main chromosome marker of the process of karyotypic evolution among the species of the genus Crenicichla. In general, C-banding revealed a similar constitutive heterochromatin pattern in all species, although it was possible to detect some features that led us to infer that Crenicichla also presents a species-specific heterochromatin pattern.
publishDate 2008
dc.date.none.fl_str_mv 2008-01-01
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=S1415-47572008000200016
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200016
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1415-47572008000200016
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.31 n.1 suppl.0 2008
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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