Cytogenetic studies of two freshwater sciaenids of the genus Plagioscion (perciformes, sciaenidae) from the Central Amazon

Detalhes bibliográficos
Autor(a) principal: Feldberg, Eliana
Data de Publicação: 1999
Outros Autores: Porto, Jorge Ivan Rebelo, dos Santos, Elen Bethlen Pedraça, Valentim, Francisco Carlos Souza
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional do INPA
Texto Completo: https://repositorio.inpa.gov.br/handle/1/14972
Resumo: Cytogenetic characterization of two freshwater sciaenid species from the genus Plagioscion (P. squamosissimus and Plagioscion sp.) was obtained for the first time. Giemsa staining, Ag-NOR and C-banding revealed that both species presented 2n = 48 chromosomes (almost all acrocentric). Single NORs and heterochromatin were found mainly at the pericentromeric position. Karyotypic formulae and NOR location proved to be valuable in showing both interspecific and intraspecific differences. All chromosomes were acrocentric in P. squamosissimus. NORs were located at proximal positions on the long arms of the last chromosome pair of the complement, and were heteromorphic due to size differences. Such heteromorphic NORs seem to be associated with each population sampled. Plagioscion sp. presented two cytotypes: cytotype a (2M + 46A) and cytotype b (48A). In both cytotypes, NOR-bearing chromosomes were located at the proximal position on the long arms of the first chromosome pair of the complement. However, NOR-bearing chromosomes were metacentric in cytotype a and acrocentric in cytotype b.
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spelling Feldberg, ElianaPorto, Jorge Ivan Rebelodos Santos, Elen Bethlen PedraçaValentim, Francisco Carlos Souza2020-05-07T13:59:14Z2020-05-07T13:59:14Z1999https://repositorio.inpa.gov.br/handle/1/1497210.1590/S1415-47571999000300011Cytogenetic characterization of two freshwater sciaenid species from the genus Plagioscion (P. squamosissimus and Plagioscion sp.) was obtained for the first time. Giemsa staining, Ag-NOR and C-banding revealed that both species presented 2n = 48 chromosomes (almost all acrocentric). Single NORs and heterochromatin were found mainly at the pericentromeric position. Karyotypic formulae and NOR location proved to be valuable in showing both interspecific and intraspecific differences. All chromosomes were acrocentric in P. squamosissimus. NORs were located at proximal positions on the long arms of the last chromosome pair of the complement, and were heteromorphic due to size differences. Such heteromorphic NORs seem to be associated with each population sampled. Plagioscion sp. presented two cytotypes: cytotype a (2M + 46A) and cytotype b (48A). In both cytotypes, NOR-bearing chromosomes were located at the proximal position on the long arms of the first chromosome pair of the complement. However, NOR-bearing chromosomes were metacentric in cytotype a and acrocentric in cytotype b.Volume 22, Número 3, Pags. 351-356Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessFresh WaterAnimals CellCentromereChromosome C BandChromosome NorCytogeneticsFemaleFishGiemsa StainHeterochromatinMaleNonhumanSilver StainingAnimalsiaPerciformesPlagioscionPlagioscionPlagioscion SquamosissimusPlagioscion SquamosissimusSciaenidaeCytogenetic studies of two freshwater sciaenids of the genus Plagioscion (perciformes, sciaenidae) from the Central Amazoninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleGenetics and Molecular Biologyengreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALartigo-inpa.pdfapplication/pdf224470https://repositorio.inpa.gov.br/bitstream/1/14972/1/artigo-inpa.pdfcc1d9aeb4b136bcbc27a7754bed8b7c9MD51CC-LICENSElicense_rdfapplication/octet-stream914https://repositorio.inpa.gov.br/bitstream/1/14972/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD521/149722020-07-14 10:30:14.336oai:repositorio:1/14972Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-07-14T14:30:14Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false
dc.title.en.fl_str_mv Cytogenetic studies of two freshwater sciaenids of the genus Plagioscion (perciformes, sciaenidae) from the Central Amazon
title Cytogenetic studies of two freshwater sciaenids of the genus Plagioscion (perciformes, sciaenidae) from the Central Amazon
spellingShingle Cytogenetic studies of two freshwater sciaenids of the genus Plagioscion (perciformes, sciaenidae) from the Central Amazon
Feldberg, Eliana
Fresh Water
Animals Cell
Centromere
Chromosome C Band
Chromosome Nor
Cytogenetics
Female
Fish
Giemsa Stain
Heterochromatin
Male
Nonhuman
Silver Staining
Animalsia
Perciformes
Plagioscion
Plagioscion
Plagioscion Squamosissimus
Plagioscion Squamosissimus
Sciaenidae
title_short Cytogenetic studies of two freshwater sciaenids of the genus Plagioscion (perciformes, sciaenidae) from the Central Amazon
title_full Cytogenetic studies of two freshwater sciaenids of the genus Plagioscion (perciformes, sciaenidae) from the Central Amazon
title_fullStr Cytogenetic studies of two freshwater sciaenids of the genus Plagioscion (perciformes, sciaenidae) from the Central Amazon
title_full_unstemmed Cytogenetic studies of two freshwater sciaenids of the genus Plagioscion (perciformes, sciaenidae) from the Central Amazon
title_sort Cytogenetic studies of two freshwater sciaenids of the genus Plagioscion (perciformes, sciaenidae) from the Central Amazon
author Feldberg, Eliana
author_facet Feldberg, Eliana
Porto, Jorge Ivan Rebelo
dos Santos, Elen Bethlen Pedraça
Valentim, Francisco Carlos Souza
author_role author
author2 Porto, Jorge Ivan Rebelo
dos Santos, Elen Bethlen Pedraça
Valentim, Francisco Carlos Souza
author2_role author
author
author
dc.contributor.author.fl_str_mv Feldberg, Eliana
Porto, Jorge Ivan Rebelo
dos Santos, Elen Bethlen Pedraça
Valentim, Francisco Carlos Souza
dc.subject.eng.fl_str_mv Fresh Water
Animals Cell
Centromere
Chromosome C Band
Chromosome Nor
Cytogenetics
Female
Fish
Giemsa Stain
Heterochromatin
Male
Nonhuman
Silver Staining
Animalsia
Perciformes
Plagioscion
Plagioscion
Plagioscion Squamosissimus
Plagioscion Squamosissimus
Sciaenidae
topic Fresh Water
Animals Cell
Centromere
Chromosome C Band
Chromosome Nor
Cytogenetics
Female
Fish
Giemsa Stain
Heterochromatin
Male
Nonhuman
Silver Staining
Animalsia
Perciformes
Plagioscion
Plagioscion
Plagioscion Squamosissimus
Plagioscion Squamosissimus
Sciaenidae
description Cytogenetic characterization of two freshwater sciaenid species from the genus Plagioscion (P. squamosissimus and Plagioscion sp.) was obtained for the first time. Giemsa staining, Ag-NOR and C-banding revealed that both species presented 2n = 48 chromosomes (almost all acrocentric). Single NORs and heterochromatin were found mainly at the pericentromeric position. Karyotypic formulae and NOR location proved to be valuable in showing both interspecific and intraspecific differences. All chromosomes were acrocentric in P. squamosissimus. NORs were located at proximal positions on the long arms of the last chromosome pair of the complement, and were heteromorphic due to size differences. Such heteromorphic NORs seem to be associated with each population sampled. Plagioscion sp. presented two cytotypes: cytotype a (2M + 46A) and cytotype b (48A). In both cytotypes, NOR-bearing chromosomes were located at the proximal position on the long arms of the first chromosome pair of the complement. However, NOR-bearing chromosomes were metacentric in cytotype a and acrocentric in cytotype b.
publishDate 1999
dc.date.issued.fl_str_mv 1999
dc.date.accessioned.fl_str_mv 2020-05-07T13:59:14Z
dc.date.available.fl_str_mv 2020-05-07T13:59:14Z
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dc.identifier.uri.fl_str_mv https://repositorio.inpa.gov.br/handle/1/14972
dc.identifier.doi.none.fl_str_mv 10.1590/S1415-47571999000300011
url https://repositorio.inpa.gov.br/handle/1/14972
identifier_str_mv 10.1590/S1415-47571999000300011
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Volume 22, Número 3, Pags. 351-356
dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Genetics and Molecular Biology
publisher.none.fl_str_mv Genetics and Molecular Biology
dc.source.none.fl_str_mv reponame:Repositório Institucional do INPA
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