New occurrence of a macro B-chromosome in Astyanax scabripinnis paranae (Pisces, Characiformes, Characidae)

Detalhes bibliográficos
Autor(a) principal: Maistro, E. L. [UNESP]
Data de Publicação: 1994
Outros Autores: Foresti, F. [UNESP], Oliveira, C. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://www.gmb.org.br/Revistas/V17/v17a25.pdf
http://hdl.handle.net/11449/64449
Resumo: Cytogenetic studies performed on 17 specimens (11 females and six males) of Astyanax scabripinnis paranae from the Cascatinha stream showed that this population has 2n = 50 chromosomes (8M + 22SM + 10ST + 10A), two chromosome pairs with NORs and conspicuous C-band positive blocks in the terminal position of the long arm of five chromosome pairs. Three females presented 2n = 51 chromosomes and the extra chromosome was a large metacentric similar in size and morphology to the first chromosome pair in the karyotype. This accessory chromosome was entirely heterochromatic in C-banded metaphases, which permitted its classification as a supernumerary chromosome. Some aspects related to the morphology of such macro B-chromosomes are discussed.
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spelling New occurrence of a macro B-chromosome in Astyanax scabripinnis paranae (Pisces, Characiformes, Characidae)animal cellchromosome analysisfemalefishkaryotypemalenonhumansupernumerary chromosomeCytogenetic studies performed on 17 specimens (11 females and six males) of Astyanax scabripinnis paranae from the Cascatinha stream showed that this population has 2n = 50 chromosomes (8M + 22SM + 10ST + 10A), two chromosome pairs with NORs and conspicuous C-band positive blocks in the terminal position of the long arm of five chromosome pairs. Three females presented 2n = 51 chromosomes and the extra chromosome was a large metacentric similar in size and morphology to the first chromosome pair in the karyotype. This accessory chromosome was entirely heterochromatic in C-banded metaphases, which permitted its classification as a supernumerary chromosome. Some aspects related to the morphology of such macro B-chromosomes are discussed.Departamento de Morfologia Instituto de Biociencias UNESP, 18618-000 Botucatu, SPDepartamento de Morfologia Instituto de Biociencias UNESP, 18618-000 Botucatu, SPUniversidade Estadual Paulista (Unesp)Maistro, E. L. [UNESP]Foresti, F. [UNESP]Oliveira, C. [UNESP]2014-05-27T11:17:55Z2014-05-27T11:17:55Z1994-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article153-156application/pdfhttp://www.gmb.org.br/Revistas/V17/v17a25.pdfBrazilian Journal of Genetics, v. 17, n. 2, p. 153-156, 1994.0100-8455http://hdl.handle.net/11449/644492-s2.0-00280248622-s2.0-0028024862.pdf0804793944846367Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Journal of Geneticsinfo:eu-repo/semantics/openAccess2024-01-06T06:23:01Zoai:repositorio.unesp.br:11449/64449Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:13:30.823148Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv New occurrence of a macro B-chromosome in Astyanax scabripinnis paranae (Pisces, Characiformes, Characidae)
title New occurrence of a macro B-chromosome in Astyanax scabripinnis paranae (Pisces, Characiformes, Characidae)
spellingShingle New occurrence of a macro B-chromosome in Astyanax scabripinnis paranae (Pisces, Characiformes, Characidae)
Maistro, E. L. [UNESP]
animal cell
chromosome analysis
female
fish
karyotype
male
nonhuman
supernumerary chromosome
title_short New occurrence of a macro B-chromosome in Astyanax scabripinnis paranae (Pisces, Characiformes, Characidae)
title_full New occurrence of a macro B-chromosome in Astyanax scabripinnis paranae (Pisces, Characiformes, Characidae)
title_fullStr New occurrence of a macro B-chromosome in Astyanax scabripinnis paranae (Pisces, Characiformes, Characidae)
title_full_unstemmed New occurrence of a macro B-chromosome in Astyanax scabripinnis paranae (Pisces, Characiformes, Characidae)
title_sort New occurrence of a macro B-chromosome in Astyanax scabripinnis paranae (Pisces, Characiformes, Characidae)
author Maistro, E. L. [UNESP]
author_facet Maistro, E. L. [UNESP]
Foresti, F. [UNESP]
Oliveira, C. [UNESP]
author_role author
author2 Foresti, F. [UNESP]
Oliveira, C. [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Maistro, E. L. [UNESP]
Foresti, F. [UNESP]
Oliveira, C. [UNESP]
dc.subject.por.fl_str_mv animal cell
chromosome analysis
female
fish
karyotype
male
nonhuman
supernumerary chromosome
topic animal cell
chromosome analysis
female
fish
karyotype
male
nonhuman
supernumerary chromosome
description Cytogenetic studies performed on 17 specimens (11 females and six males) of Astyanax scabripinnis paranae from the Cascatinha stream showed that this population has 2n = 50 chromosomes (8M + 22SM + 10ST + 10A), two chromosome pairs with NORs and conspicuous C-band positive blocks in the terminal position of the long arm of five chromosome pairs. Three females presented 2n = 51 chromosomes and the extra chromosome was a large metacentric similar in size and morphology to the first chromosome pair in the karyotype. This accessory chromosome was entirely heterochromatic in C-banded metaphases, which permitted its classification as a supernumerary chromosome. Some aspects related to the morphology of such macro B-chromosomes are discussed.
publishDate 1994
dc.date.none.fl_str_mv 1994-01-01
2014-05-27T11:17:55Z
2014-05-27T11:17:55Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.gmb.org.br/Revistas/V17/v17a25.pdf
Brazilian Journal of Genetics, v. 17, n. 2, p. 153-156, 1994.
0100-8455
http://hdl.handle.net/11449/64449
2-s2.0-0028024862
2-s2.0-0028024862.pdf
0804793944846367
url http://www.gmb.org.br/Revistas/V17/v17a25.pdf
http://hdl.handle.net/11449/64449
identifier_str_mv Brazilian Journal of Genetics, v. 17, n. 2, p. 153-156, 1994.
0100-8455
2-s2.0-0028024862
2-s2.0-0028024862.pdf
0804793944846367
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Brazilian Journal of Genetics
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 153-156
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129406044995584

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