First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)

Detalhes bibliográficos
Autor(a) principal: Hashimoto, Diogo Teruo [UNESP]
Data de Publicação: 2008
Outros Autores: Gonçalves, Vanessa Regina [UNESP], Bortolozzi, Jehud [UNESP], Foresti, Fausto [UNESP], Porto-Foresti, Fábio [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S1415-47572008000200021
http://hdl.handle.net/11449/8174
Resumo: Several species of the genus Astyanax have already been genetically studied, and B-chromosomes have been considered to be an interesting feature in some species of this group. In the present paper we report, for the first time, the occurrence of a B microchromosome in a natural population of A. altiparanae. This additional genomic element was identified as an acrocentric chromosome, similar in size to the smallest chromosomal pairs of the standard karyotype. Analysis of the constitutive heterochromatin pattern by C-banding evidenced heterochromatic blocks located on centromeric, pericentromeric, and interstitial regions of some chromosomes, and also positive marks in a subtelocentric chromosomal pair that presented the short arms entirely heterochromatic. The application of this methodology also revealed a heterochromatic pattern in the extra chromosome, a typical feature of supernumerary chromosomes.
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spelling First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)B chromosomesfish cytogeneticsAstyanax altiparanaeSeveral species of the genus Astyanax have already been genetically studied, and B-chromosomes have been considered to be an interesting feature in some species of this group. In the present paper we report, for the first time, the occurrence of a B microchromosome in a natural population of A. altiparanae. This additional genomic element was identified as an acrocentric chromosome, similar in size to the smallest chromosomal pairs of the standard karyotype. Analysis of the constitutive heterochromatin pattern by C-banding evidenced heterochromatic blocks located on centromeric, pericentromeric, and interstitial regions of some chromosomes, and also positive marks in a subtelocentric chromosomal pair that presented the short arms entirely heterochromatic. The application of this methodology also revealed a heterochromatic pattern in the extra chromosome, a typical feature of supernumerary chromosomes.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Universidade Estadual Paulista Faculdade de Ciências Departamento de Ciências BiológicasUniversidade Estadual Paulista Instituto de Biociências Departamento de MorfologiaUniversidade Estadual Paulista Faculdade de Ciências Departamento de Ciências BiológicasUniversidade Estadual Paulista Instituto de Biociências Departamento de MorfologiaSociedade Brasileira de GenéticaUniversidade Estadual Paulista (Unesp)Hashimoto, Diogo Teruo [UNESP]Gonçalves, Vanessa Regina [UNESP]Bortolozzi, Jehud [UNESP]Foresti, Fausto [UNESP]Porto-Foresti, Fábio [UNESP]2014-05-20T13:25:42Z2014-05-20T13:25:42Z2008-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article275-278application/pdfhttp://dx.doi.org/10.1590/S1415-47572008000200021Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 31, n. 1, p. 275-278, 2008.1415-4757http://hdl.handle.net/11449/817410.1590/S1415-47572008000200021S1415-47572008000200021WOS:000257238500021S1415-47572008000200021.pdf3815338174165832SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGenetics and Molecular Biology1.4930,638info:eu-repo/semantics/openAccess2024-04-23T15:23:05Zoai:repositorio.unesp.br:11449/8174Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-23T15:23:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)
title First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)
spellingShingle First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)
Hashimoto, Diogo Teruo [UNESP]
B chromosomes
fish cytogenetics
Astyanax altiparanae
title_short First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)
title_full First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)
title_fullStr First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)
title_full_unstemmed First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)
title_sort First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)
author Hashimoto, Diogo Teruo [UNESP]
author_facet Hashimoto, Diogo Teruo [UNESP]
Gonçalves, Vanessa Regina [UNESP]
Bortolozzi, Jehud [UNESP]
Foresti, Fausto [UNESP]
Porto-Foresti, Fábio [UNESP]
author_role author
author2 Gonçalves, Vanessa Regina [UNESP]
Bortolozzi, Jehud [UNESP]
Foresti, Fausto [UNESP]
Porto-Foresti, Fábio [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Hashimoto, Diogo Teruo [UNESP]
Gonçalves, Vanessa Regina [UNESP]
Bortolozzi, Jehud [UNESP]
Foresti, Fausto [UNESP]
Porto-Foresti, Fábio [UNESP]
dc.subject.por.fl_str_mv B chromosomes
fish cytogenetics
Astyanax altiparanae
topic B chromosomes
fish cytogenetics
Astyanax altiparanae
description Several species of the genus Astyanax have already been genetically studied, and B-chromosomes have been considered to be an interesting feature in some species of this group. In the present paper we report, for the first time, the occurrence of a B microchromosome in a natural population of A. altiparanae. This additional genomic element was identified as an acrocentric chromosome, similar in size to the smallest chromosomal pairs of the standard karyotype. Analysis of the constitutive heterochromatin pattern by C-banding evidenced heterochromatic blocks located on centromeric, pericentromeric, and interstitial regions of some chromosomes, and also positive marks in a subtelocentric chromosomal pair that presented the short arms entirely heterochromatic. The application of this methodology also revealed a heterochromatic pattern in the extra chromosome, a typical feature of supernumerary chromosomes.
publishDate 2008
dc.date.none.fl_str_mv 2008-01-01
2014-05-20T13:25:42Z
2014-05-20T13:25:42Z
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://dx.doi.org/10.1590/S1415-47572008000200021
Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 31, n. 1, p. 275-278, 2008.
1415-4757
http://hdl.handle.net/11449/8174
10.1590/S1415-47572008000200021
S1415-47572008000200021
WOS:000257238500021
S1415-47572008000200021.pdf
3815338174165832
url http://dx.doi.org/10.1590/S1415-47572008000200021
http://hdl.handle.net/11449/8174
identifier_str_mv Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 31, n. 1, p. 275-278, 2008.
1415-4757
10.1590/S1415-47572008000200021
S1415-47572008000200021
WOS:000257238500021
S1415-47572008000200021.pdf
3815338174165832
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Genetics and Molecular Biology
1.493
0,638
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 275-278
application/pdf
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 SciELO
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_ 1799964629907013632

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