First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
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=S1415-47572008000200021 |
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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Genetics and Molecular Biology |
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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.Sociedade Brasileira de Genética2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200021Genetics and Molecular Biology v.31 n.1 suppl.0 2008reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572008000200021info:eu-repo/semantics/openAccessHashimoto,Diogo TeruoGonçalves,Vanessa ReginaBortolozzi,JehudForesti,FaustoPorto-Foresti,Fábioeng2008-06-03T00:00:00Zoai:scielo:S1415-47572008000200021Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2008-06-03T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)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 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 |
author_facet |
Hashimoto,Diogo Teruo Gonçalves,Vanessa Regina Bortolozzi,Jehud Foresti,Fausto Porto-Foresti,Fábio |
author_role |
author |
author2 |
Gonçalves,Vanessa Regina Bortolozzi,Jehud Foresti,Fausto Porto-Foresti,Fábio |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Hashimoto,Diogo Teruo Gonçalves,Vanessa Regina Bortolozzi,Jehud Foresti,Fausto Porto-Foresti,Fábio |
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 |
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=S1415-47572008000200021 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200021 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1415-47572008000200021 |
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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1752122381114015744 |