B-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)

Detalhes bibliográficos
Autor(a) principal: Medeiros,Lilian R.
Data de Publicação: 2006
Outros Autores: Rossa-Feres,Denise C., Jim,Jorge, Recco-Pimentel,Shirlei M.
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=S1415-47572006000200010
Resumo: We report on the presence of B-chromosomes in two populations of Dendropsophus nanus (= Hyla nana Boulenger, 1889) from São Paulo State, Brazil. Such chromosomes were observed in 4 out of 43 specimens (9.3%) and in 9 out of 15 specimens (60%) from the municipalities of Nova Aliança and Botucatu, respectively. The karyotype 2n = 30 + 1B found in D. nanus was similar to that of other species with 2n = 30 chromosomes, except for the presence of an additional small telocentric chromosome. In one specimen from Botucatu, cells with one to three extra chromosomes were observed. These B-chromosomes appeared as univalent in meiosis I and did not bear a nucleolar organizer region or exhibit constitutive heterochromatin.
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spelling B-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)Anura, b-chromosomecytogeneticsDendropsophussupernumerary chromosomeWe report on the presence of B-chromosomes in two populations of Dendropsophus nanus (= Hyla nana Boulenger, 1889) from São Paulo State, Brazil. Such chromosomes were observed in 4 out of 43 specimens (9.3%) and in 9 out of 15 specimens (60%) from the municipalities of Nova Aliança and Botucatu, respectively. The karyotype 2n = 30 + 1B found in D. nanus was similar to that of other species with 2n = 30 chromosomes, except for the presence of an additional small telocentric chromosome. In one specimen from Botucatu, cells with one to three extra chromosomes were observed. These B-chromosomes appeared as univalent in meiosis I and did not bear a nucleolar organizer region or exhibit constitutive heterochromatin.Sociedade Brasileira de Genética2006-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200010Genetics and Molecular Biology v.29 n.2 2006reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572006000200010info:eu-repo/semantics/openAccessMedeiros,Lilian R.Rossa-Feres,Denise C.Jim,JorgeRecco-Pimentel,Shirlei M.eng2006-06-12T00:00:00Zoai:scielo:S1415-47572006000200010Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2006-06-12T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false
dc.title.none.fl_str_mv B-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)
title B-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)
spellingShingle B-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)
Medeiros,Lilian R.
Anura, b-chromosome
cytogenetics
Dendropsophus
supernumerary chromosome
title_short B-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)
title_full B-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)
title_fullStr B-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)
title_full_unstemmed B-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)
title_sort B-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)
author Medeiros,Lilian R.
author_facet Medeiros,Lilian R.
Rossa-Feres,Denise C.
Jim,Jorge
Recco-Pimentel,Shirlei M.
author_role author
author2 Rossa-Feres,Denise C.
Jim,Jorge
Recco-Pimentel,Shirlei M.
author2_role author
author
author
dc.contributor.author.fl_str_mv Medeiros,Lilian R.
Rossa-Feres,Denise C.
Jim,Jorge
Recco-Pimentel,Shirlei M.
dc.subject.por.fl_str_mv Anura, b-chromosome
cytogenetics
Dendropsophus
supernumerary chromosome
topic Anura, b-chromosome
cytogenetics
Dendropsophus
supernumerary chromosome
description We report on the presence of B-chromosomes in two populations of Dendropsophus nanus (= Hyla nana Boulenger, 1889) from São Paulo State, Brazil. Such chromosomes were observed in 4 out of 43 specimens (9.3%) and in 9 out of 15 specimens (60%) from the municipalities of Nova Aliança and Botucatu, respectively. The karyotype 2n = 30 + 1B found in D. nanus was similar to that of other species with 2n = 30 chromosomes, except for the presence of an additional small telocentric chromosome. In one specimen from Botucatu, cells with one to three extra chromosomes were observed. These B-chromosomes appeared as univalent in meiosis I and did not bear a nucleolar organizer region or exhibit constitutive heterochromatin.
publishDate 2006
dc.date.none.fl_str_mv 2006-01-01
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=S1415-47572006000200010
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200010
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1415-47572006000200010
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.29 n.2 2006
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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