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

dc.contributorUniversidade Estadual de Campinas (UNICAMP)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:17:29Z
dc.date.available2014-05-20T15:17:29Z
dc.date.created2014-05-20T15:17:29Z
dc.date.issued2006-01-01
dc.identifierGenetics and Molecular Biology. Sociedade Brasileira de Genética, v. 29, n. 2, p. 257-262, 2006.
dc.identifier1415-4757
dc.identifierhttp://hdl.handle.net/11449/30484
dc.identifier10.1590/S1415-47572006000200010
dc.identifierS1415-47572006000200010
dc.identifierS1415-47572006000200010.pdf
dc.description.abstractWe 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.
dc.languageeng
dc.publisherSociedade Brasileira de Genética
dc.relationGenetics and Molecular Biology
dc.relation1.493
dc.relation0,638
dc.rightsAcesso aberto
dc.sourceSciELO
dc.subjectAnura, b-chromosome
dc.subjectCytogenetic
dc.subjectDendropsophus
dc.subjectsupernumerary chromosome
dc.titleB-chromosomes in two Brazilian populations of Dendropsophus nanus (Anura, Hylidae)
dc.typeArtículos de revistas


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