Geographical karyotypic variations and chromosome banding patterns in tropidurus hispidus (Sauria, iguanidae) from brazil

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dc.contributor.authorKasahara, Sanae [UNESP]
dc.contributor.authorYonenaga-Yassuda, Yatiyo
dc.contributor.authorRodrigues, Miguel Trefaut
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Federal da Paraiba
dc.date.accessioned2022-04-29T07:26:38Z
dc.date.available2022-04-29T07:26:38Z
dc.date.issued1987-01-01
dc.description.abstractKaryotypic data are presented for Tropidurus hispidus (Sauria, Iguani-dae) collected at six different localities in Brazil. The specimens from all the populations share the same basic 2n = 36 karyotype characterized by 12 macrochromosomes and 24 microchromosomes. The X is an acrocentric microchromosome and the Y, a minute microchromosome. The mechanism of sex determination is of XX:XY type. Geographical karyotypic variations related to the presence or the absence of a prominent secondary constriction in one pair of macrochromosomes and to different sites of the nucleolar organizer regions (NORs) were found. Chromosome polymorphisms related to the size of the secondary constriction, the differential activity of NORs and the amount of constitutive heterochromatin were observed in specimens from some populations. G-and R-banding patterns were obtained for the first time in T. hispidus after «in vivo» treatment with 5-bromodeoxyuridine (BrdU). © 1987 Taylor & Francis Group, LLC.en
dc.description.affiliationDepartamento de Biologia Instituto de Biociencias Universidade Estadual Paulista Julio de Mesquita Filho, CP 178, Rio Claro, SP, 13500
dc.description.affiliationDepartamento de Biologia Instituto de Biociencias Universidade de Sao Paulo, CP 11461, Sao Paulo, SP, 05499
dc.description.affiliationDepartamento de Sistematica e Ecologia Universidade Federal da Paraiba, Joao Pessoa, PB, 58000
dc.description.affiliationUnespDepartamento de Biologia Instituto de Biociencias Universidade Estadual Paulista Julio de Mesquita Filho, CP 178, Rio Claro, SP, 13500
dc.format.extent43-57
dc.identifierhttp://dx.doi.org/10.1080/00087114.1987.10797808
dc.identifier.citationCaryologia, v. 40, n. 1-2, p. 43-57, 1987.
dc.identifier.doi10.1080/00087114.1987.10797808
dc.identifier.issn2165-5391
dc.identifier.issn0008-7114
dc.identifier.scopus2-s2.0-84954868208
dc.identifier.urihttp://hdl.handle.net/11449/228097
dc.language.isoeng
dc.relation.ispartofCaryologia
dc.sourceScopus
dc.titleGeographical karyotypic variations and chromosome banding patterns in tropidurus hispidus (Sauria, iguanidae) from brazilen
dc.typeArtigo

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