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Campo DC | Valor | Idioma |
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dc.contributor.author | Braga Ribeiro, Leila | - |
dc.contributor.author | Matoso, D. A. | - |
dc.contributor.author | Almeida, Mara Cristina de | - |
dc.contributor.author | Vicari, Marcelo Ricardo | - |
dc.contributor.author | Moraes-Neto, Américo | - |
dc.contributor.author | Svidnicki, Maria Carolina Costa Melo | - |
dc.contributor.author | Artoni, Roberto Ferreira | - |
dc.date.accessioned | 2020-05-07T14:00:30Z | - |
dc.date.available | 2020-05-07T14:00:30Z | - |
dc.date.issued | 2008 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/15008 | - |
dc.description.abstract | Cytogenetic analyses were carried out in a populational sample of Iheringichthys labrosus from the Guaraúna River (Upper Tibagi River; Paraná State, Brazil) in order to provide a karyotypic comparison with another previously studied population from the Lower Tibagi River, characterized by the presence of 32m + 8sm + 6st + 10a (2n = 56, FN = 102) and occurrence of supernumerary chromosomes (80% of individuals). The 17 specimens of I. labrosus (6 females, 10 males and 1 of unknown sex) from the Upper Tibagi River showed 2n = 56 chromosomes, a karyotype formula of 14m + 32sm + 4st + 6a (FN = 106), without evidence of sex chromosome heteromorphism or supernumerary chromosomes. The heterochromatin was detected at telomeric and centromeric positions in several chromosomal pairs. The Ag-nucleolar organizer regions were heteromorphic and located at terminal position on short arms of the 16th chromosomal pair, suggesting a positive association with heterochromatic regions. The inter-populational karyotypic differentiation reported indicates distinct evolutionary pathways within I. labrosus in the Tibagi River basin. ©FUNPEC-RP. | en |
dc.language.iso | en | pt_BR |
dc.relation.ispartof | Volume 7, Número 3, Pags. 718-724 | pt_BR |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Brazil | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/br/ | * |
dc.subject | Chromosome Analysis | en |
dc.subject | Chromosome Pairing | en |
dc.subject | Controlled Study | en |
dc.subject | Heterochromatin | en |
dc.subject | Karyotyping | en |
dc.subject | Metaphase | en |
dc.subject | Nonhuman | en |
dc.subject | River Basin | en |
dc.subject | Supernumerary Chromosome | en |
dc.subject | Teleost | en |
dc.subject | Iheringichthys Labrosus | en |
dc.subject | Pimelodidae | en |
dc.subject | Teleostei | en |
dc.title | Karyotypic variability in Iheringichthys labrosus (Teleostei, Pimelodidae) from the Tibagi River basin (Paraná State, Brazil) | en |
dc.type | Artigo | pt_BR |
dc.identifier.doi | 10.4238/vol7-3gmr456 | - |
dc.publisher.journal | Genetics and Molecular Research | pt_BR |
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