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Campo DC | Valor | Idioma |
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dc.contributor.author | Souza E Sousa, José F. de | - |
dc.contributor.author | Viana, Patrik Ferreira | - |
dc.contributor.author | Bertollo, Luiz Antônio Carlos | - |
dc.contributor.author | Cioffi, Marcelo de Bello | - |
dc.contributor.author | Feldberg, Eliana | - |
dc.date.accessioned | 2020-06-15T21:38:10Z | - |
dc.date.available | 2020-06-15T21:38:10Z | - |
dc.date.issued | 2017 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/17023 | - |
dc.description.abstract | Ctenoluciidae is a Neotropical freshwater fish family whose representatives are known as bicudas. The genus Boulengerella contains 5 species, and 4 of them (B. cuvieri, B. lateristriga, B. lucius, and B. maculata) were cytogenetically analyzed in the present study by conventional and molecular procedures. All 4 species have a very similar karyotype, with 2n = 36 chromosomes (14 metacentrics + 16 submetacentrics + 6 subtelocentrics; FN = 72). However, the heterochromatin distribution pattern is species-specific. In all 4 species, the nucleolus organizer region is located in pair 18, as also confirmed by cytogenetic mapping of 18S rDNA. In turn, 5S rRNA genes are present in 2 chromosome pairs: in pair 1 of all 4 species, and in pair 10 of B. lateristriga, B. maculata, and B. cuvieri, but in pair 4 of B. lucius. The telomeric probe highlighted terminal regions in all chromosomes, as well as an interstitial centromeric sequence in pair 3 of the 3 first-mentioned species. Notably, a conspicuous heteromorphic secondary constriction in chromosomes 18 was found only in the males of the 3 species, rendering one of the homologs much larger than the other one. This feature, associated with a large 18S rDNA block and accumulation of telomeric sequences, suggests the presence of an XX/XY sex chromosome system in the analyzed Boulengerella species. © 2017 S. Karger AG, Basel. | en |
dc.language.iso | en | pt_BR |
dc.relation.ispartof | Volume 152, Número 4, Pags. 194-203 | pt_BR |
dc.rights | Restrito | * |
dc.subject | Dna 18s | en |
dc.subject | Repetitive Dna | en |
dc.subject | Rna 5s | en |
dc.subject | Ribosome Dna | en |
dc.subject | Rna 18s | en |
dc.subject | Rna 5s | en |
dc.subject | Animals Experiment | en |
dc.subject | Bioaccumulation | en |
dc.subject | Boulengerella Cuvieri | en |
dc.subject | Boulengerella Lateristriga | en |
dc.subject | Boulengerella Lucius | en |
dc.subject | Boulengerella Maculata | en |
dc.subject | Characiformes | en |
dc.subject | Chromosome 18 | en |
dc.subject | Chromosome Analysis | en |
dc.subject | Chromosome Nor | en |
dc.subject | Chromosome Painting | en |
dc.subject | Conserved Sequence | en |
dc.subject | Controlled Study | en |
dc.subject | Ctenolucius Beani | en |
dc.subject | Ctenolucius Hujeta | en |
dc.subject | Cytogenetics | en |
dc.subject | Female | en |
dc.subject | Genome Analysis | en |
dc.subject | Heterochromatin | en |
dc.subject | Karyotype | en |
dc.subject | Karyotype 46,xx | en |
dc.subject | Karyotype 46,xy | en |
dc.subject | Male | en |
dc.subject | Evolution, Molecular | en |
dc.subject | Nonhuman | en |
dc.subject | Priority Journal | en |
dc.subject | Sequence Analysis | en |
dc.subject | Sex Chromosome | en |
dc.subject | Species Difference | en |
dc.subject | Animals | en |
dc.subject | Characiformes | en |
dc.subject | Chromosome Banding Pattern | en |
dc.subject | Classification | en |
dc.subject | In Situ Hybridization, Fluorescence | en |
dc.subject | Genetics | en |
dc.subject | Genome | en |
dc.subject | Karyotyping | en |
dc.subject | Evolution, Molecular | en |
dc.subject | Nucleotide Repeat | en |
dc.subject | X Chromosome | en |
dc.subject | Y Chromosome | en |
dc.subject | Animal | en |
dc.subject | Characiformes | en |
dc.subject | Chromosome Banding | en |
dc.subject | Conserved Sequence | en |
dc.subject | Ribosomal Dna | en |
dc.subject | Evolution, Molecular | en |
dc.subject | Female | en |
dc.subject | Genome | en |
dc.subject | In Situ Hybridization, Fluorescence | en |
dc.subject | Karyotyping | en |
dc.subject | Male | en |
dc.subject | Repetitive Sequences, Nucleic Acid | en |
dc.subject | Rna, Ribosomal, 18s | en |
dc.subject | Rna, Ribosomal, 5s | en |
dc.subject | X Chromosome | en |
dc.subject | Y Chromosome | en |
dc.title | Evolutionary Relationships among Boulengerella Species (Ctenoluciidae, Characiformes): Genomic Organization of Repetitive DNAs and Highly Conserved Karyotypes | en |
dc.type | Artigo | pt_BR |
dc.identifier.doi | 10.1159/000480141 | - |
dc.publisher.journal | Cytogenetic and Genome Research | pt_BR |
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