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Campo DC | Valor | Idioma |
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dc.contributor.author | Eler, Eduardo Schmidt | - |
dc.contributor.author | Dergam, Jorge Abdala S. | - |
dc.contributor.author | Venere, Paulo Cesar | - |
dc.contributor.author | Paiva, Lílian C. | - |
dc.contributor.author | Miranda, Gabriela A. | - |
dc.contributor.author | Oliveira, Alessandro A. | - |
dc.date.accessioned | 2020-06-15T22:02:28Z | - |
dc.date.available | 2020-06-15T22:02:28Z | - |
dc.date.issued | 2007 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/18662 | - |
dc.description.abstract | We studied the karyotypes of two doradids, the rare and endangered Wertheimeria maculata and a derived Amazonian species, Hassar wilderi. Cytogenetic characterization was assessed using conventional staining (Giemsa), C-banding, and NOR banding. Both species had 2n = 58 chromosomes but differed in their chromosome formulae, 24 m + 14sm + 8st + 12a for W. maculata and 32 m + 16sm + 10st for H. wilderi. In W. maculata heterochromatin was mainly telomeric, and three chromosomes had a fully heterochromatic arm; in H. wilderi heterochromatin was also predominantly telomeric and evident in many more chromosomes. Hassar wilderi also presented one pair of homologues with a fully heterochromatic arm. In both species, nucleolar organizer regions were restricted to one pair of subtelocentric chromosomes. Assuming a basal position for W. maculata, we hypothesized that underlying conserved diploid and NOR-bearing chromosome numbers, chromosomal evolution in doradids has involved pericentric inversions and an increase of heterochromatic blocks. © 2006 Springer Science+Business Media B.V. | en |
dc.language.iso | en | pt_BR |
dc.relation.ispartof | Volume 130, Número 1, Pags. 99-103 | pt_BR |
dc.rights | Restrito | * |
dc.subject | Animals | en |
dc.subject | Catfish | en |
dc.subject | Chromosome | en |
dc.subject | Female | en |
dc.subject | Genetics | en |
dc.subject | Karyotyping | en |
dc.subject | Evolution, Molecular | en |
dc.subject | Phylogeny | en |
dc.subject | Animal | en |
dc.subject | Catfishes | en |
dc.subject | Chromosomes | en |
dc.subject | Evolution, Molecular | en |
dc.subject | Female | en |
dc.subject | Karyotyping | en |
dc.subject | Phylogeny | en |
dc.subject | Doradidae | en |
dc.subject | Hassar (catfish) | en |
dc.subject | Siluriformes | en |
dc.subject | Wertheimeria | en |
dc.title | The karyotypes of the thorny catfishes Wertheimeria maculata Steindachner, 1877 and Hassar wilderi Kindle, 1895 (Siluriformes: Doradidae) and their relevance in doradids chromosomal evolution | en |
dc.type | Artigo | pt_BR |
dc.identifier.doi | 10.1007/s10709-006-0023-4 | - |
dc.publisher.journal | Genetica | pt_BR |
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