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| Silva,Fernando Henrique Ramos; Pieczarka,Julio Cesar; Cardoso,Adauto Lima; Silva,Patrícia Corrêa da; Oliveira,Jonas Alves de; Nagamachi,Cleusa Yoshiko. |
| Cytogenetic studies were carried out on samples of Parapteronotus hasemani, Sternarchogiton preto and Sternarchorhamphus muelleri (Apteronotidae, Gymnotiformes) from the Amazon basin. The first two species exhibited both a 2n = 52 karyotype, but differed in their karyotypic formulae, distribution of constitutive heterochromatin, and chromosomal location of the NOR. The third species, Sternarchorhamphus muelleri, was found to have a 2n = 32 karyotype. In all three species the DAPI and chromomycin A3 staining results were consistent with the C-banding results and nucleolar organizer region (NOR) localization. The 18S rDNA probe confirmed that there was only one pair of ribosomal DNA cistron bearers per species. The telomeric probe did not reveal interstitial... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fluorochromes; FISH; Chromosomal rearrangements; Biodiversity. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000500006 |
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