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| Lui,Roberto Laridondo; Blanco,Daniel Rodrigues; Martinez,Juliana de Fátima; Margarido,Vladimir Pavan; Venere,Paulo Cesar; Moreira Filho,Orlando. |
| Ageneiosus is the most widely distributed genus of the family Auchenipteridae among South American river basins. Although chromosome studies in the family are scarce, this genus has the largest number of analyzed species, with 2n = 54 to 56 chromosomes, differing from the rest of the family (2n = 58). This study aimed to analyze Ageneiosus inermis from the Araguaia River basin. The diploid number found was of 56 chromosomes. Heterochromatin was allocated in terminal region of most chromosomes, plus a pericentromeric heterochromatic block in pair 1, a pair distinguished by size in relation to other chromosomes pairs. AgNORs were detected in only one submetacentric chromosome pair, which was confirmed by FISH. 5S rDNA was present in only one metacentric... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: C banding; Cytogenetic Markers; [GATA]n sequence; RDNA-FISH; [TTAGGG]n sequence. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000200327 |
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| FALCIONE,CAMILA; HERNANDO,ALEJANDRA; BRESSA,MARÍA JOSÉ. |
| ABSTRACT We described the karyotypes of five snake taxa from Argentina: Erythrolamprus almadensis, E. ceii, E. poecilogyrus caesius, E. p. schotti and E. p. sublineatus, and also intergrading individuals between the last two subspecies by conventional staining, chromosome bandings and fluorescent in situ hybridization (FISH) with 28S ribosomal DNA probes. Erythrolamprus ceii and E. almadensis share a diploid chromosome number of 2n= 28, whereas in E. poecilogyrus intraspecific variations were observed: E. p. caesius has 2n= 28, E. p. schotti and E. p. sublineatus as well as in the intergrading individuals have 2n= 32. In E. almadensis and E. p. caesius, the 2nd and 6th chromosome pairs respectively are heteromorphic by size, morphology and C-banding... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ag-NOR; C-banding; Xenodontini; Fluorescent banding; RDNA-FISH; Sex chromosomes. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401417 |
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