2 documents found, page 1 of 1
Cytogenetic studies in fishes of the genera Hassar, Platydoras and Opsodoras (D...
Milhomem, Susana Suely Rodrigues; Souza, Augusto César Paes de; Nascimento, Aline Lira do; Carvalho, Jaime Ribeiro; Feldberg, ElianaWe studied the karyotypes of Hassar cf. orestis and an undescribed Hassar species from the Jarí River and Opsodoras ternetzi, H. orestis and Platydoras cf. costatus from the Xingú River, all with 2n = 58. Constitutive heterochromatin is located in the centromere in most metacentric pairs; in some chromosomes this banding is not present, or it is located on the whole chromosome arm or in the distal regions. The ...
Cytogenetic analysis on pterophyllum scalare (perciformes, cichlidae) from jari...
Barros, Regina Maria de Souza; Pieczarka, Júlio César; Nagamachi, Cleusa Yoshiko; Feldberg, Eliana; Nascimento, Aline L; Cesar, Augusto C.G.Cytogenetic studies were carried out on eighteen wild specimens of Pterophyllum scalare from Jari River, in Pará state, and the results were compared to literature. Mitotic chromosomes were obtained from kidney cells and the analysis was done using: C-banding, Ag-NOR staining, Chromomycin A3/DAPI sequential staining and fluorochrome in situ hybridization with human telomere probes. All individuals showed a chro...