Consulta: subjectFacets:"Geophagus Genética"
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Data/hora: 13/06/2024 12:53:17

Description of the karyotype of Geophagus cf. proximus (Perciformes, Cichlidae, Geophaginae) - doi: 10.4025/actascibiolsci.v35i1.11711
Provedor de dados: 3
Autores: Rocha, Carlos Alberto Machado da; Instituto Federal de Educação, Ciência e Tecnologia do Pará; Souza, Augusto César Paes de; Instituto Federal de Educação, Ciência e Tecnologia do Pará; Rayol, Ramayanna da Silva; Instituto Federal de Educação, Ciência e Tecnologia do Pará; Ribeiro, Helem Ferreira; Instituto Federal de Educação, Ciência e Tecnologia do Pará.
This study described the karyotype of Geophagus cf. proximus. Specimens were collected in Água Preta Lake, Parque Ambiental de Belém, Pará State, Brazil. The karyotype were 2n = 48 chromosomes (FN = 60: 12M/SM+36ST/A) and no sexual chromosome differentiation. C-banding showed centromeric staining in all chromosomes. The first chromosome pair, besides centromeric coloration, presented a totally heterochromatic long arm. The nucleolus organizer regions (NORs) were studied by means of AgNO3. NORs were located at the short arm of the second chromosome pair.  
Palavras-chave: 2.02.04.00-0 cytogenetic; C-banding; Ag-NOR technique; Geophagus Genética.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11711