Encontrados 14 documentos, a visualizar página 1 de 2
Meiotic analyses show adaptations to maintenance of fertility in X1Y1X2Y2X3Y3X4...
Noronha, Renata Coelho Rodrigues; de Almeida, Bruno Rafael Ribeiro; da Costa, Marlyson Jeremias Rodrigues; Nagamachi, Cleusa YoshikoMade available in DSpace on 2021-06-25T11:04:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-12-01; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Heterozygous chromosomal rearrangements can result in failures during the meiotic cycle and the apoptosis of germline, making carrier individuals infertile. The Amazon frog Leptodactylus pentadactylus has a meiotic multivalent, compos...
Molecular cytogenetics characterization of Rhinoclemmys punctularia (Testudines...
Cavalcante, Manoella Gemaque; Souza, Luciano Farias; Vicari, Marcelo Ricardo; Matos de Bastos, Carlos Eduardo; Sousa, Jaime Viana deMade available in DSpace on 2020-12-10T19:55:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-05-15; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); National Bank for Economic and Social Development - BNDES; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); The wide variation found in the size of eukaryotic genomes is largely related to the accumulation of repet...
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 ...
Different cytotypes in fi shes of the genus Hypostomus Lcépède, 1803, (Silurifo...
Milhomem, Susana Suely Rodrigues; Castro, R. R.; Nagamachi, Cleusa Yoshiko; Souza, Augusto C.Paes de; Feldberg, Eliana; Pieczarka, Júlio CésarWe analyzed the karyotypes of three specimens of fi shes of the genus Hypostomus Lacépède, 1803 (Loricaridae) from Xingu River (Amazon region). We used conventional staining techniques, including C-banding, Ag-NOR staining, CMA3- and DAPI-banding. Each specimen had a different cytotype: Hypostomus sp. Xingu-1 had 2n=64 (32M/SM, 32ST/A); Hypostomus sp. Xingu-2 has 2n=66 (32M/SM, 34ST/A), and Hypostomus sp. Xingu...
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...
Unexpected species diversity in electric eels with a description of the stronge...
Santana, Carlos David de; Crampton, William Gareth Richard; Dillman, Casey B.; Frederico, Renata Guimarães; Sabaj, Mark Henry; Covain, RaphaelIs there only one electric eel species? For two and a half centuries since its description by Linnaeus, Electrophorus electricus has captivated humankind by its capacity to generate strong electric discharges. Despite the importance of Electrophorus in multiple fields of science, the possibility of additional species-level diversity in the genus, which could also reveal a hidden variety of substances and bioele...
Identifica??o de uma col?nia de longo prazo de Proechimys no Instituto Evandro ...
Ribeiro, Nelson Antonio Bail?o; Pieczarka, Julio Cesar; Soares, Manoel do Carmo Pereira; Nagamachi, Cleusa YoshikoCoordena??o de Aperfei?oamento de Pessoal de N?vel Superior, Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico, Universidade Federal do Par?, Instituto Evandro Chagas.; Minist?rio da Sa?de. Secretaria de Vigil?ncia em Sa?de. Instituto Evandro Chagas. Ananindeua, PA, Brasil.; Universidade Federal do Par?. Instituto de Ci?ncias Biol?gicas. Laborat?rio de Citogen?tica. Bel?m, PA, Brasil / Conselho Naci...
In Situ Localization of Ribosomal Sites in Peckoltia and Ancistomus (Loricariid...
Pety, Ananda Marques; Cardoso, Adauto Lima [UNESP]; Nagamachi, Cleusa Yoshiko; Pieczarka, Julio Cesar; Sousa, Leandro Melo deMade available in DSpace on 2018-11-26T17:51:59Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-06-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Banco Nacional de Desenvolvimento Economico e Social-BNDES; Loricariidae is a diverse group of fish fr...
Particular Chromosomal Distribution of Microsatellites in Five Species of the G...
Utsunomia, Ricardo [UNESP]; Melo, Silvana [UNESP]; Scacchetti, Priscilla Cardim [UNESP]; Oliveira, Claudio [UNESP]; Machado, Milla de AndradeMade available in DSpace on 2018-11-26T17:52:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-08-01; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Microsatellites show great abundance in eukaryotic genomes, although distinct chromosomal distribution...
Karyotypic Evolution and Chromosomal Organization of Repetitive DNA Sequences i...
Ayres-Alves, Thayana; Cardoso, Adauto Lima [UNESP]; Nagamachi, Cleusa Yoshiko; Sousa, Leandro Melo de; Pieczarka, Julio CesarMade available in DSpace on 2018-11-26T17:34:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-06-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Banco Nacional de Desenvolvimento Economico e Social-BNDS; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Loricariidae family comprises the greatest ...