Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae)

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidad de La Serena-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorAraya-Jaime, Cristian Andrés-
Autor(es): dc.creatorde Andrade Silva, Duílio Mazzoni Zerbinato-
Autor(es): dc.creatorda Silva, Luís Ricardo Ribeiro-
Autor(es): dc.creatordo Nascimento, Cristiano Neves-
Autor(es): dc.creatorOliveira, Claudio-
Autor(es): dc.creatorForesti, Fausto-
Data de aceite: dc.date.accessioned2025-08-21T15:17:12Z-
Data de disponibilização: dc.date.available2025-08-21T15:17:12Z-
Data de envio: dc.date.issued2023-03-02-
Data de envio: dc.date.issued2023-03-02-
Data de envio: dc.date.issued2021-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3897/compcytogen.v16.i2.72190-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/241886-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/241886-
Descrição: dc.descriptionThe genus Eigenmannia Jordan et Evermann,1896 includes electric fishes endemic to the Neotropical region with extensive karyotype variability and occurrence of different sex chromosome systems, however, cytogenetic studies within this group are restricted to few species. Here, we describe the karyotypes of Eigenmannia limbata (Schreiner et Miranda Ribeiro, 1903) and E. microstoma (Reinhardt, 1852) and the chromosomal locations of 5S and 18S rDNAs (ribosomal RNA genes) and U2 snDNA (small nuclear RNA gene). Among them, 18S rDNA sites were situated in only one chromosomal pair in both species, and co-localized with 5S rDNA in E. microstoma. On the other hand, 5S rDNA and U2 snRNA sites were observed on several chromosomes, with variation in the number of sites between species under study. These two repetitive DNAs were observed co-localized in one chromosomal pair in E. limbata and in four pairs in E. microstoma. Our study shows a new case of association of these two types of repetitive DNA in the genome of Gymnotiformes-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionInstituto de Investigación Multidisciplinar en Ciencia y Tecnología Universidad de La Serena-
Descrição: dc.descriptionDepartamento de Biología Universidad de La Serena-
Descrição: dc.descriptionDepartamento de Biologia Estrutural e Funcional Universidade Estadual Paulista Júlio de Mesquita Filho, SP-
Descrição: dc.descriptionDepartamento de Biologia Estrutural e Funcional Universidade Estadual Paulista Júlio de Mesquita Filho, SP-
Descrição: dc.descriptionCNPq: 306054/2006-0-
Formato: dc.format127-142-
Idioma: dc.languageen-
Relação: dc.relationComparative Cytogenetics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectElectric fish-
Palavras-chave: dc.subjectFish cytogenetics-
Palavras-chave: dc.subjectFreshwater fishes-
Palavras-chave: dc.subjectKaryotype evolution-
Palavras-chave: dc.subjectRepetitive dna-
Título: dc.titleKaryotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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