Cytogenetic analysis of B chromosomes in one population of the fish Moenkhausia sanctaefilomenae (Steindachner, 1907) (Teleostei, Characiformes)

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorHashimoto, Diogo Teruo-
Autor(es): dc.creatorVoltolin, Tatiana Aparecida-
Autor(es): dc.creatorPaes, Ana Danyelle Noitel Valim de Arruda-
Autor(es): dc.creatorForesti, Fausto-
Autor(es): dc.creatorBortolozzi, Jehud-
Autor(es): dc.creatorPorto-Foresti, Fábio-
Data de aceite: dc.date.accessioned2025-08-21T20:11:45Z-
Data de disponibilização: dc.date.available2025-08-21T20:11:45Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2012-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3897/CompCytogen.v6i2.1769-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/226929-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/226929-
Descrição: dc.descriptionThe aim of this study was to characterize cytogenetically one population of the fish Moenkhausia sanctaefilomenae (Steindachner, 1907), with emphasis on the analysis of B chromosomes. The nucleolar activity in the B microchromosomes was characterized, and an analysis of mitotic instability of these microchromosomes was accomplished. The results showed a diploid chromosome number of 50 chromosomes. In all individuals, we observed the presence of B microchromosomes with intra- and inter-individual variability. The analysis of the nucleolus organizing regions (NORs) by silver nitrate staining demonstrated multiple NORs. We observed active sites of ribosomal DNA in the B microchromosomes, with a frequency of 20% in the analyzed cells, which shows gene activity in these chromosomal elements. The analysis of constitutive heterochromatin patterns showed that the B microchromosomes are heterochromatic or euchromatic, which demonstrates differentiation of DNA composition between these genomic elements. The calculation of the mitotic instability index implied that B chromosomes in this species might be in a final stage of instability. © Diogo Teruo Hashimoto et al.-
Descrição: dc.descriptionDepartamento de Ciências Biológicas Faculdade de Ciências Universidade Estadual Paulista (UNESP), Av. Eng. Luiz E. C. Coube, 17033-360, Bauru, SP-
Descrição: dc.descriptionDepartamento de Morfologia Instituto de Biociências Universidade Estadual Paulista (UNESP), Dist. Rubião Júnior, 18618-000, Botucatu, SP-
Descrição: dc.descriptionDepartamento de Ciências Biológicas Faculdade de Ciências Universidade Estadual Paulista (UNESP), Av. Eng. Luiz E. C. Coube, 17033-360, Bauru, SP-
Descrição: dc.descriptionDepartamento de Morfologia Instituto de Biociências Universidade Estadual Paulista (UNESP), Dist. Rubião Júnior, 18618-000, Botucatu, SP-
Formato: dc.format141-151-
Idioma: dc.languageen-
Relação: dc.relationComparative Cytogenetics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectFish cytogenetic-
Palavras-chave: dc.subjectMitotic instability-
Palavras-chave: dc.subjectNOR expression-
Palavras-chave: dc.subjectSupernumerary chromosomes-
Título: dc.titleCytogenetic analysis of B chromosomes in one population of the fish Moenkhausia sanctaefilomenae (Steindachner, 1907) (Teleostei, Characiformes)-
Tipo de arquivo: dc.typelivro digital-
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