Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae)
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3897/compcytogen.v16.i2.72190 http://hdl.handle.net/11449/241886 |
Resumo: | The 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 |
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Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae)Electric fishFish cytogeneticsFreshwater fishesKaryotype evolutionRepetitive dnaThe 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 GymnotiformesConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Instituto de Investigación Multidisciplinar en Ciencia y Tecnología Universidad de La SerenaDepartamento de Biología Universidad de La SerenaDepartamento de Biologia Estrutural e Funcional Universidade Estadual Paulista Júlio de Mesquita Filho, SPDepartamento de Biologia Estrutural e Funcional Universidade Estadual Paulista Júlio de Mesquita Filho, SPCNPq: 306054/2006-0Universidad de La SerenaUniversidade Estadual Paulista (UNESP)Araya-Jaime, Cristian Andrésde Andrade Silva, Duílio Mazzoni Zerbinato [UNESP]da Silva, Luís Ricardo Ribeiro [UNESP]do Nascimento, Cristiano Neves [UNESP]Oliveira, Claudio [UNESP]Foresti, Fausto [UNESP]2023-03-02T02:50:00Z2023-03-02T02:50:00Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article127-142http://dx.doi.org/10.3897/compcytogen.v16.i2.72190Comparative Cytogenetics, v. 16, n. 2, p. 127-142, 2022.1993-078X1993-0771http://hdl.handle.net/11449/24188610.3897/compcytogen.v16.i2.721902-s2.0-85130840062Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengComparative Cytogeneticsinfo:eu-repo/semantics/openAccess2023-03-02T02:50:01Zoai:repositorio.unesp.br:11449/241886Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:42:00.168892Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae) |
title |
Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae) |
spellingShingle |
Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae) Araya-Jaime, Cristian Andrés Electric fish Fish cytogenetics Freshwater fishes Karyotype evolution Repetitive dna |
title_short |
Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae) |
title_full |
Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae) |
title_fullStr |
Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae) |
title_full_unstemmed |
Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae) |
title_sort |
Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae) |
author |
Araya-Jaime, Cristian Andrés |
author_facet |
Araya-Jaime, Cristian Andrés de Andrade Silva, Duílio Mazzoni Zerbinato [UNESP] da Silva, Luís Ricardo Ribeiro [UNESP] do Nascimento, Cristiano Neves [UNESP] Oliveira, Claudio [UNESP] Foresti, Fausto [UNESP] |
author_role |
author |
author2 |
de Andrade Silva, Duílio Mazzoni Zerbinato [UNESP] da Silva, Luís Ricardo Ribeiro [UNESP] do Nascimento, Cristiano Neves [UNESP] Oliveira, Claudio [UNESP] Foresti, Fausto [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidad de La Serena Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Araya-Jaime, Cristian Andrés de Andrade Silva, Duílio Mazzoni Zerbinato [UNESP] da Silva, Luís Ricardo Ribeiro [UNESP] do Nascimento, Cristiano Neves [UNESP] Oliveira, Claudio [UNESP] Foresti, Fausto [UNESP] |
dc.subject.por.fl_str_mv |
Electric fish Fish cytogenetics Freshwater fishes Karyotype evolution Repetitive dna |
topic |
Electric fish Fish cytogenetics Freshwater fishes Karyotype evolution Repetitive dna |
description |
The 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 |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-01-01 2023-03-02T02:50:00Z 2023-03-02T02:50:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.3897/compcytogen.v16.i2.72190 Comparative Cytogenetics, v. 16, n. 2, p. 127-142, 2022. 1993-078X 1993-0771 http://hdl.handle.net/11449/241886 10.3897/compcytogen.v16.i2.72190 2-s2.0-85130840062 |
url |
http://dx.doi.org/10.3897/compcytogen.v16.i2.72190 http://hdl.handle.net/11449/241886 |
identifier_str_mv |
Comparative Cytogenetics, v. 16, n. 2, p. 127-142, 2022. 1993-078X 1993-0771 10.3897/compcytogen.v16.i2.72190 2-s2.0-85130840062 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Comparative Cytogenetics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
127-142 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128267793727488 |