A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae)
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1984-46702012000200008 http://hdl.handle.net/11449/18448 |
Resumo: | Individual samples from five populations of the characid fish Astyanax scabripinnis (Jenyns, 1842) from the Tietê and Paranapanema river basins (Brazil) were studied. All individuals analyzed presented 50 chromosomes but three different karyotypic forms were observed. Additionally, some individuals of one karyomorph presented a macro supernumerary chromosome. No chromosomal differentiation was observed between males and females in any sample analyzed. C-banding revealed two distinct distribution patterns in these populations in which strong terminally located heterochromatic blocks were detected in the long arms of some chromosomes of the specimens from Cascatinha, Cintra, and Funari streams, whereas populations of the Capão Bonito stream and the Barbosa waterfall revealed less evident heterochromatic blocks on the chromosomes. The comparative study of the 18S rDNA localization by fluorescent in situ hybridization, and detection of active nucleolus organizing regions by silver stain (Ag-NORs) showed differences in rDNA content and expression of this gene site among the individuals analyzed. Chromosome mapping of the 5S rDNA revealed the presence of four sites located in two distinct chromosomal pairs, with no apparent differences among karyomorphs. Based on the biogeographical distribution and specific biological characteristics of the species, the data focus on the chromosome differentiation mechanisms involved in the speciation process acting on the populations of the Astyanax scabripinnis species complex. |
id |
UNSP_3efd9fae5736840ff777fda7a308529e |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/18448 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae)Chromosome markerskaryoevolutionkaryomorphsnucleolus organizer regionIndividual samples from five populations of the characid fish Astyanax scabripinnis (Jenyns, 1842) from the Tietê and Paranapanema river basins (Brazil) were studied. All individuals analyzed presented 50 chromosomes but three different karyotypic forms were observed. Additionally, some individuals of one karyomorph presented a macro supernumerary chromosome. No chromosomal differentiation was observed between males and females in any sample analyzed. C-banding revealed two distinct distribution patterns in these populations in which strong terminally located heterochromatic blocks were detected in the long arms of some chromosomes of the specimens from Cascatinha, Cintra, and Funari streams, whereas populations of the Capão Bonito stream and the Barbosa waterfall revealed less evident heterochromatic blocks on the chromosomes. The comparative study of the 18S rDNA localization by fluorescent in situ hybridization, and detection of active nucleolus organizing regions by silver stain (Ag-NORs) showed differences in rDNA content and expression of this gene site among the individuals analyzed. Chromosome mapping of the 5S rDNA revealed the presence of four sites located in two distinct chromosomal pairs, with no apparent differences among karyomorphs. Based on the biogeographical distribution and specific biological characteristics of the species, the data focus on the chromosome differentiation mechanisms involved in the speciation process acting on the populations of the Astyanax scabripinnis species complex.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Estadual Paulista Departamento de MorfologiaUniversidade Estadual de Ponta Grossa Departamento de Biologia Molecular e Estrutural e GenéticaUniversidad de Granada Facultad de Ciencias Departmento de GenéticaUniversidade Estadual Paulista Departamento de MorfologiaFAPESP: 08/57067-1Sociedade Brasileira de ZoologiaUniversidade Estadual Paulista (Unesp)Universidade Estadual de Ponta Grossa (UEPG)Universidad de GranadaSantos, Natália M. [UNESP]Ferreira-Neto, Maressa [UNESP]Artoni, Roberto F.Vicari, Marcelo R.Bakkali, MohammedOliveira, Claudio de [UNESP]Foresti, Fausto [UNESP]2014-05-20T13:51:33Z2014-05-20T13:51:33Z2012-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article159-166application/pdfhttp://dx.doi.org/10.1590/S1984-46702012000200008Zoologia (Curitiba). Sociedade Brasileira de Zoologia, v. 29, n. 2, p. 159-166, 2012.1984-4670http://hdl.handle.net/11449/1844810.1590/S1984-46702012000200008S1984-46702012000200008WOS:000303976100008S1984-46702012000200008.pdf080479394484636702974198821611140000-0002-4143-7212SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengZoologia (Curitiba)0,405info:eu-repo/semantics/openAccess2023-11-11T06:09:57Zoai:repositorio.unesp.br:11449/18448Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:22:22.649688Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae) |
title |
A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae) |
spellingShingle |
A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae) Santos, Natália M. [UNESP] Chromosome markers karyoevolution karyomorphs nucleolus organizer region |
title_short |
A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae) |
title_full |
A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae) |
title_fullStr |
A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae) |
title_full_unstemmed |
A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae) |
title_sort |
A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae) |
author |
Santos, Natália M. [UNESP] |
author_facet |
Santos, Natália M. [UNESP] Ferreira-Neto, Maressa [UNESP] Artoni, Roberto F. Vicari, Marcelo R. Bakkali, Mohammed Oliveira, Claudio de [UNESP] Foresti, Fausto [UNESP] |
author_role |
author |
author2 |
Ferreira-Neto, Maressa [UNESP] Artoni, Roberto F. Vicari, Marcelo R. Bakkali, Mohammed Oliveira, Claudio de [UNESP] Foresti, Fausto [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Estadual de Ponta Grossa (UEPG) Universidad de Granada |
dc.contributor.author.fl_str_mv |
Santos, Natália M. [UNESP] Ferreira-Neto, Maressa [UNESP] Artoni, Roberto F. Vicari, Marcelo R. Bakkali, Mohammed Oliveira, Claudio de [UNESP] Foresti, Fausto [UNESP] |
dc.subject.por.fl_str_mv |
Chromosome markers karyoevolution karyomorphs nucleolus organizer region |
topic |
Chromosome markers karyoevolution karyomorphs nucleolus organizer region |
description |
Individual samples from five populations of the characid fish Astyanax scabripinnis (Jenyns, 1842) from the Tietê and Paranapanema river basins (Brazil) were studied. All individuals analyzed presented 50 chromosomes but three different karyotypic forms were observed. Additionally, some individuals of one karyomorph presented a macro supernumerary chromosome. No chromosomal differentiation was observed between males and females in any sample analyzed. C-banding revealed two distinct distribution patterns in these populations in which strong terminally located heterochromatic blocks were detected in the long arms of some chromosomes of the specimens from Cascatinha, Cintra, and Funari streams, whereas populations of the Capão Bonito stream and the Barbosa waterfall revealed less evident heterochromatic blocks on the chromosomes. The comparative study of the 18S rDNA localization by fluorescent in situ hybridization, and detection of active nucleolus organizing regions by silver stain (Ag-NORs) showed differences in rDNA content and expression of this gene site among the individuals analyzed. Chromosome mapping of the 5S rDNA revealed the presence of four sites located in two distinct chromosomal pairs, with no apparent differences among karyomorphs. Based on the biogeographical distribution and specific biological characteristics of the species, the data focus on the chromosome differentiation mechanisms involved in the speciation process acting on the populations of the Astyanax scabripinnis species complex. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-04-01 2014-05-20T13:51:33Z 2014-05-20T13:51:33Z |
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/10.1590/S1984-46702012000200008 Zoologia (Curitiba). Sociedade Brasileira de Zoologia, v. 29, n. 2, p. 159-166, 2012. 1984-4670 http://hdl.handle.net/11449/18448 10.1590/S1984-46702012000200008 S1984-46702012000200008 WOS:000303976100008 S1984-46702012000200008.pdf 0804793944846367 0297419882161114 0000-0002-4143-7212 |
url |
http://dx.doi.org/10.1590/S1984-46702012000200008 http://hdl.handle.net/11449/18448 |
identifier_str_mv |
Zoologia (Curitiba). Sociedade Brasileira de Zoologia, v. 29, n. 2, p. 159-166, 2012. 1984-4670 10.1590/S1984-46702012000200008 S1984-46702012000200008 WOS:000303976100008 S1984-46702012000200008.pdf 0804793944846367 0297419882161114 0000-0002-4143-7212 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Zoologia (Curitiba) 0,405 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
159-166 application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zoologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zoologia |
dc.source.none.fl_str_mv |
SciELO 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_ |
1808128799836995584 |