Karyological characterization of four Neotropical fish species of the genus Hisonotus (Teleostei, Loricariidae, Hypoptopomatinae) from distinct Brazilian river basins
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1415-47572006000100013 http://hdl.handle.net/11449/30480 |
Resumo: | The karyotypes of four Hisonotus species (two provisionally-named species A and D, H. nigricauda, and H. leucofrenatus) were found to have the same diploid number of 2n = 54 and interstitial silver-staining nucleolus organizer regions (Ag-NORs) located on the long arm of the largest metacentric pair. The C-banding pattern appeared to be species-specific, with one group (H. nigricauda and the unnamed species A and D) being characterized by small amounts of positive C-banded segments and containing a sub-group (species A and D) identified by a large positive C-banded segment on a small metacentric chromosome pair. The second group contained different samples of H. leucofrenatus, characterized by a larger amount of C-band positive segments spread over several chromosome arms. Heterochromatin appears to play an important evolutionary role in chromosome differentiation in Hisonotus species, especially in H. leucofrenatus. The geographic isolation of several H. leucofrenatus populations seems to have favored chromosome evolution of each sample analyzed. |
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Karyological characterization of four Neotropical fish species of the genus Hisonotus (Teleostei, Loricariidae, Hypoptopomatinae) from distinct Brazilian river basinsfish cytogeneticskaryotypesAg-NORsC-bandchromosome evolutionThe karyotypes of four Hisonotus species (two provisionally-named species A and D, H. nigricauda, and H. leucofrenatus) were found to have the same diploid number of 2n = 54 and interstitial silver-staining nucleolus organizer regions (Ag-NORs) located on the long arm of the largest metacentric pair. The C-banding pattern appeared to be species-specific, with one group (H. nigricauda and the unnamed species A and D) being characterized by small amounts of positive C-banded segments and containing a sub-group (species A and D) identified by a large positive C-banded segment on a small metacentric chromosome pair. The second group contained different samples of H. leucofrenatus, characterized by a larger amount of C-band positive segments spread over several chromosome arms. Heterochromatin appears to play an important evolutionary role in chromosome differentiation in Hisonotus species, especially in H. leucofrenatus. The geographic isolation of several H. leucofrenatus populations seems to have favored chromosome evolution of each sample analyzed.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação Educacional de PenápolisUniversidade Estadual Paulista Júlio de Mesquita Filho Instituto de Biociências Departamento de MorfologiaUniversidade Estadual Paulista Júlio de Mesquita Filho Instituto de Biociências Departamento de MorfologiaSociedade Brasileira de GenéticaFundação Educacional de PenápolisUniversidade Estadual Paulista (Unesp)Andreata, Artur AntonioOliveira, Claudio [UNESP]Foresti, Fausto [UNESP]2014-05-20T15:17:28Z2014-05-20T15:17:28Z2006-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article62-66application/pdfhttp://dx.doi.org/10.1590/S1415-47572006000100013Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 29, n. 1, p. 62-66, 2006.1415-4757http://hdl.handle.net/11449/3048010.1590/S1415-47572006000100013S1415-47572006000100013S1415-47572006000100013.pdf0804793944846367SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGenetics and Molecular Biology1.4930,638info:eu-repo/semantics/openAccess2024-01-01T06:22:49Zoai:repositorio.unesp.br:11449/30480Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:52:55.340845Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Karyological characterization of four Neotropical fish species of the genus Hisonotus (Teleostei, Loricariidae, Hypoptopomatinae) from distinct Brazilian river basins |
title |
Karyological characterization of four Neotropical fish species of the genus Hisonotus (Teleostei, Loricariidae, Hypoptopomatinae) from distinct Brazilian river basins |
spellingShingle |
Karyological characterization of four Neotropical fish species of the genus Hisonotus (Teleostei, Loricariidae, Hypoptopomatinae) from distinct Brazilian river basins Andreata, Artur Antonio fish cytogenetics karyotypes Ag-NORs C-band chromosome evolution |
title_short |
Karyological characterization of four Neotropical fish species of the genus Hisonotus (Teleostei, Loricariidae, Hypoptopomatinae) from distinct Brazilian river basins |
title_full |
Karyological characterization of four Neotropical fish species of the genus Hisonotus (Teleostei, Loricariidae, Hypoptopomatinae) from distinct Brazilian river basins |
title_fullStr |
Karyological characterization of four Neotropical fish species of the genus Hisonotus (Teleostei, Loricariidae, Hypoptopomatinae) from distinct Brazilian river basins |
title_full_unstemmed |
Karyological characterization of four Neotropical fish species of the genus Hisonotus (Teleostei, Loricariidae, Hypoptopomatinae) from distinct Brazilian river basins |
title_sort |
Karyological characterization of four Neotropical fish species of the genus Hisonotus (Teleostei, Loricariidae, Hypoptopomatinae) from distinct Brazilian river basins |
author |
Andreata, Artur Antonio |
author_facet |
Andreata, Artur Antonio Oliveira, Claudio [UNESP] Foresti, Fausto [UNESP] |
author_role |
author |
author2 |
Oliveira, Claudio [UNESP] Foresti, Fausto [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Fundação Educacional de Penápolis Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Andreata, Artur Antonio Oliveira, Claudio [UNESP] Foresti, Fausto [UNESP] |
dc.subject.por.fl_str_mv |
fish cytogenetics karyotypes Ag-NORs C-band chromosome evolution |
topic |
fish cytogenetics karyotypes Ag-NORs C-band chromosome evolution |
description |
The karyotypes of four Hisonotus species (two provisionally-named species A and D, H. nigricauda, and H. leucofrenatus) were found to have the same diploid number of 2n = 54 and interstitial silver-staining nucleolus organizer regions (Ag-NORs) located on the long arm of the largest metacentric pair. The C-banding pattern appeared to be species-specific, with one group (H. nigricauda and the unnamed species A and D) being characterized by small amounts of positive C-banded segments and containing a sub-group (species A and D) identified by a large positive C-banded segment on a small metacentric chromosome pair. The second group contained different samples of H. leucofrenatus, characterized by a larger amount of C-band positive segments spread over several chromosome arms. Heterochromatin appears to play an important evolutionary role in chromosome differentiation in Hisonotus species, especially in H. leucofrenatus. The geographic isolation of several H. leucofrenatus populations seems to have favored chromosome evolution of each sample analyzed. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-01-01 2014-05-20T15:17:28Z 2014-05-20T15:17:28Z |
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/S1415-47572006000100013 Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 29, n. 1, p. 62-66, 2006. 1415-4757 http://hdl.handle.net/11449/30480 10.1590/S1415-47572006000100013 S1415-47572006000100013 S1415-47572006000100013.pdf 0804793944846367 |
url |
http://dx.doi.org/10.1590/S1415-47572006000100013 http://hdl.handle.net/11449/30480 |
identifier_str_mv |
Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 29, n. 1, p. 62-66, 2006. 1415-4757 10.1590/S1415-47572006000100013 S1415-47572006000100013 S1415-47572006000100013.pdf 0804793944846367 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Genetics and Molecular Biology 1.493 0,638 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
62-66 application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
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_ |
1808129369614319616 |