Comparative cytogenetics of ten species of cichlid fishes (Teleostei, Cichlidae) from the Araguaia River system, Brazil, by conventional cytogenetic methods

Detalhes bibliográficos
Autor(a) principal: Valente, G. Targino [UNESP]
Data de Publicação: 2012
Outros Autores: Vitorino, C. de Andrade, Cabral-de-Mello, D. C. [UNESP], Oliveira, C. [UNESP], Souza, I. Lima, Martins, C. [UNESP], Venere, P. C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3897/CompCytogen.v6i2.1739
http://hdl.handle.net/11449/226928
Resumo: Cichlids represent one of the most species-rich families of fishes and have attracted the attention of evolutionary biologists due to the rapid radiation occurring in some groups and the importance of some species in the world aquaculture. Cytogenetic analysis was conducted in 10 cichlid species from the Araguaia River, Amazon Basin, Brazil. The chromosome number was 2n=48 for all analyzed species except for Laetacara araguaiae Ottoni et Costa, 2009 (2n=44). Chromosomal polymorphism was detected only in Geophagus proximus (Castelnau, 1855), which exhibits an extra large submetacentric and and a dot-like chromosomes. Moreover, the C-banding revealed a general pericentromeric heterochromatic pattern and some additional blocks for some species. The heterochromatic blocks corresponding to AgNOR bearing regions were observed in all species and also corresponded to CMA3 positive blocks, which were observed in terminal regions. Besides the general conserved chromosomal and heterochromatin patterns for South American cichlids, the presence of GC-rich heterochromatin was quite different in the species Biotodoma cupido (Heckel, 1840), Geophagus proximus, Retroculus lapidifer (Castelnau, 1855), Crenicichla strigata Günther, 1862 and Heros efasciatus Heckel, 1840. The results suggest that independent events of heterochromatin modification occurred during chromosome evolution in the group, regardless of the conservation of macro-chromosomal structure. © G. Targino Valente et al.
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spelling Comparative cytogenetics of ten species of cichlid fishes (Teleostei, Cichlidae) from the Araguaia River system, Brazil, by conventional cytogenetic methodsChromosome evolutionCichlidaeFish chromosomesGenomeCichlids represent one of the most species-rich families of fishes and have attracted the attention of evolutionary biologists due to the rapid radiation occurring in some groups and the importance of some species in the world aquaculture. Cytogenetic analysis was conducted in 10 cichlid species from the Araguaia River, Amazon Basin, Brazil. The chromosome number was 2n=48 for all analyzed species except for Laetacara araguaiae Ottoni et Costa, 2009 (2n=44). Chromosomal polymorphism was detected only in Geophagus proximus (Castelnau, 1855), which exhibits an extra large submetacentric and and a dot-like chromosomes. Moreover, the C-banding revealed a general pericentromeric heterochromatic pattern and some additional blocks for some species. The heterochromatic blocks corresponding to AgNOR bearing regions were observed in all species and also corresponded to CMA3 positive blocks, which were observed in terminal regions. Besides the general conserved chromosomal and heterochromatin patterns for South American cichlids, the presence of GC-rich heterochromatin was quite different in the species Biotodoma cupido (Heckel, 1840), Geophagus proximus, Retroculus lapidifer (Castelnau, 1855), Crenicichla strigata Günther, 1862 and Heros efasciatus Heckel, 1840. The results suggest that independent events of heterochromatin modification occurred during chromosome evolution in the group, regardless of the conservation of macro-chromosomal structure. © G. Targino Valente et al.Laboratory of Integrative Genomics Department of Morphology Institute of Biosciences UNESP-Sao Paulo State University, 18618-970 Botucatu, Sao PauloLaboratory of Ichthyology Institute of Biological Sciences and Health Federal University of Mato Grosso, Campus of Araguaia, 78698-000, Pontal do Araguaia, Mato GrossoDepartment of Biology Institute of Biosciences UNESP-Sao Paulo State University, 13506-900, Rio Claro, Sao PauloLaboratory of Biology and Fish Genetics Department of Morphology Institute of Biosciences UNESP-Sao Paulo State University, 18618-970, Botucatu, Sao PauloLaboratory of Integrative Genomics Department of Morphology Institute of Biosciences UNESP-Sao Paulo State University, 18618-970 Botucatu, Sao PauloDepartment of Biology Institute of Biosciences UNESP-Sao Paulo State University, 13506-900, Rio Claro, Sao PauloLaboratory of Biology and Fish Genetics Department of Morphology Institute of Biosciences UNESP-Sao Paulo State University, 18618-970, Botucatu, Sao PauloUniversidade Estadual Paulista (UNESP)Federal University of Mato GrossoValente, G. Targino [UNESP]Vitorino, C. de AndradeCabral-de-Mello, D. C. [UNESP]Oliveira, C. [UNESP]Souza, I. LimaMartins, C. [UNESP]Venere, P. C.2022-04-29T04:22:55Z2022-04-29T04:22:55Z2012-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article163-181http://dx.doi.org/10.3897/CompCytogen.v6i2.1739Comparative Cytogenetics, v. 6, n. 2, p. 163-181, 2012.1993-078X1993-0771http://hdl.handle.net/11449/22692810.3897/CompCytogen.v6i2.17392-s2.0-84864763085Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengComparative Cytogeneticsinfo:eu-repo/semantics/openAccess2022-04-29T04:22:55Zoai:repositorio.unesp.br:11449/226928Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:11:04.702909Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Comparative cytogenetics of ten species of cichlid fishes (Teleostei, Cichlidae) from the Araguaia River system, Brazil, by conventional cytogenetic methods
title Comparative cytogenetics of ten species of cichlid fishes (Teleostei, Cichlidae) from the Araguaia River system, Brazil, by conventional cytogenetic methods
spellingShingle Comparative cytogenetics of ten species of cichlid fishes (Teleostei, Cichlidae) from the Araguaia River system, Brazil, by conventional cytogenetic methods
Valente, G. Targino [UNESP]
Chromosome evolution
Cichlidae
Fish chromosomes
Genome
title_short Comparative cytogenetics of ten species of cichlid fishes (Teleostei, Cichlidae) from the Araguaia River system, Brazil, by conventional cytogenetic methods
title_full Comparative cytogenetics of ten species of cichlid fishes (Teleostei, Cichlidae) from the Araguaia River system, Brazil, by conventional cytogenetic methods
title_fullStr Comparative cytogenetics of ten species of cichlid fishes (Teleostei, Cichlidae) from the Araguaia River system, Brazil, by conventional cytogenetic methods
title_full_unstemmed Comparative cytogenetics of ten species of cichlid fishes (Teleostei, Cichlidae) from the Araguaia River system, Brazil, by conventional cytogenetic methods
title_sort Comparative cytogenetics of ten species of cichlid fishes (Teleostei, Cichlidae) from the Araguaia River system, Brazil, by conventional cytogenetic methods
author Valente, G. Targino [UNESP]
author_facet Valente, G. Targino [UNESP]
Vitorino, C. de Andrade
Cabral-de-Mello, D. C. [UNESP]
Oliveira, C. [UNESP]
Souza, I. Lima
Martins, C. [UNESP]
Venere, P. C.
author_role author
author2 Vitorino, C. de Andrade
Cabral-de-Mello, D. C. [UNESP]
Oliveira, C. [UNESP]
Souza, I. Lima
Martins, C. [UNESP]
Venere, P. C.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Federal University of Mato Grosso
dc.contributor.author.fl_str_mv Valente, G. Targino [UNESP]
Vitorino, C. de Andrade
Cabral-de-Mello, D. C. [UNESP]
Oliveira, C. [UNESP]
Souza, I. Lima
Martins, C. [UNESP]
Venere, P. C.
dc.subject.por.fl_str_mv Chromosome evolution
Cichlidae
Fish chromosomes
Genome
topic Chromosome evolution
Cichlidae
Fish chromosomes
Genome
description Cichlids represent one of the most species-rich families of fishes and have attracted the attention of evolutionary biologists due to the rapid radiation occurring in some groups and the importance of some species in the world aquaculture. Cytogenetic analysis was conducted in 10 cichlid species from the Araguaia River, Amazon Basin, Brazil. The chromosome number was 2n=48 for all analyzed species except for Laetacara araguaiae Ottoni et Costa, 2009 (2n=44). Chromosomal polymorphism was detected only in Geophagus proximus (Castelnau, 1855), which exhibits an extra large submetacentric and and a dot-like chromosomes. Moreover, the C-banding revealed a general pericentromeric heterochromatic pattern and some additional blocks for some species. The heterochromatic blocks corresponding to AgNOR bearing regions were observed in all species and also corresponded to CMA3 positive blocks, which were observed in terminal regions. Besides the general conserved chromosomal and heterochromatin patterns for South American cichlids, the presence of GC-rich heterochromatin was quite different in the species Biotodoma cupido (Heckel, 1840), Geophagus proximus, Retroculus lapidifer (Castelnau, 1855), Crenicichla strigata Günther, 1862 and Heros efasciatus Heckel, 1840. The results suggest that independent events of heterochromatin modification occurred during chromosome evolution in the group, regardless of the conservation of macro-chromosomal structure. © G. Targino Valente et al.
publishDate 2012
dc.date.none.fl_str_mv 2012-01-01
2022-04-29T04:22:55Z
2022-04-29T04:22:55Z
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.v6i2.1739
Comparative Cytogenetics, v. 6, n. 2, p. 163-181, 2012.
1993-078X
1993-0771
http://hdl.handle.net/11449/226928
10.3897/CompCytogen.v6i2.1739
2-s2.0-84864763085
url http://dx.doi.org/10.3897/CompCytogen.v6i2.1739
http://hdl.handle.net/11449/226928
identifier_str_mv Comparative Cytogenetics, v. 6, n. 2, p. 163-181, 2012.
1993-078X
1993-0771
10.3897/CompCytogen.v6i2.1739
2-s2.0-84864763085
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 163-181
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
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