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: Targino Valente, G. [UNESP]
Data de Publicação: 2012
Outros Autores: de Andrade Vitorino, C., Cabral-de-Mello, Diogo Cavalcanti [UNESP], Oliveira, C., Lima Souza, I., 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/11449/18768
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 CMA(3) 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 cupid (Heckel, 1840), Geophagus proximus, Retroculus lapidifer (Castelnau, 1855), Crenicichla strigata Gunther, 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.
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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 evolutionfish chromosomesgenomeCichlidaeCichlids 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 CMA(3) 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 cupid (Heckel, 1840), Geophagus proximus, Retroculus lapidifer (Castelnau, 1855), Crenicichla strigata Gunther, 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.Fundação de Amparo à Pesquisa do Estado de Mato Grosso (FAPEMAT)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Fed Mato Grosso, Inst Biol Sci & Hlth, Lab Ichthyol, BR-78698000 Pontal do Araguaia, Mato Grosso, BrazilUNESP São Paulo State Univ, Dept Morphol, Inst Biosci, Lab Integrat Genom, BR-18618970 Botucatu, SP, BrazilUNESP São Paulo State Univ, Inst Biosci, Dept Biol, BR-13506900 Rio Claro, SP, BrazilUNESP São Paulo State Univ, Inst Biosci, Dept Morphol, Lab Biol & Fish Genet, BR-18618970 Botucatu, SP, BrazilUNESP São Paulo State Univ, Dept Morphol, Inst Biosci, Lab Integrat Genom, BR-18618970 Botucatu, SP, BrazilUNESP São Paulo State Univ, Inst Biosci, Dept Biol, BR-13506900 Rio Claro, SP, BrazilUNESP São Paulo State Univ, Inst Biosci, Dept Morphol, Lab Biol & Fish Genet, BR-18618970 Botucatu, SP, BrazilZoological InstUniv Fed Mato GrossoUniversidade Estadual Paulista (Unesp)Targino Valente, G. [UNESP]de Andrade Vitorino, C.Cabral-de-Mello, Diogo Cavalcanti [UNESP]Oliveira, C.Lima Souza, I.Martins, C. [UNESP]Venere, P. C.2014-05-20T13:52:35Z2014-05-20T13:52:35Z2012-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article163-181application/pdfhttp://dx.doi.org/10.3897/CompCytogen.v6i2.1739Comparative Cytogenetics. St Petersburg: Zoological Inst, v. 6, n. 2, p. 163-181, 2012.1993-0771http://hdl.handle.net/11449/1876810.3897/CompCytogen.v6i2.1739WOS:000307194600006WOS000307194600006.pdf88588006994253520000-0003-3534-974XWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengComparative Cytogenetics1.3190,431info:eu-repo/semantics/openAccess2023-12-21T06:21:30Zoai:repositorio.unesp.br:11449/18768Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:54:59.380167Repositório 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
Targino Valente, G. [UNESP]
chromosome evolution
fish chromosomes
genome
Cichlidae
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 Targino Valente, G. [UNESP]
author_facet Targino Valente, G. [UNESP]
de Andrade Vitorino, C.
Cabral-de-Mello, Diogo Cavalcanti [UNESP]
Oliveira, C.
Lima Souza, I.
Martins, C. [UNESP]
Venere, P. C.
author_role author
author2 de Andrade Vitorino, C.
Cabral-de-Mello, Diogo Cavalcanti [UNESP]
Oliveira, C.
Lima Souza, I.
Martins, C. [UNESP]
Venere, P. C.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Univ Fed Mato Grosso
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Targino Valente, G. [UNESP]
de Andrade Vitorino, C.
Cabral-de-Mello, Diogo Cavalcanti [UNESP]
Oliveira, C.
Lima Souza, I.
Martins, C. [UNESP]
Venere, P. C.
dc.subject.por.fl_str_mv chromosome evolution
fish chromosomes
genome
Cichlidae
topic chromosome evolution
fish chromosomes
genome
Cichlidae
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 CMA(3) 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 cupid (Heckel, 1840), Geophagus proximus, Retroculus lapidifer (Castelnau, 1855), Crenicichla strigata Gunther, 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.
publishDate 2012
dc.date.none.fl_str_mv 2012-01-01
2014-05-20T13:52:35Z
2014-05-20T13:52:35Z
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. St Petersburg: Zoological Inst, v. 6, n. 2, p. 163-181, 2012.
1993-0771
http://hdl.handle.net/11449/18768
10.3897/CompCytogen.v6i2.1739
WOS:000307194600006
WOS000307194600006.pdf
8858800699425352
0000-0003-3534-974X
url http://dx.doi.org/10.3897/CompCytogen.v6i2.1739
http://hdl.handle.net/11449/18768
identifier_str_mv Comparative Cytogenetics. St Petersburg: Zoological Inst, v. 6, n. 2, p. 163-181, 2012.
1993-0771
10.3897/CompCytogen.v6i2.1739
WOS:000307194600006
WOS000307194600006.pdf
8858800699425352
0000-0003-3534-974X
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Comparative Cytogenetics
1.319
0,431
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 163-181
application/pdf
dc.publisher.none.fl_str_mv Zoological Inst
publisher.none.fl_str_mv Zoological Inst
dc.source.none.fl_str_mv Web of Science
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)
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