Chromosome differentiation patterns during cichlid fish evolution
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1186/1471-2156-11-50 http://dx.doi.org/10.1186/1471-2156-13-2 http://hdl.handle.net/11449/18723 |
Resumo: | Background: Cichlid fishes have been the subject of increasing scientific interest because of their rapid adaptive radiation which has led to an extensive ecological diversity and their enormous importance to tropical and subtropical aquaculture. To increase our understanding of chromosome evolution among cichlid species, karyotypes of one Asian, 22 African, and 30 South American cichlid species were investigated, and chromosomal data of the family was reviewed.Results: Although there is extensive variation in the karyotypes of cichlid fishes (from 2n = 32 to 2n = 60 chromosomes), the modal chromosome number for South American species was 2n = 48 and the modal number for the African ones was 2n = 44. The only Asian species analyzed, Etroplus maculatus, was observed to have 46 chromosomes. The presence of one or two macro B chromosomes was detected in two African species. The cytogenetic mapping of 18S ribosomal RNA (18S rRNA) gene revealed a variable number of clusters among species varying from two to six.Conclusions: The karyotype diversification of cichlids seems to have occurred through several chromosomal rearrangements involving fissions, fusions and inversions. It was possible to identify karyotype markers for the subfamilies Pseudocrenilabrinae (African) and Cichlinae (American). The karyotype analyses did not clarify the phylogenetic relationship among the Cichlinae tribes. on the other hand, the two major groups of Pseudocrenilabrinae (tilapiine and haplochromine) were clearly discriminated based on the characteristics of their karyotypes. The cytogenetic mapping of 18S ribosomal RNA (18S rRNA) gene did not follow the chromosome diversification in the family. The dynamic evolution of the repeated units of rRNA genes generates patterns of chromosomal distribution that do not help follows the phylogenetic relationships among taxa. The presence of B chromosomes in cichlids is of particular interest because they may not be represented in the reference genome sequences currently being obtained. |
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Repositório Institucional da UNESP |
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spelling |
Chromosome differentiation patterns during cichlid fish evolutionBackground: Cichlid fishes have been the subject of increasing scientific interest because of their rapid adaptive radiation which has led to an extensive ecological diversity and their enormous importance to tropical and subtropical aquaculture. To increase our understanding of chromosome evolution among cichlid species, karyotypes of one Asian, 22 African, and 30 South American cichlid species were investigated, and chromosomal data of the family was reviewed.Results: Although there is extensive variation in the karyotypes of cichlid fishes (from 2n = 32 to 2n = 60 chromosomes), the modal chromosome number for South American species was 2n = 48 and the modal number for the African ones was 2n = 44. The only Asian species analyzed, Etroplus maculatus, was observed to have 46 chromosomes. The presence of one or two macro B chromosomes was detected in two African species. The cytogenetic mapping of 18S ribosomal RNA (18S rRNA) gene revealed a variable number of clusters among species varying from two to six.Conclusions: The karyotype diversification of cichlids seems to have occurred through several chromosomal rearrangements involving fissions, fusions and inversions. It was possible to identify karyotype markers for the subfamilies Pseudocrenilabrinae (African) and Cichlinae (American). The karyotype analyses did not clarify the phylogenetic relationship among the Cichlinae tribes. on the other hand, the two major groups of Pseudocrenilabrinae (tilapiine and haplochromine) were clearly discriminated based on the characteristics of their karyotypes. The cytogenetic mapping of 18S ribosomal RNA (18S rRNA) gene did not follow the chromosome diversification in the family. The dynamic evolution of the repeated units of rRNA genes generates patterns of chromosomal distribution that do not help follows the phylogenetic relationships among taxa. The presence of B chromosomes in cichlids is of particular interest because they may not be represented in the reference genome sequences currently being obtained.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)UNESP Univ Estadual Paulista, Inst Biociencias, Dept Morfol, Botucatu, SP, BrazilUFMT Univ Fed Mato Grosso, Inst Univ Araguaia, Pontal do Araguaia, MT, BrazilUniv Maryland, Dept Biol, College Pk, MD 20742 USAUniv Oriente, Escuela Ciencias Aplicadas Mar, Boca de Rio, VenezuelaUNESP Univ Estadual Paulista, Inst Biociencias, Dept Morfol, Botucatu, SP, BrazilBiomed Central Ltd.Universidade Estadual Paulista (Unesp)Universidade Federal de Mato Grosso (UFMT)University of MarylandUniversidad de OrientePoletto, Andreia B. [UNESP]Ferreira, Irani A. [UNESP]Cabral-de-Mello, Diogo Cavalcanti [UNESP]Nakajima, Rafael T. [UNESP]Mazzuchelli, Juliana [UNESP]Ribeiro, Heraldo B. [UNESP]Venere, Paulo C.Nirchio, MauroKocher, Thomas D.Martins, Cesar [UNESP]2014-05-20T13:52:23Z2014-05-20T13:52:23Z2010-06-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article12application/pdfapplication/pdfhttp://dx.doi.org/10.1186/1471-2156-11-50http://dx.doi.org/10.1186/1471-2156-13-2Bmc Genetics. London: Biomed Central Ltd., v. 11, p. 12, 2010.1471-2156http://hdl.handle.net/11449/1872310.1186/1471-2156-11-50WOS:000279859800001WOS:000300552000001WOS000279859800001.pdfWOS000300552000001.pdf88588006994253520000-0003-3534-974XWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBMC Genetics2.4691,160info:eu-repo/semantics/openAccess2023-11-25T06:14:59Zoai:repositorio.unesp.br:11449/18723Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-25T06:14:59Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Chromosome differentiation patterns during cichlid fish evolution |
title |
Chromosome differentiation patterns during cichlid fish evolution |
spellingShingle |
Chromosome differentiation patterns during cichlid fish evolution Poletto, Andreia B. [UNESP] |
title_short |
Chromosome differentiation patterns during cichlid fish evolution |
title_full |
Chromosome differentiation patterns during cichlid fish evolution |
title_fullStr |
Chromosome differentiation patterns during cichlid fish evolution |
title_full_unstemmed |
Chromosome differentiation patterns during cichlid fish evolution |
title_sort |
Chromosome differentiation patterns during cichlid fish evolution |
author |
Poletto, Andreia B. [UNESP] |
author_facet |
Poletto, Andreia B. [UNESP] Ferreira, Irani A. [UNESP] Cabral-de-Mello, Diogo Cavalcanti [UNESP] Nakajima, Rafael T. [UNESP] Mazzuchelli, Juliana [UNESP] Ribeiro, Heraldo B. [UNESP] Venere, Paulo C. Nirchio, Mauro Kocher, Thomas D. Martins, Cesar [UNESP] |
author_role |
author |
author2 |
Ferreira, Irani A. [UNESP] Cabral-de-Mello, Diogo Cavalcanti [UNESP] Nakajima, Rafael T. [UNESP] Mazzuchelli, Juliana [UNESP] Ribeiro, Heraldo B. [UNESP] Venere, Paulo C. Nirchio, Mauro Kocher, Thomas D. Martins, Cesar [UNESP] |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de Mato Grosso (UFMT) University of Maryland Universidad de Oriente |
dc.contributor.author.fl_str_mv |
Poletto, Andreia B. [UNESP] Ferreira, Irani A. [UNESP] Cabral-de-Mello, Diogo Cavalcanti [UNESP] Nakajima, Rafael T. [UNESP] Mazzuchelli, Juliana [UNESP] Ribeiro, Heraldo B. [UNESP] Venere, Paulo C. Nirchio, Mauro Kocher, Thomas D. Martins, Cesar [UNESP] |
description |
Background: Cichlid fishes have been the subject of increasing scientific interest because of their rapid adaptive radiation which has led to an extensive ecological diversity and their enormous importance to tropical and subtropical aquaculture. To increase our understanding of chromosome evolution among cichlid species, karyotypes of one Asian, 22 African, and 30 South American cichlid species were investigated, and chromosomal data of the family was reviewed.Results: Although there is extensive variation in the karyotypes of cichlid fishes (from 2n = 32 to 2n = 60 chromosomes), the modal chromosome number for South American species was 2n = 48 and the modal number for the African ones was 2n = 44. The only Asian species analyzed, Etroplus maculatus, was observed to have 46 chromosomes. The presence of one or two macro B chromosomes was detected in two African species. The cytogenetic mapping of 18S ribosomal RNA (18S rRNA) gene revealed a variable number of clusters among species varying from two to six.Conclusions: The karyotype diversification of cichlids seems to have occurred through several chromosomal rearrangements involving fissions, fusions and inversions. It was possible to identify karyotype markers for the subfamilies Pseudocrenilabrinae (African) and Cichlinae (American). The karyotype analyses did not clarify the phylogenetic relationship among the Cichlinae tribes. on the other hand, the two major groups of Pseudocrenilabrinae (tilapiine and haplochromine) were clearly discriminated based on the characteristics of their karyotypes. The cytogenetic mapping of 18S ribosomal RNA (18S rRNA) gene did not follow the chromosome diversification in the family. The dynamic evolution of the repeated units of rRNA genes generates patterns of chromosomal distribution that do not help follows the phylogenetic relationships among taxa. The presence of B chromosomes in cichlids is of particular interest because they may not be represented in the reference genome sequences currently being obtained. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-06-15 2014-05-20T13:52:23Z 2014-05-20T13:52:23Z |
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/10.1186/1471-2156-11-50 http://dx.doi.org/10.1186/1471-2156-13-2 Bmc Genetics. London: Biomed Central Ltd., v. 11, p. 12, 2010. 1471-2156 http://hdl.handle.net/11449/18723 10.1186/1471-2156-11-50 WOS:000279859800001 WOS:000300552000001 WOS000279859800001.pdf WOS000300552000001.pdf 8858800699425352 0000-0003-3534-974X |
url |
http://dx.doi.org/10.1186/1471-2156-11-50 http://dx.doi.org/10.1186/1471-2156-13-2 http://hdl.handle.net/11449/18723 |
identifier_str_mv |
Bmc Genetics. London: Biomed Central Ltd., v. 11, p. 12, 2010. 1471-2156 10.1186/1471-2156-11-50 WOS:000279859800001 WOS:000300552000001 WOS000279859800001.pdf WOS000300552000001.pdf 8858800699425352 0000-0003-3534-974X |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
BMC Genetics 2.469 1,160 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
12 application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Biomed Central Ltd. |
publisher.none.fl_str_mv |
Biomed Central Ltd. |
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) |
repository.mail.fl_str_mv |
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1803046650541768704 |