Intriguing evidence of translocations in Discus fish (Symphysodon, Cichlidae) and a report of the largest meiotic chromosomal chain observed in vertebrates

Detalhes bibliográficos
Autor(a) principal: Gross, Maria Claudia
Data de Publicação: 2009
Outros Autores: Feldberg, Eliana, Cella, Doralice Maria, Schneider, Marielle Cristina, Schneider, Carlos Henrique, Porto, Jorge Ivan Rebelo, Martins, Cesar Henrique Rossinoli
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional do INPA
Texto Completo: https://repositorio.inpa.gov.br/handle/1/16309
Resumo: As part of a program to understand the genetics of Amazonian ornamental fish, classical cytogenetics was used to analyze Symphysodon aequifasciatus, S. discus and S. haraldi, popular and expensive aquarium fishes that are endemic to the Amazon basin. Mitotic analyses in Symphysodon have shown some odd patterns compared with other Neotropical cichlids. We have confirmed that Symphysodon species are characterized by chromosomal diversity and meiotic complexity despite the fact that species share the same diploid number 2n=60. An intriguing meiotic chromosomal chain, with up to 20 elements during diplotene/diakinesis, was observed in S. aequifasciatus and S. haraldi, whereas S. discus only contains typical bivalent chromosomes. Such chromosomal chains with a high number of elements have not been observed in any other vertebrates. We showed that the meiotic chromosomal chain was not sex related. This observation is unusual and we propose that the origin of meiotic multiples in males and females is based on a series of translocations that involved heterochromatic regions after hybridization of ancestor wild Discus species. © 2009 Macmillan Publishers Limited. All rights reserved.
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spelling Gross, Maria ClaudiaFeldberg, ElianaCella, Doralice MariaSchneider, Marielle CristinaSchneider, Carlos HenriquePorto, Jorge Ivan RebeloMartins, Cesar Henrique Rossinoli2020-06-03T19:27:19Z2020-06-03T19:27:19Z2009https://repositorio.inpa.gov.br/handle/1/1630910.1038/hdy.2009.3As part of a program to understand the genetics of Amazonian ornamental fish, classical cytogenetics was used to analyze Symphysodon aequifasciatus, S. discus and S. haraldi, popular and expensive aquarium fishes that are endemic to the Amazon basin. Mitotic analyses in Symphysodon have shown some odd patterns compared with other Neotropical cichlids. We have confirmed that Symphysodon species are characterized by chromosomal diversity and meiotic complexity despite the fact that species share the same diploid number 2n=60. An intriguing meiotic chromosomal chain, with up to 20 elements during diplotene/diakinesis, was observed in S. aequifasciatus and S. haraldi, whereas S. discus only contains typical bivalent chromosomes. Such chromosomal chains with a high number of elements have not been observed in any other vertebrates. We showed that the meiotic chromosomal chain was not sex related. This observation is unusual and we propose that the origin of meiotic multiples in males and females is based on a series of translocations that involved heterochromatic regions after hybridization of ancestor wild Discus species. © 2009 Macmillan Publishers Limited. All rights reserved.Volume 102, Número 5, Pags. 435-441Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessChromosomeCichlidComplexityCytogeneticsEndemic SpeciesKaryologyOrnamental SpeciesTranslocationAnimalsBiological ModelChromosomeCichlidFemaleGene TranslocationGeneticsMaleMeiosisEvolution, MolecularVertebrateAnimalChromosomesCichlidsEvolution, MolecularFemaleMaleMeiosisModels, GeneticTranslocation, GeneticVertebratesAmazon BasinSouth AmericaCichlidaePiscesSymphysodonSymphysodon AequifasciataSymphysodon DiscusVertebrataIntriguing evidence of translocations in Discus fish (Symphysodon, Cichlidae) and a report of the largest meiotic chromosomal chain observed in vertebratesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleHeredityengreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALartigo-inpa.pdfartigo-inpa.pdfapplication/pdf790472https://repositorio.inpa.gov.br/bitstream/1/16309/1/artigo-inpa.pdff21941c2c62c2cbe7acebe3ac65d2cc6MD511/163092020-06-03 16:01:48.957oai:repositorio:1/16309Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-06-03T20:01:48Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false
dc.title.en.fl_str_mv Intriguing evidence of translocations in Discus fish (Symphysodon, Cichlidae) and a report of the largest meiotic chromosomal chain observed in vertebrates
title Intriguing evidence of translocations in Discus fish (Symphysodon, Cichlidae) and a report of the largest meiotic chromosomal chain observed in vertebrates
spellingShingle Intriguing evidence of translocations in Discus fish (Symphysodon, Cichlidae) and a report of the largest meiotic chromosomal chain observed in vertebrates
Gross, Maria Claudia
Chromosome
Cichlid
Complexity
Cytogenetics
Endemic Species
Karyology
Ornamental Species
Translocation
Animals
Biological Model
Chromosome
Cichlid
Female
Gene Translocation
Genetics
Male
Meiosis
Evolution, Molecular
Vertebrate
Animal
Chromosomes
Cichlids
Evolution, Molecular
Female
Male
Meiosis
Models, Genetic
Translocation, Genetic
Vertebrates
Amazon Basin
South America
Cichlidae
Pisces
Symphysodon
Symphysodon Aequifasciata
Symphysodon Discus
Vertebrata
title_short Intriguing evidence of translocations in Discus fish (Symphysodon, Cichlidae) and a report of the largest meiotic chromosomal chain observed in vertebrates
title_full Intriguing evidence of translocations in Discus fish (Symphysodon, Cichlidae) and a report of the largest meiotic chromosomal chain observed in vertebrates
title_fullStr Intriguing evidence of translocations in Discus fish (Symphysodon, Cichlidae) and a report of the largest meiotic chromosomal chain observed in vertebrates
title_full_unstemmed Intriguing evidence of translocations in Discus fish (Symphysodon, Cichlidae) and a report of the largest meiotic chromosomal chain observed in vertebrates
title_sort Intriguing evidence of translocations in Discus fish (Symphysodon, Cichlidae) and a report of the largest meiotic chromosomal chain observed in vertebrates
author Gross, Maria Claudia
author_facet Gross, Maria Claudia
Feldberg, Eliana
Cella, Doralice Maria
Schneider, Marielle Cristina
Schneider, Carlos Henrique
Porto, Jorge Ivan Rebelo
Martins, Cesar Henrique Rossinoli
author_role author
author2 Feldberg, Eliana
Cella, Doralice Maria
Schneider, Marielle Cristina
Schneider, Carlos Henrique
Porto, Jorge Ivan Rebelo
Martins, Cesar Henrique Rossinoli
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Gross, Maria Claudia
Feldberg, Eliana
Cella, Doralice Maria
Schneider, Marielle Cristina
Schneider, Carlos Henrique
Porto, Jorge Ivan Rebelo
Martins, Cesar Henrique Rossinoli
dc.subject.eng.fl_str_mv Chromosome
Cichlid
Complexity
Cytogenetics
Endemic Species
Karyology
Ornamental Species
Translocation
Animals
Biological Model
Chromosome
Cichlid
Female
Gene Translocation
Genetics
Male
Meiosis
Evolution, Molecular
Vertebrate
Animal
Chromosomes
Cichlids
Evolution, Molecular
Female
Male
Meiosis
Models, Genetic
Translocation, Genetic
Vertebrates
Amazon Basin
South America
Cichlidae
Pisces
Symphysodon
Symphysodon Aequifasciata
Symphysodon Discus
Vertebrata
topic Chromosome
Cichlid
Complexity
Cytogenetics
Endemic Species
Karyology
Ornamental Species
Translocation
Animals
Biological Model
Chromosome
Cichlid
Female
Gene Translocation
Genetics
Male
Meiosis
Evolution, Molecular
Vertebrate
Animal
Chromosomes
Cichlids
Evolution, Molecular
Female
Male
Meiosis
Models, Genetic
Translocation, Genetic
Vertebrates
Amazon Basin
South America
Cichlidae
Pisces
Symphysodon
Symphysodon Aequifasciata
Symphysodon Discus
Vertebrata
description As part of a program to understand the genetics of Amazonian ornamental fish, classical cytogenetics was used to analyze Symphysodon aequifasciatus, S. discus and S. haraldi, popular and expensive aquarium fishes that are endemic to the Amazon basin. Mitotic analyses in Symphysodon have shown some odd patterns compared with other Neotropical cichlids. We have confirmed that Symphysodon species are characterized by chromosomal diversity and meiotic complexity despite the fact that species share the same diploid number 2n=60. An intriguing meiotic chromosomal chain, with up to 20 elements during diplotene/diakinesis, was observed in S. aequifasciatus and S. haraldi, whereas S. discus only contains typical bivalent chromosomes. Such chromosomal chains with a high number of elements have not been observed in any other vertebrates. We showed that the meiotic chromosomal chain was not sex related. This observation is unusual and we propose that the origin of meiotic multiples in males and females is based on a series of translocations that involved heterochromatic regions after hybridization of ancestor wild Discus species. © 2009 Macmillan Publishers Limited. All rights reserved.
publishDate 2009
dc.date.issued.fl_str_mv 2009
dc.date.accessioned.fl_str_mv 2020-06-03T19:27:19Z
dc.date.available.fl_str_mv 2020-06-03T19:27:19Z
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 https://repositorio.inpa.gov.br/handle/1/16309
dc.identifier.doi.none.fl_str_mv 10.1038/hdy.2009.3
url https://repositorio.inpa.gov.br/handle/1/16309
identifier_str_mv 10.1038/hdy.2009.3
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Volume 102, Número 5, Pags. 435-441
dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Heredity
publisher.none.fl_str_mv Heredity
dc.source.none.fl_str_mv reponame:Repositório Institucional do INPA
instname:Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron:INPA
instname_str Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron_str INPA
institution INPA
reponame_str Repositório Institucional do INPA
collection Repositório Institucional do INPA
bitstream.url.fl_str_mv https://repositorio.inpa.gov.br/bitstream/1/16309/1/artigo-inpa.pdf
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