Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome

Autores
Poggio, María Georgina; Gaspe, Maria Sol; Papeschi, Alba Graciela; Bressa, Maria Jose
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Triatoma infestans (2n = 20 A + XY, male) is a blood-sucking bug and the most important vector of Chagas disease. Cytogenetic analysis of one population from Argentina has revealed the presence of one naturally occurring heterozygous for an autosomal fusion. The fusion heterozygote (2n = 19 A + 1 B + XY) presented an autosomal trivalent eight bivalents, the X and Y sex univalents, and a minute neo-extra or B chromosome at meiosis I. The autosomal trivalent divided equationally at first anaphase. At meiosis II, cells had eight autosomes, X and Y sex chromosomes, and a pseudo-trivalent composed by three chromatids of different sized (a triple chromatid). At metaphase II, the orientation of the triple chromatid led to a reductional segregation, that is, the largest chromatid migrates to one pole while the other two to the other one. The meiotic behaviour of this new chromosome complement was highly regular. The presence of an extra or B chromosome did not affect the segregation of both autosomes and sex chromosomes during both meiotic divisions. All cells analysed would be balanced, since there were no macrospermatids or microspermatids. Taking into account our results we propose that the B-chromosome was originated as a product of the autosomal fusion. Many authors propose that karyotype evolution in Heteroptera has proceeded mainly by autosomal fusions and sex chromosome fragmentations. Particularly in Triatominae, it has been proposed that karyotype evolution from the ancestral number 2n = 20 A + XY has occurred through autosomal fusions and an X chromosome fragmentation. The facts that an autosomal fusion has been found in natural population of Triatoma infestans, and it shows a regular meiotic behaviour seem to support the suggested hypothesis.
Fil: Poggio, María Georgina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Gaspe, Maria Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Eco-Epidemiología; Argentina
Fil: Papeschi, Alba Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina
Fil: Bressa, Maria Jose. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Materia
Autosomal fusion
B chromosome
Heteroptera
Holokinetic chromosomes
Triatoma
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/270928
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/270928
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network_name_str CONICET Digital (CONICET)
spelling Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra ChromosomePoggio, María GeorginaGaspe, Maria SolPapeschi, Alba GracielaBressa, Maria JoseAutosomal fusionB chromosomeHeteropteraHolokinetic chromosomesTriatomahttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Triatoma infestans (2n = 20 A + XY, male) is a blood-sucking bug and the most important vector of Chagas disease. Cytogenetic analysis of one population from Argentina has revealed the presence of one naturally occurring heterozygous for an autosomal fusion. The fusion heterozygote (2n = 19 A + 1 B + XY) presented an autosomal trivalent eight bivalents, the X and Y sex univalents, and a minute neo-extra or B chromosome at meiosis I. The autosomal trivalent divided equationally at first anaphase. At meiosis II, cells had eight autosomes, X and Y sex chromosomes, and a pseudo-trivalent composed by three chromatids of different sized (a triple chromatid). At metaphase II, the orientation of the triple chromatid led to a reductional segregation, that is, the largest chromatid migrates to one pole while the other two to the other one. The meiotic behaviour of this new chromosome complement was highly regular. The presence of an extra or B chromosome did not affect the segregation of both autosomes and sex chromosomes during both meiotic divisions. All cells analysed would be balanced, since there were no macrospermatids or microspermatids. Taking into account our results we propose that the B-chromosome was originated as a product of the autosomal fusion. Many authors propose that karyotype evolution in Heteroptera has proceeded mainly by autosomal fusions and sex chromosome fragmentations. Particularly in Triatominae, it has been proposed that karyotype evolution from the ancestral number 2n = 20 A + XY has occurred through autosomal fusions and an X chromosome fragmentation. The facts that an autosomal fusion has been found in natural population of Triatoma infestans, and it shows a regular meiotic behaviour seem to support the suggested hypothesis.Fil: Poggio, María Georgina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaFil: Gaspe, Maria Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Eco-Epidemiología; ArgentinaFil: Papeschi, Alba Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; ArgentinaFil: Bressa, Maria Jose. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaKarger2012-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/270928Poggio, María Georgina; Gaspe, Maria Sol; Papeschi, Alba Graciela; Bressa, Maria Jose; Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome; Karger; Cytogenetic And Genome Research; 139; 1; 10-2012; 44-511424-8581CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1159/000342875info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:30:10Zoai:ri.conicet.gov.ar:11336/270928instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:30:10.632CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome
title Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome
spellingShingle Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome
Poggio, María Georgina
Autosomal fusion
B chromosome
Heteroptera
Holokinetic chromosomes
Triatoma
title_short Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome
title_full Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome
title_fullStr Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome
title_full_unstemmed Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome
title_sort Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome
dc.creator.none.fl_str_mv Poggio, María Georgina
Gaspe, Maria Sol
Papeschi, Alba Graciela
Bressa, Maria Jose
author Poggio, María Georgina
author_facet Poggio, María Georgina
Gaspe, Maria Sol
Papeschi, Alba Graciela
Bressa, Maria Jose
author_role author
author2 Gaspe, Maria Sol
Papeschi, Alba Graciela
Bressa, Maria Jose
author2_role author
author
author
dc.subject.none.fl_str_mv Autosomal fusion
B chromosome
Heteroptera
Holokinetic chromosomes
Triatoma
topic Autosomal fusion
B chromosome
Heteroptera
Holokinetic chromosomes
Triatoma
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Triatoma infestans (2n = 20 A + XY, male) is a blood-sucking bug and the most important vector of Chagas disease. Cytogenetic analysis of one population from Argentina has revealed the presence of one naturally occurring heterozygous for an autosomal fusion. The fusion heterozygote (2n = 19 A + 1 B + XY) presented an autosomal trivalent eight bivalents, the X and Y sex univalents, and a minute neo-extra or B chromosome at meiosis I. The autosomal trivalent divided equationally at first anaphase. At meiosis II, cells had eight autosomes, X and Y sex chromosomes, and a pseudo-trivalent composed by three chromatids of different sized (a triple chromatid). At metaphase II, the orientation of the triple chromatid led to a reductional segregation, that is, the largest chromatid migrates to one pole while the other two to the other one. The meiotic behaviour of this new chromosome complement was highly regular. The presence of an extra or B chromosome did not affect the segregation of both autosomes and sex chromosomes during both meiotic divisions. All cells analysed would be balanced, since there were no macrospermatids or microspermatids. Taking into account our results we propose that the B-chromosome was originated as a product of the autosomal fusion. Many authors propose that karyotype evolution in Heteroptera has proceeded mainly by autosomal fusions and sex chromosome fragmentations. Particularly in Triatominae, it has been proposed that karyotype evolution from the ancestral number 2n = 20 A + XY has occurred through autosomal fusions and an X chromosome fragmentation. The facts that an autosomal fusion has been found in natural population of Triatoma infestans, and it shows a regular meiotic behaviour seem to support the suggested hypothesis.
Fil: Poggio, María Georgina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Gaspe, Maria Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Eco-Epidemiología; Argentina
Fil: Papeschi, Alba Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina
Fil: Bressa, Maria Jose. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
description Triatoma infestans (2n = 20 A + XY, male) is a blood-sucking bug and the most important vector of Chagas disease. Cytogenetic analysis of one population from Argentina has revealed the presence of one naturally occurring heterozygous for an autosomal fusion. The fusion heterozygote (2n = 19 A + 1 B + XY) presented an autosomal trivalent eight bivalents, the X and Y sex univalents, and a minute neo-extra or B chromosome at meiosis I. The autosomal trivalent divided equationally at first anaphase. At meiosis II, cells had eight autosomes, X and Y sex chromosomes, and a pseudo-trivalent composed by three chromatids of different sized (a triple chromatid). At metaphase II, the orientation of the triple chromatid led to a reductional segregation, that is, the largest chromatid migrates to one pole while the other two to the other one. The meiotic behaviour of this new chromosome complement was highly regular. The presence of an extra or B chromosome did not affect the segregation of both autosomes and sex chromosomes during both meiotic divisions. All cells analysed would be balanced, since there were no macrospermatids or microspermatids. Taking into account our results we propose that the B-chromosome was originated as a product of the autosomal fusion. Many authors propose that karyotype evolution in Heteroptera has proceeded mainly by autosomal fusions and sex chromosome fragmentations. Particularly in Triatominae, it has been proposed that karyotype evolution from the ancestral number 2n = 20 A + XY has occurred through autosomal fusions and an X chromosome fragmentation. The facts that an autosomal fusion has been found in natural population of Triatoma infestans, and it shows a regular meiotic behaviour seem to support the suggested hypothesis.
publishDate 2012
dc.date.none.fl_str_mv 2012-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/270928
Poggio, María Georgina; Gaspe, Maria Sol; Papeschi, Alba Graciela; Bressa, Maria Jose; Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome; Karger; Cytogenetic And Genome Research; 139; 1; 10-2012; 44-51
1424-8581
CONICET Digital
CONICET
url http://hdl.handle.net/11336/270928
identifier_str_mv Poggio, María Georgina; Gaspe, Maria Sol; Papeschi, Alba Graciela; Bressa, Maria Jose; Cytogenetic Study in a Mutant of Triatoma infestans (Hemiptera: Reduviidae) Carrying a Spontaneous Autosomal Fusion and an Extra Chromosome; Karger; Cytogenetic And Genome Research; 139; 1; 10-2012; 44-51
1424-8581
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1159/000342875
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Karger
publisher.none.fl_str_mv Karger
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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