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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/270928
Ver los metadatos del registro completo
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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 Técnicas2025-09-29T10:00:39Zoai: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:34982025-09-29 10:00:39.878CONICET 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 https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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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1844613790950227968 |
score |
13.070432 |