Meiotic studies in <i>Dysdercus</i> Guérin Meneville, 1831 (Heteroptera: Pyrrhocoridae) : II. Evidence on variations of the diffuse stage between wild and laboratory-inbred populat...

Autores
Bressa, María José; Fumagalli, Emiliano; Ituarte, Santiago; Frassa, María Victoria; Larramendy, Marcelo Luis
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Dysdercus Guerin Meneville, 1831 comprises insect species that are often serious pests of cotton both in the Old and New World, representing the only taxon from Pyrrhocoridae in the Neotropical Region. The genus is cytologically characterized by possession of holokinetic chromosomes and a prereductional type of meiosis. So far, only seven species from the Old World and five species from the Neotropical Region have been cytogenetically described. In the present report we compare the male meiosis from both natural and inbred populations of Dysdercus chaquensis Freiberg, 1948. Our results demonstrated that even though both populations share the same diploid chromosome number, the presence of a diffuse stage was found to be committed to the wild population of the species. Furthermore, the diffuse stage was found in a high frequency in all analysed wild specimens, indicating the long duration of this period among the regular meiosis of D. chaquensis. Taking into account that the diffuse stage is connected with an intense and long period of cellular growth, and with an important transcriptional activity, the absence of this stage in all the inbred specimens of D. chaquensis could be related with the lack of unfavourable physiological conditions due to the environmental uniformity along seven years of inbreeding.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Dysdercus
Dysdercus chaquensis
Meiosis
diffuse stage
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/128205
Acceder
id SEDICI_db9c2a0ac466578dd5d17f8aef425031
oai_identifier_str oai:sedici.unlp.edu.ar:10915/128205
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Meiotic studies in <i>Dysdercus</i> Guérin Meneville, 1831 (Heteroptera: Pyrrhocoridae) : II. Evidence on variations of the diffuse stage between wild and laboratory-inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948Bressa, María JoséFumagalli, EmilianoItuarte, SantiagoFrassa, María VictoriaLarramendy, Marcelo LuisCiencias NaturalesDysdercusDysdercus chaquensisMeiosisdiffuse stage<i>Dysdercus</i> Guerin Meneville, 1831 comprises insect species that are often serious pests of cotton both in the Old and New World, representing the only taxon from Pyrrhocoridae in the Neotropical Region. The genus is cytologically characterized by possession of holokinetic chromosomes and a prereductional type of meiosis. So far, only seven species from the Old World and five species from the Neotropical Region have been cytogenetically described. In the present report we compare the male meiosis from both natural and inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948. Our results demonstrated that even though both populations share the same diploid chromosome number, the presence of a diffuse stage was found to be committed to the wild population of the species. Furthermore, the diffuse stage was found in a high frequency in all analysed wild specimens, indicating the long duration of this period among the regular meiosis of <i>D. chaquensis</i>. Taking into account that the diffuse stage is connected with an intense and long period of cellular growth, and with an important transcriptional activity, the absence of this stage in all the inbred specimens of <i>D. chaquensis</i> could be related with the lack of unfavourable physiological conditions due to the environmental uniformity along seven years of inbreeding.Facultad de Ciencias Naturales y Museo2002info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf125-131http://sedici.unlp.edu.ar/handle/10915/128205enginfo:eu-repo/semantics/altIdentifier/issn/0018-0661info:eu-repo/semantics/altIdentifier/issn/1601-5223info:eu-repo/semantics/altIdentifier/pmid/12627838info:eu-repo/semantics/altIdentifier/doi/10.1034/j.1601-5223.2002.01650.xinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:11:52Zoai:sedici.unlp.edu.ar:10915/128205Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:11:52.804SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Meiotic studies in <i>Dysdercus</i> Guérin Meneville, 1831 (Heteroptera: Pyrrhocoridae) : II. Evidence on variations of the diffuse stage between wild and laboratory-inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948
title Meiotic studies in <i>Dysdercus</i> Guérin Meneville, 1831 (Heteroptera: Pyrrhocoridae) : II. Evidence on variations of the diffuse stage between wild and laboratory-inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948
spellingShingle Meiotic studies in <i>Dysdercus</i> Guérin Meneville, 1831 (Heteroptera: Pyrrhocoridae) : II. Evidence on variations of the diffuse stage between wild and laboratory-inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948
Bressa, María José
Ciencias Naturales
Dysdercus
Dysdercus chaquensis
Meiosis
diffuse stage
title_short Meiotic studies in <i>Dysdercus</i> Guérin Meneville, 1831 (Heteroptera: Pyrrhocoridae) : II. Evidence on variations of the diffuse stage between wild and laboratory-inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948
title_full Meiotic studies in <i>Dysdercus</i> Guérin Meneville, 1831 (Heteroptera: Pyrrhocoridae) : II. Evidence on variations of the diffuse stage between wild and laboratory-inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948
title_fullStr Meiotic studies in <i>Dysdercus</i> Guérin Meneville, 1831 (Heteroptera: Pyrrhocoridae) : II. Evidence on variations of the diffuse stage between wild and laboratory-inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948
title_full_unstemmed Meiotic studies in <i>Dysdercus</i> Guérin Meneville, 1831 (Heteroptera: Pyrrhocoridae) : II. Evidence on variations of the diffuse stage between wild and laboratory-inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948
title_sort Meiotic studies in <i>Dysdercus</i> Guérin Meneville, 1831 (Heteroptera: Pyrrhocoridae) : II. Evidence on variations of the diffuse stage between wild and laboratory-inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948
dc.creator.none.fl_str_mv Bressa, María José
Fumagalli, Emiliano
Ituarte, Santiago
Frassa, María Victoria
Larramendy, Marcelo Luis
author Bressa, María José
author_facet Bressa, María José
Fumagalli, Emiliano
Ituarte, Santiago
Frassa, María Victoria
Larramendy, Marcelo Luis
author_role author
author2 Fumagalli, Emiliano
Ituarte, Santiago
Frassa, María Victoria
Larramendy, Marcelo Luis
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Dysdercus
Dysdercus chaquensis
Meiosis
diffuse stage
topic Ciencias Naturales
Dysdercus
Dysdercus chaquensis
Meiosis
diffuse stage
dc.description.none.fl_txt_mv <i>Dysdercus</i> Guerin Meneville, 1831 comprises insect species that are often serious pests of cotton both in the Old and New World, representing the only taxon from Pyrrhocoridae in the Neotropical Region. The genus is cytologically characterized by possession of holokinetic chromosomes and a prereductional type of meiosis. So far, only seven species from the Old World and five species from the Neotropical Region have been cytogenetically described. In the present report we compare the male meiosis from both natural and inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948. Our results demonstrated that even though both populations share the same diploid chromosome number, the presence of a diffuse stage was found to be committed to the wild population of the species. Furthermore, the diffuse stage was found in a high frequency in all analysed wild specimens, indicating the long duration of this period among the regular meiosis of <i>D. chaquensis</i>. Taking into account that the diffuse stage is connected with an intense and long period of cellular growth, and with an important transcriptional activity, the absence of this stage in all the inbred specimens of <i>D. chaquensis</i> could be related with the lack of unfavourable physiological conditions due to the environmental uniformity along seven years of inbreeding.
Facultad de Ciencias Naturales y Museo
description <i>Dysdercus</i> Guerin Meneville, 1831 comprises insect species that are often serious pests of cotton both in the Old and New World, representing the only taxon from Pyrrhocoridae in the Neotropical Region. The genus is cytologically characterized by possession of holokinetic chromosomes and a prereductional type of meiosis. So far, only seven species from the Old World and five species from the Neotropical Region have been cytogenetically described. In the present report we compare the male meiosis from both natural and inbred populations of <i>Dysdercus chaquensis</i> Freiberg, 1948. Our results demonstrated that even though both populations share the same diploid chromosome number, the presence of a diffuse stage was found to be committed to the wild population of the species. Furthermore, the diffuse stage was found in a high frequency in all analysed wild specimens, indicating the long duration of this period among the regular meiosis of <i>D. chaquensis</i>. Taking into account that the diffuse stage is connected with an intense and long period of cellular growth, and with an important transcriptional activity, the absence of this stage in all the inbred specimens of <i>D. chaquensis</i> could be related with the lack of unfavourable physiological conditions due to the environmental uniformity along seven years of inbreeding.
publishDate 2002
dc.date.none.fl_str_mv 2002
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/128205
url http://sedici.unlp.edu.ar/handle/10915/128205
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0018-0661
info:eu-repo/semantics/altIdentifier/issn/1601-5223
info:eu-repo/semantics/altIdentifier/pmid/12627838
info:eu-repo/semantics/altIdentifier/doi/10.1034/j.1601-5223.2002.01650.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
125-131
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1846783473546690560
score 12.982451

Publicaciones similares