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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/128205
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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:UNLP2025-09-29T11:30:58Zoai: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:13292025-09-29 11:30:58.914SEDICI (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 |
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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) |
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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) |
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application/pdf 125-131 |
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