Male meiotic behaviour and nucleolus organizer regions in Camptischium clavipes (Fabr.) (Coreidae, Heteroptera) analyzed by fluorescent banding and in situ hybridization

— All heteropteran species possess holokinetic chromosomes and a pre-reductional type of meiosis. Autosomal bivalents segregate reductionally at meiosis I while the sex chromosomes do so equationally; the m chromosome pair is achiasmatic and also divides pre-reductionally. Previous reports support t...

Descripción completa

Detalles Bibliográficos
Autores principales: Cattani, M.Victoria, Greizerstein, Eduardo José, Papeschi, Alba Graciela
Publicado: 2004
Materias:
FISH
Fluorescent banding
Heteroptera
Holokinetic chromosomes
NOR
Coreidae
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00087114_v57_n3_p267_Cattani
http://hdl.handle.net/20.500.12110/paper_00087114_v57_n3_p267_Cattani
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00087114_v57_n3_p267_Cattani
record_format dspace
spelling paper:paper_00087114_v57_n3_p267_Cattani2023-06-08T14:33:20Z Male meiotic behaviour and nucleolus organizer regions in Camptischium clavipes (Fabr.) (Coreidae, Heteroptera) analyzed by fluorescent banding and in situ hybridization Cattani, M.Victoria Greizerstein, Eduardo José Papeschi, Alba Graciela FISH Fluorescent banding Heteroptera Holokinetic chromosomes NOR Coreidae Heteroptera — All heteropteran species possess holokinetic chromosomes and a pre-reductional type of meiosis. Autosomal bivalents segregate reductionally at meiosis I while the sex chromosomes do so equationally; the m chromosome pair is achiasmatic and also divides pre-reductionally. Previous reports support the hypothesis that during meiosis both ends of a chromosome are able to show kinetic activity, and that those chromosome ends of the autosomes that were kinetically active during the first meiotic division are inactive in the second one. Camptischium clavipes presents a male karyotype (2n = 21 = 18 + 2m + X0) and a male meiosis that are in agreement with most members of the family Coreidae. Different chromosome banding techniques reveal the presence of small C positive heterochromatin bands at telomeric positions, and a DAPI dull/ CMA bright band at the subtelomeric region of the largest autosomal pair. This band corresponds to the nucleolus organizing region as revealed by in situ hybridization. We used the NOR as a cytological marker and our observations give further support to the hypothesis on the alternate kinetic activity of telomeric regions of autosomes at meiosis I and II in Heteroptera. Besides, the location of the NOR in C. clavipes is compared with previous reports in other heteropteran species. © 2004 Taylor & Francis Group, LLC. Fil:Cattani, M.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Greizerstein, E.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Papeschi, A.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00087114_v57_n3_p267_Cattani http://hdl.handle.net/20.500.12110/paper_00087114_v57_n3_p267_Cattani
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic FISH
Fluorescent banding
Heteroptera
Holokinetic chromosomes
NOR
Coreidae
Heteroptera
spellingShingle FISH
Fluorescent banding
Heteroptera
Holokinetic chromosomes
NOR
Coreidae
Heteroptera
Cattani, M.Victoria
Greizerstein, Eduardo José
Papeschi, Alba Graciela
Male meiotic behaviour and nucleolus organizer regions in Camptischium clavipes (Fabr.) (Coreidae, Heteroptera) analyzed by fluorescent banding and in situ hybridization
topic_facet FISH
Fluorescent banding
Heteroptera
Holokinetic chromosomes
NOR
Coreidae
Heteroptera
description — All heteropteran species possess holokinetic chromosomes and a pre-reductional type of meiosis. Autosomal bivalents segregate reductionally at meiosis I while the sex chromosomes do so equationally; the m chromosome pair is achiasmatic and also divides pre-reductionally. Previous reports support the hypothesis that during meiosis both ends of a chromosome are able to show kinetic activity, and that those chromosome ends of the autosomes that were kinetically active during the first meiotic division are inactive in the second one. Camptischium clavipes presents a male karyotype (2n = 21 = 18 + 2m + X0) and a male meiosis that are in agreement with most members of the family Coreidae. Different chromosome banding techniques reveal the presence of small C positive heterochromatin bands at telomeric positions, and a DAPI dull/ CMA bright band at the subtelomeric region of the largest autosomal pair. This band corresponds to the nucleolus organizing region as revealed by in situ hybridization. We used the NOR as a cytological marker and our observations give further support to the hypothesis on the alternate kinetic activity of telomeric regions of autosomes at meiosis I and II in Heteroptera. Besides, the location of the NOR in C. clavipes is compared with previous reports in other heteropteran species. © 2004 Taylor & Francis Group, LLC.
author Cattani, M.Victoria
Greizerstein, Eduardo José
Papeschi, Alba Graciela
author_facet Cattani, M.Victoria
Greizerstein, Eduardo José
Papeschi, Alba Graciela
author_sort Cattani, M.Victoria
title Male meiotic behaviour and nucleolus organizer regions in Camptischium clavipes (Fabr.) (Coreidae, Heteroptera) analyzed by fluorescent banding and in situ hybridization
title_short Male meiotic behaviour and nucleolus organizer regions in Camptischium clavipes (Fabr.) (Coreidae, Heteroptera) analyzed by fluorescent banding and in situ hybridization
title_full Male meiotic behaviour and nucleolus organizer regions in Camptischium clavipes (Fabr.) (Coreidae, Heteroptera) analyzed by fluorescent banding and in situ hybridization
title_fullStr Male meiotic behaviour and nucleolus organizer regions in Camptischium clavipes (Fabr.) (Coreidae, Heteroptera) analyzed by fluorescent banding and in situ hybridization
title_full_unstemmed Male meiotic behaviour and nucleolus organizer regions in Camptischium clavipes (Fabr.) (Coreidae, Heteroptera) analyzed by fluorescent banding and in situ hybridization
title_sort male meiotic behaviour and nucleolus organizer regions in camptischium clavipes (fabr.) (coreidae, heteroptera) analyzed by fluorescent banding and in situ hybridization
publishDate 2004
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00087114_v57_n3_p267_Cattani
http://hdl.handle.net/20.500.12110/paper_00087114_v57_n3_p267_Cattani
work_keys_str_mv AT cattanimvictoria malemeioticbehaviourandnucleolusorganizerregionsincamptischiumclavipesfabrcoreidaeheteropteraanalyzedbyfluorescentbandingandinsituhybridization
AT greizersteineduardojose malemeioticbehaviourandnucleolusorganizerregionsincamptischiumclavipesfabrcoreidaeheteropteraanalyzedbyfluorescentbandingandinsituhybridization
AT papeschialbagraciela malemeioticbehaviourandnucleolusorganizerregionsincamptischiumclavipesfabrcoreidaeheteropteraanalyzedbyfluorescentbandingandinsituhybridization
_version_ 1768546520799379456

Ejemplares similares