Population cytology of Leptysma argentina Bruner (Leptysminae, Acrididae)

The grasshopper Leptysma argentina possesses a highly polymorphic karyotype which suggests that the species is undergoing a period of intensive chromosomal restructuration and evolution. The two populations studied in this work showed: (1) Polymorphism for a centric fusion between two telocentric au...

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Autores principales: Bidau, Claudio Juan, Hasson, Esteban Ruben
Publicado: 1984
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v62_n3_p161_Bidau
http://hdl.handle.net/20.500.12110/paper_00166707_v62_n3_p161_Bidau
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00166707_v62_n3_p161_Bidau
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spelling paper:paper_00166707_v62_n3_p161_Bidau2023-06-08T14:38:34Z Population cytology of Leptysma argentina Bruner (Leptysminae, Acrididae) Bidau, Claudio Juan Hasson, Esteban Ruben The grasshopper Leptysma argentina possesses a highly polymorphic karyotype which suggests that the species is undergoing a period of intensive chromosomal restructuration and evolution. The two populations studied in this work showed: (1) Polymorphism for a centric fusion between two telocentric autosomes; (2) Polymorphism for an interstitial supernumerary segment in the smallest autosome; (3) Presence of a proximal supernumerary segment in the second smallest autosome; (4) Polymorphism for a B-chromosome; (5) Heterozygosity for a complex spontaneous translocation between autosomes; (6) At least two centric shifts in two pairs of autosomes. Another interesting feature of the cytogenetics of these populations was the occurrence, in a relatively high frequency, of dicentric bridges and acentric fragments in Anaphase I probably due to errors in crossing-over. © 1984 Dr W. Junk Publishers. Fil:Bidau, C.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hasson, E.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1984 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v62_n3_p161_Bidau http://hdl.handle.net/20.500.12110/paper_00166707_v62_n3_p161_Bidau
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The grasshopper Leptysma argentina possesses a highly polymorphic karyotype which suggests that the species is undergoing a period of intensive chromosomal restructuration and evolution. The two populations studied in this work showed: (1) Polymorphism for a centric fusion between two telocentric autosomes; (2) Polymorphism for an interstitial supernumerary segment in the smallest autosome; (3) Presence of a proximal supernumerary segment in the second smallest autosome; (4) Polymorphism for a B-chromosome; (5) Heterozygosity for a complex spontaneous translocation between autosomes; (6) At least two centric shifts in two pairs of autosomes. Another interesting feature of the cytogenetics of these populations was the occurrence, in a relatively high frequency, of dicentric bridges and acentric fragments in Anaphase I probably due to errors in crossing-over. © 1984 Dr W. Junk Publishers.
author Bidau, Claudio Juan
Hasson, Esteban Ruben
spellingShingle Bidau, Claudio Juan
Hasson, Esteban Ruben
Population cytology of Leptysma argentina Bruner (Leptysminae, Acrididae)
author_facet Bidau, Claudio Juan
Hasson, Esteban Ruben
author_sort Bidau, Claudio Juan
title Population cytology of Leptysma argentina Bruner (Leptysminae, Acrididae)
title_short Population cytology of Leptysma argentina Bruner (Leptysminae, Acrididae)
title_full Population cytology of Leptysma argentina Bruner (Leptysminae, Acrididae)
title_fullStr Population cytology of Leptysma argentina Bruner (Leptysminae, Acrididae)
title_full_unstemmed Population cytology of Leptysma argentina Bruner (Leptysminae, Acrididae)
title_sort population cytology of leptysma argentina bruner (leptysminae, acrididae)
publishDate 1984
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v62_n3_p161_Bidau
http://hdl.handle.net/20.500.12110/paper_00166707_v62_n3_p161_Bidau
work_keys_str_mv AT bidauclaudiojuan populationcytologyofleptysmaargentinabrunerleptysminaeacrididae
AT hassonestebanruben populationcytologyofleptysmaargentinabrunerleptysminaeacrididae
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