Meiotic studies in nine species of Erythrodiplax (Libellulidae, Odonata). Neo-XY sex chromosome system in E. media

Erythrodiplax is an American genus of dragonflies with a mainly neotropical distribution and with 19 species cited in Argentine. In this work 9 species have been chromosomically analyzed: E. atroterminata, E. connata fusca, E. corallina, E. lygaea, E. media, E. melanorubra, E. nigricans, E. ochracea...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	Mola, Liliana Maria
Publicado:	1996
Materias:	Erythrodiplax holokinetic chromosomes meiosis neo-XY system Odonata polytypisms Anisoptera (dragonflies) Argentina (fish) Corallina Erythrodiplax atroterminata Erythrodiplax connata Erythrodiplax corallina Erythrodiplax melanorubra Erythrodiplax nigricans Erythrodiplax umbrata Libellulidae
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00114545_v61_n4_p349_Mola http://hdl.handle.net/20.500.12110/paper_00114545_v61_n4_p349_Mola
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00114545_v61_n4_p349_Mola
record_format	dspace
spelling	paper:paper_00114545_v61_n4_p349_Mola2023-06-08T14:34:57Z Meiotic studies in nine species of Erythrodiplax (Libellulidae, Odonata). Neo-XY sex chromosome system in E. media Mola, Liliana Maria Erythrodiplax holokinetic chromosomes meiosis neo-XY system Odonata polytypisms Anisoptera (dragonflies) Argentina (fish) Corallina Erythrodiplax Erythrodiplax atroterminata Erythrodiplax connata Erythrodiplax corallina Erythrodiplax melanorubra Erythrodiplax nigricans Erythrodiplax umbrata Libellulidae Odonata Erythrodiplax is an American genus of dragonflies with a mainly neotropical distribution and with 19 species cited in Argentine. In this work 9 species have been chromosomically analyzed: E. atroterminata, E. connata fusca, E. corallina, E. lygaea, E. media, E. melanorubra, E. nigricans, E. ochraceae and E. umbrata. All of them, except E. media, have n = 12 + X in males, with a similar karyotype and meiotic behaviour. Bivalents decrease gradually in size, except for the small m bivalent, whose size varies among the species. The X chromosome in E. corallina, E. lygaea, E. nigricans and E. umbrata is twice as large as in the other 4 species. On the other hand, E. media has n = 10 + neo-XY, m chromosomes, and its karyotype characterizes by the presence of two large bivalents (being the largest the heteromorphic neo-XY). The genus Erythrodiplax presents a great karyotypic constancy, although polytypisms for the m chromosome size have been detected in E. atroterminata, E. connata fusca and E. umbrata, and for the sex chromosome determining system, in E. media. The chromosome rearrangements that probably originated these polytypisms, and their evolutionary importance are discussed. Fil:Mola, L.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1996 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00114545_v61_n4_p349_Mola http://hdl.handle.net/20.500.12110/paper_00114545_v61_n4_p349_Mola
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Erythrodiplax holokinetic chromosomes meiosis neo-XY system Odonata polytypisms Anisoptera (dragonflies) Argentina (fish) Corallina Erythrodiplax Erythrodiplax atroterminata Erythrodiplax connata Erythrodiplax corallina Erythrodiplax melanorubra Erythrodiplax nigricans Erythrodiplax umbrata Libellulidae Odonata
spellingShingle	Erythrodiplax holokinetic chromosomes meiosis neo-XY system Odonata polytypisms Anisoptera (dragonflies) Argentina (fish) Corallina Erythrodiplax Erythrodiplax atroterminata Erythrodiplax connata Erythrodiplax corallina Erythrodiplax melanorubra Erythrodiplax nigricans Erythrodiplax umbrata Libellulidae Odonata Mola, Liliana Maria Meiotic studies in nine species of Erythrodiplax (Libellulidae, Odonata). Neo-XY sex chromosome system in E. media
topic_facet	Erythrodiplax holokinetic chromosomes meiosis neo-XY system Odonata polytypisms Anisoptera (dragonflies) Argentina (fish) Corallina Erythrodiplax Erythrodiplax atroterminata Erythrodiplax connata Erythrodiplax corallina Erythrodiplax melanorubra Erythrodiplax nigricans Erythrodiplax umbrata Libellulidae Odonata
description	Erythrodiplax is an American genus of dragonflies with a mainly neotropical distribution and with 19 species cited in Argentine. In this work 9 species have been chromosomically analyzed: E. atroterminata, E. connata fusca, E. corallina, E. lygaea, E. media, E. melanorubra, E. nigricans, E. ochraceae and E. umbrata. All of them, except E. media, have n = 12 + X in males, with a similar karyotype and meiotic behaviour. Bivalents decrease gradually in size, except for the small m bivalent, whose size varies among the species. The X chromosome in E. corallina, E. lygaea, E. nigricans and E. umbrata is twice as large as in the other 4 species. On the other hand, E. media has n = 10 + neo-XY, m chromosomes, and its karyotype characterizes by the presence of two large bivalents (being the largest the heteromorphic neo-XY). The genus Erythrodiplax presents a great karyotypic constancy, although polytypisms for the m chromosome size have been detected in E. atroterminata, E. connata fusca and E. umbrata, and for the sex chromosome determining system, in E. media. The chromosome rearrangements that probably originated these polytypisms, and their evolutionary importance are discussed.
author	Mola, Liliana Maria
author_facet	Mola, Liliana Maria
author_sort	Mola, Liliana Maria
title	Meiotic studies in nine species of Erythrodiplax (Libellulidae, Odonata). Neo-XY sex chromosome system in E. media
title_short	Meiotic studies in nine species of Erythrodiplax (Libellulidae, Odonata). Neo-XY sex chromosome system in E. media
title_full	Meiotic studies in nine species of Erythrodiplax (Libellulidae, Odonata). Neo-XY sex chromosome system in E. media
title_fullStr	Meiotic studies in nine species of Erythrodiplax (Libellulidae, Odonata). Neo-XY sex chromosome system in E. media
title_full_unstemmed	Meiotic studies in nine species of Erythrodiplax (Libellulidae, Odonata). Neo-XY sex chromosome system in E. media
title_sort	meiotic studies in nine species of erythrodiplax (libellulidae, odonata). neo-xy sex chromosome system in e. media
publishDate	1996
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00114545_v61_n4_p349_Mola http://hdl.handle.net/20.500.12110/paper_00114545_v61_n4_p349_Mola
work_keys_str_mv	AT molalilianamaria meioticstudiesinninespeciesoferythrodiplaxlibellulidaeodonataneoxysexchromosomesysteminemedia
_version_	1768542626434252800

Meiotic studies in nine species of Erythrodiplax (Libellulidae, Odonata). Neo-XY sex chromosome system in E. media

Ejemplares similares