Meiotic studies in Lygaeus alboornatus Blanchard 1852 (Heteroptera, Lygaeidae, Lygaeinae)

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The subfamily Lygaeinae comprises 58 genera with about 500 species distributed world-wide. Despite the great biodiversity of the taxon, cytogenetic data of the group is scarce. To date, only 26 species belonging to 12 genera have been cytogenetically described. As it is the rule for the order Hetero...

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Autores principales: Bressa, María José, Papeschi, Alba G., Larramendy, Marcelo Luis
Formato: Articulo
Lenguaje:Inglés
Publicado: 2002
Materias:
Ciencias Naturales
Heteroptera
Holokinetic chromosomes
Lygaeinae
Lygaeus alboornatus
Meiosis
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83378
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83378
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Heteroptera
Holokinetic chromosomes
Lygaeinae
Lygaeus alboornatus
Meiosis
spellingShingle Ciencias Naturales
Heteroptera
Holokinetic chromosomes
Lygaeinae
Lygaeus alboornatus
Meiosis
Bressa, María José
Papeschi, Alba G.
Larramendy, Marcelo Luis
Meiotic studies in Lygaeus alboornatus Blanchard 1852 (Heteroptera, Lygaeidae, Lygaeinae)
topic_facet Ciencias Naturales
Heteroptera
Holokinetic chromosomes
Lygaeinae
Lygaeus alboornatus
Meiosis
description The subfamily Lygaeinae comprises 58 genera with about 500 species distributed world-wide. Despite the great biodiversity of the taxon, cytogenetic data of the group is scarce. To date, only 26 species belonging to 12 genera have been cytogenetically described. As it is the rule for the order Heteroptera, all the species possess holokinetic chromosomes, and a pre-reductional type of meiosis, namely at anaphase I the autosomal bivalents divide reductionally while the sex chromosomes are achiasmatic and divide equationally. Available data reveal that all the Lygaeinae are characterised by a modal diploid number of 14 and an XY/XX sex chromosome determining system. In the present study the male meiotic development of Lygaeus alboornatus from Argentina is analysed. The results demonstrate that the species, though sharing the basic chromosomal features from Lygaeinae, has a diploid number of 12 (10+XY), being this chromosome number the lowest reported so far for the subfamily.
format Articulo
Articulo
author Bressa, María José
Papeschi, Alba G.
Larramendy, Marcelo Luis
author_facet Bressa, María José
Papeschi, Alba G.
Larramendy, Marcelo Luis
author_sort Bressa, María José
title Meiotic studies in Lygaeus alboornatus Blanchard 1852 (Heteroptera, Lygaeidae, Lygaeinae)
title_short Meiotic studies in Lygaeus alboornatus Blanchard 1852 (Heteroptera, Lygaeidae, Lygaeinae)
title_full Meiotic studies in Lygaeus alboornatus Blanchard 1852 (Heteroptera, Lygaeidae, Lygaeinae)
title_fullStr Meiotic studies in Lygaeus alboornatus Blanchard 1852 (Heteroptera, Lygaeidae, Lygaeinae)
title_full_unstemmed Meiotic studies in Lygaeus alboornatus Blanchard 1852 (Heteroptera, Lygaeidae, Lygaeinae)
title_sort meiotic studies in lygaeus alboornatus blanchard 1852 (heteroptera, lygaeidae, lygaeinae)
publishDate 2002
url http://sedici.unlp.edu.ar/handle/10915/83378
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AT larramendymarceloluis meioticstudiesinlygaeusalboornatusblanchard1852heteropteralygaeidaelygaeinae
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