Chromosomal evolution in allopatric populations of the <i>Odontophrynus occidentalis</i> group (Amphibia, Anura) from western Argentina

Autores
Ruiz, Itamar Romano García; Cei, José Miguel Alfredo María; Beçak, Willy
Año de publicación
1982
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A karyological study of some populations of the Odontophrynus occidentalis group (2n=22) from Argentina is reported. Ammoniacal silver (Ag-AS) and alkaline Giemsa (CBG) staining have been performed on specimens from La Rioja, Mendoza, Malargue, Tamelen, Tapiluque, Valcheta, and Meseta de Somuncura. All populations showed active ribosomal cistrons (NORs) on chromosome 11. Some metaphases of three specimens from Mendoza and five from La Rioja also showed bands on 9. Centromeric and telomeric C-bands were common to all populations, and a block of heterochromatin on both sides of the centromere of 2 was remarkable in all but the La Rioja populations. The specimens from La Rioja showed a similar block of heterochromatin on the short arm of 1. Taxonomic studies of several specimens from these localities revealed differences in larval development, glandular pattern, the size of specimens, etc. As a whole, biological as well as karyological features suggest that the isolated population at La Rioja is a separate entity, at the species level, as described elsewhere.
Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).
Facultad de Ciencias Naturales y Museo
Materia
Zoología
Odontophrynus occidentalis
Chromosomal evolution
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/87422
Acceder
id SEDICI_17aa89e4f02a91a0a42b5a3990843597
oai_identifier_str oai:sedici.unlp.edu.ar:10915/87422
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Chromosomal evolution in allopatric populations of the <i>Odontophrynus occidentalis</i> group (Amphibia, Anura) from western ArgentinaRuiz, Itamar Romano GarcíaCei, José Miguel Alfredo MaríaBeçak, WillyZoologíaOdontophrynus occidentalisChromosomal evolutionA karyological study of some populations of the <i>Odontophrynus occidentalis</i> group (2n=22) from Argentina is reported. Ammoniacal silver (Ag-AS) and alkaline Giemsa (CBG) staining have been performed on specimens from La Rioja, Mendoza, Malargue, Tamelen, Tapiluque, Valcheta, and Meseta de Somuncura. All populations showed active ribosomal cistrons (NORs) on chromosome 11. Some metaphases of three specimens from Mendoza and five from La Rioja also showed bands on 9. Centromeric and telomeric C-bands were common to all populations, and a block of heterochromatin on both sides of the centromere of 2 was remarkable in all but the La Rioja populations. The specimens from La Rioja showed a similar block of heterochromatin on the short arm of 1. Taxonomic studies of several specimens from these localities revealed differences in larval development, glandular pattern, the size of specimens, etc. As a whole, biological as well as karyological features suggest that the isolated population at La Rioja is a separate entity, at the species level, as described elsewhere.Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).Facultad de Ciencias Naturales y Museo1982info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf303-311http://sedici.unlp.edu.ar/handle/10915/87422enginfo:eu-repo/semantics/altIdentifier/issn/0301-0171info:eu-repo/semantics/altIdentifier/doi/10.1159/000131776info: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:UNLP2025-09-17T10:00:08Zoai:sedici.unlp.edu.ar:10915/87422Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-17 10:00:09.121SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Chromosomal evolution in allopatric populations of the <i>Odontophrynus occidentalis</i> group (Amphibia, Anura) from western Argentina
title Chromosomal evolution in allopatric populations of the <i>Odontophrynus occidentalis</i> group (Amphibia, Anura) from western Argentina
spellingShingle Chromosomal evolution in allopatric populations of the <i>Odontophrynus occidentalis</i> group (Amphibia, Anura) from western Argentina
Ruiz, Itamar Romano García
Zoología
Odontophrynus occidentalis
Chromosomal evolution
title_short Chromosomal evolution in allopatric populations of the <i>Odontophrynus occidentalis</i> group (Amphibia, Anura) from western Argentina
title_full Chromosomal evolution in allopatric populations of the <i>Odontophrynus occidentalis</i> group (Amphibia, Anura) from western Argentina
title_fullStr Chromosomal evolution in allopatric populations of the <i>Odontophrynus occidentalis</i> group (Amphibia, Anura) from western Argentina
title_full_unstemmed Chromosomal evolution in allopatric populations of the <i>Odontophrynus occidentalis</i> group (Amphibia, Anura) from western Argentina
title_sort Chromosomal evolution in allopatric populations of the <i>Odontophrynus occidentalis</i> group (Amphibia, Anura) from western Argentina
dc.creator.none.fl_str_mv Ruiz, Itamar Romano García
Cei, José Miguel Alfredo María
Beçak, Willy
author Ruiz, Itamar Romano García
author_facet Ruiz, Itamar Romano García
Cei, José Miguel Alfredo María
Beçak, Willy
author_role author
author2 Cei, José Miguel Alfredo María
Beçak, Willy
author2_role author
author
dc.subject.none.fl_str_mv Zoología
Odontophrynus occidentalis
Chromosomal evolution
topic Zoología
Odontophrynus occidentalis
Chromosomal evolution
dc.description.none.fl_txt_mv A karyological study of some populations of the <i>Odontophrynus occidentalis</i> group (2n=22) from Argentina is reported. Ammoniacal silver (Ag-AS) and alkaline Giemsa (CBG) staining have been performed on specimens from La Rioja, Mendoza, Malargue, Tamelen, Tapiluque, Valcheta, and Meseta de Somuncura. All populations showed active ribosomal cistrons (NORs) on chromosome 11. Some metaphases of three specimens from Mendoza and five from La Rioja also showed bands on 9. Centromeric and telomeric C-bands were common to all populations, and a block of heterochromatin on both sides of the centromere of 2 was remarkable in all but the La Rioja populations. The specimens from La Rioja showed a similar block of heterochromatin on the short arm of 1. Taxonomic studies of several specimens from these localities revealed differences in larval development, glandular pattern, the size of specimens, etc. As a whole, biological as well as karyological features suggest that the isolated population at La Rioja is a separate entity, at the species level, as described elsewhere.
Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).
Facultad de Ciencias Naturales y Museo
description A karyological study of some populations of the <i>Odontophrynus occidentalis</i> group (2n=22) from Argentina is reported. Ammoniacal silver (Ag-AS) and alkaline Giemsa (CBG) staining have been performed on specimens from La Rioja, Mendoza, Malargue, Tamelen, Tapiluque, Valcheta, and Meseta de Somuncura. All populations showed active ribosomal cistrons (NORs) on chromosome 11. Some metaphases of three specimens from Mendoza and five from La Rioja also showed bands on 9. Centromeric and telomeric C-bands were common to all populations, and a block of heterochromatin on both sides of the centromere of 2 was remarkable in all but the La Rioja populations. The specimens from La Rioja showed a similar block of heterochromatin on the short arm of 1. Taxonomic studies of several specimens from these localities revealed differences in larval development, glandular pattern, the size of specimens, etc. As a whole, biological as well as karyological features suggest that the isolated population at La Rioja is a separate entity, at the species level, as described elsewhere.
publishDate 1982
dc.date.none.fl_str_mv 1982
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/10915/87422
url http://sedici.unlp.edu.ar/handle/10915/87422
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0301-0171
info:eu-repo/semantics/altIdentifier/doi/10.1159/000131776
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)
eu_rights_str_mv 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)
dc.format.none.fl_str_mv application/pdf
303-311
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1843532490913873920
score 13.004268

Publicaciones similares