Cytogenetics analyses among populations of the fish Iheringichtys labrosus (Kröyer, 1874) (Siluriformes, Pimelodidae). Karyotype analysis, C- banding and AgRONs distribution

Karyotypic data on Iheringichthys labrosus from several populations of Paraná River/Argentina are presented. The diploid number was 2n=56 and the karyotype consisted of 42m/sm + 14st/a (NF= 98). The AgNORs were observed in telomeres of the long arm of a st/a chromosome pair. These sites were also...

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Detalles Bibliográficos
Autores principales:	Sánchez, Sebastián, Swarça, Ana Claudia, Fenocchio, Alberto Sergio
Formato:	Artículo
Lenguaje:	Inglés
Publicado:	Instituto Internacional de Ecologia 2020
Materias:	Pimelodidae Labrosus Karyotype conservatism Conservantismo cariotípico
Acceso en línea:	http://repositorio.unne.edu.ar/handle/123456789/1636
Aporte de:	RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste

id	I48-R184-123456789-1636
record_format	dspace
spelling	I48-R184-123456789-16362024-10-23T10:50:53Z Cytogenetics analyses among populations of the fish Iheringichtys labrosus (Kröyer, 1874) (Siluriformes, Pimelodidae). Karyotype analysis, C- banding and AgRONs distribution Sánchez, Sebastián Swarça, Ana Claudia Fenocchio, Alberto Sergio Pimelodidae Labrosus Karyotype conservatism Conservantismo cariotípico Karyotypic data on Iheringichthys labrosus from several populations of Paraná River/Argentina are presented. The diploid number was 2n=56 and the karyotype consisted of 42m/sm + 14st/a (NF= 98). The AgNORs were observed in telomeres of the long arm of a st/a chromosome pair. These sites were also positive after C-banding. Heterochromatin was observed in the telomeric position in some chromosomal pairs and can be found in one or both metacentric chromosome arms. The obtained results were compared with those reported for different populations from Brazilian rivers and the similarity among them was evident. However, discordant chromosome formulae and karyotype features between samples should be carefully taken because, in some cases, they seem to be more technical artifacts than real differences. Dados cariotípicos de Iheringichthys labrosus de várias populações do Rio Paraná/Argentina são apresentados. O número diploide foi 2n=56 e o cariótipo constituído de 42m/sm + 14st/a (NF= 98). As AgNORs foram observadas telomericamente no braço longo de um par cromossômico st/a. Estes sítios também apresentaram bandas positivas após bandamento C. Heterocromatina foi observada em posição telomérica em alguns pares cromossômicos e podem ser encontradas em um ou ambos os braços de cromossomos metacêntricos. Os resultados obtidos foram comparados com aqueles reportados em diferentes populações de rios brasileiros e foi evidente uma similaridade entre eles. Entretanto, fórmulas cariotípicas discordantes e características cariotípicas entre exemplares deveriam ser cuidadosamente observadas porque, em alguns casos, eles parecem ser mais artefatos de técnica que diferenças reais. Fil: Sánchez, Sebastián. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias. Instituto de Ictiología del Nordeste; Argentina. Fil: Swarça, Ana Claudia Universidade Estadual de Londrina. Centro de Ciências Biológicas. Departamento de Histología; Brasil. Fil: Fenocchio, Alberto Sergio. Universidad Nacional de Misiones. Departamento de Genética; Argentina. 2020-06-02T22:33:56Z 2020-06-02T22:33:56Z 2014 Artículo Sánchez, Sebastián, Swarça, Ana Claudia y Fenocchio, Alberto Sergio, 2014. Cytogenetics analyses among populations of the fish Iheringichtys labrosus (Kröyer, 1874) (Siluriformes, Pimelodidae). Karyotype analysis, C- banding and AgRONs distribution. Brazilian Journal of Biology. São Carlos: International Institute of Ecology, vol. 74, no. 1, p. 212-216. ISSN 1519-6984. 1519-6984 http://repositorio.unne.edu.ar/handle/123456789/1636 eng https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000100026&lng=en&tlng=en openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf p. 212-216 application/pdf Instituto Internacional de Ecologia Brazilian Journal of Biology, 2014, vol. 74, no. 1, p. 212-216.
institution	Universidad Nacional del Nordeste
institution_str	I-48
repository_str	R-184
collection	RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language	Inglés
topic	Pimelodidae Labrosus Karyotype conservatism Conservantismo cariotípico
spellingShingle	Pimelodidae Labrosus Karyotype conservatism Conservantismo cariotípico Sánchez, Sebastián Swarça, Ana Claudia Fenocchio, Alberto Sergio Cytogenetics analyses among populations of the fish Iheringichtys labrosus (Kröyer, 1874) (Siluriformes, Pimelodidae). Karyotype analysis, C- banding and AgRONs distribution
topic_facet	Pimelodidae Labrosus Karyotype conservatism Conservantismo cariotípico
description	Karyotypic data on Iheringichthys labrosus from several populations of Paraná River/Argentina are presented. The diploid number was 2n=56 and the karyotype consisted of 42m/sm + 14st/a (NF= 98). The AgNORs were observed in telomeres of the long arm of a st/a chromosome pair. These sites were also positive after C-banding. Heterochromatin was observed in the telomeric position in some chromosomal pairs and can be found in one or both metacentric chromosome arms. The obtained results were compared with those reported for different populations from Brazilian rivers and the similarity among them was evident. However, discordant chromosome formulae and karyotype features between samples should be carefully taken because, in some cases, they seem to be more technical artifacts than real differences.
format	Artículo
author	Sánchez, Sebastián Swarça, Ana Claudia Fenocchio, Alberto Sergio
author_facet	Sánchez, Sebastián Swarça, Ana Claudia Fenocchio, Alberto Sergio
author_sort	Sánchez, Sebastián
title	Cytogenetics analyses among populations of the fish Iheringichtys labrosus (Kröyer, 1874) (Siluriformes, Pimelodidae). Karyotype analysis, C- banding and AgRONs distribution
title_short	Cytogenetics analyses among populations of the fish Iheringichtys labrosus (Kröyer, 1874) (Siluriformes, Pimelodidae). Karyotype analysis, C- banding and AgRONs distribution
title_full	Cytogenetics analyses among populations of the fish Iheringichtys labrosus (Kröyer, 1874) (Siluriformes, Pimelodidae). Karyotype analysis, C- banding and AgRONs distribution
title_fullStr	Cytogenetics analyses among populations of the fish Iheringichtys labrosus (Kröyer, 1874) (Siluriformes, Pimelodidae). Karyotype analysis, C- banding and AgRONs distribution
title_full_unstemmed	Cytogenetics analyses among populations of the fish Iheringichtys labrosus (Kröyer, 1874) (Siluriformes, Pimelodidae). Karyotype analysis, C- banding and AgRONs distribution
title_sort	cytogenetics analyses among populations of the fish iheringichtys labrosus (kröyer, 1874) (siluriformes, pimelodidae). karyotype analysis, c- banding and agrons distribution
publisher	Instituto Internacional de Ecologia
publishDate	2020
url	http://repositorio.unne.edu.ar/handle/123456789/1636
work_keys_str_mv	AT sanchezsebastian cytogeneticsanalysesamongpopulationsofthefishiheringichtyslabrosuskroyer1874siluriformespimelodidaekaryotypeanalysiscbandingandagronsdistribution AT swarcaanaclaudia cytogeneticsanalysesamongpopulationsofthefishiheringichtyslabrosuskroyer1874siluriformespimelodidaekaryotypeanalysiscbandingandagronsdistribution AT fenocchioalbertosergio cytogeneticsanalysesamongpopulationsofthefishiheringichtyslabrosuskroyer1874siluriformespimelodidaekaryotypeanalysiscbandingandagronsdistribution
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Cytogenetics analyses among populations of the fish Iheringichtys labrosus (Kröyer, 1874) (Siluriformes, Pimelodidae). Karyotype analysis, C- banding and AgRONs distribution

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