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B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior

Abstract. In the present work, six curimatid species were analyzed: Cyphocharax voga (Hensel, 1870), Cyphocharax spilotus (Vari, 1987), Cyphocharax saladensis (Meinken, 1933), Cyphocharax modestus (Fernández-Yépez, 1948), Steindachnerina biornata (Braga & Azpelicueta, 1987) and Steindachnerina i...

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Autores principales: Sampaio, Tatiane Ramos, Gravena, Waleska, Gouveia, Juceli Gonzalez, Giuliano-Caetano, Lucia, Dias, Ana Lúcia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3833781/
https://www.ncbi.nlm.nih.gov/pubmed/24260637
http://dx.doi.org/10.3897/CompCytogen.v5i4.1650
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author Sampaio, Tatiane Ramos
Gravena, Waleska
Gouveia, Juceli Gonzalez
Giuliano-Caetano, Lucia
Dias, Ana Lúcia
author_facet Sampaio, Tatiane Ramos
Gravena, Waleska
Gouveia, Juceli Gonzalez
Giuliano-Caetano, Lucia
Dias, Ana Lúcia
author_sort Sampaio, Tatiane Ramos
collection PubMed
description Abstract. In the present work, six curimatid species were analyzed: Cyphocharax voga (Hensel, 1870), Cyphocharax spilotus (Vari, 1987), Cyphocharax saladensis (Meinken, 1933), Cyphocharax modestus (Fernández-Yépez, 1948), Steindachnerina biornata (Braga & Azpelicueta, 1987) and Steindachnerina insculpta (Fernández-Yépez, 1948) collected from two hydrographic basins. All samples presented 2n=54 meta-submetacentric (m-sm) chromosomes and FN equal to 108, and 1 or 2 B microchromosomes in the mitotic and meiotic cells of the six sampled populations showing inter-and intraindividual variation. The analysis of the meiotic cells in Cyphocharax saladensis, Cyphocharax spilotus, and Cyphocharax voga showed a modal number of 54 chromosomes in the spermatogonial metaphases and 27 bivalents in the pachytene, diplotene, diakinesis and in metaphase I stages, and 27 chromosomes in metaphase II; in Cyphocharax modestus, Steindachnerina biornata, and Steindachnerina insculpta, spermatogonial metaphases with 54 chromosomes and pachytene and metaphase I with 27 bivalents were observed. The B microchromosome was observed as univalent in the spermatogonial metaphase of Cyphocharax spilotus, in the pachytene stage in the other species, with the exception of Cyphocharax saladensis, and Steindachnerina biornata in metaphase I. New occurrences of the B microchromosome in Cyphocharax voga, Cyphocharax saladensis and Steindachnerina biornata were observed, confirming that the presence of this type of chromosome is a striking characteristic of this group of fish.
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spelling pubmed-38337812013-11-20 B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior Sampaio, Tatiane Ramos Gravena, Waleska Gouveia, Juceli Gonzalez Giuliano-Caetano, Lucia Dias, Ana Lúcia Comp Cytogenet Article Abstract. In the present work, six curimatid species were analyzed: Cyphocharax voga (Hensel, 1870), Cyphocharax spilotus (Vari, 1987), Cyphocharax saladensis (Meinken, 1933), Cyphocharax modestus (Fernández-Yépez, 1948), Steindachnerina biornata (Braga & Azpelicueta, 1987) and Steindachnerina insculpta (Fernández-Yépez, 1948) collected from two hydrographic basins. All samples presented 2n=54 meta-submetacentric (m-sm) chromosomes and FN equal to 108, and 1 or 2 B microchromosomes in the mitotic and meiotic cells of the six sampled populations showing inter-and intraindividual variation. The analysis of the meiotic cells in Cyphocharax saladensis, Cyphocharax spilotus, and Cyphocharax voga showed a modal number of 54 chromosomes in the spermatogonial metaphases and 27 bivalents in the pachytene, diplotene, diakinesis and in metaphase I stages, and 27 chromosomes in metaphase II; in Cyphocharax modestus, Steindachnerina biornata, and Steindachnerina insculpta, spermatogonial metaphases with 54 chromosomes and pachytene and metaphase I with 27 bivalents were observed. The B microchromosome was observed as univalent in the spermatogonial metaphase of Cyphocharax spilotus, in the pachytene stage in the other species, with the exception of Cyphocharax saladensis, and Steindachnerina biornata in metaphase I. New occurrences of the B microchromosome in Cyphocharax voga, Cyphocharax saladensis and Steindachnerina biornata were observed, confirming that the presence of this type of chromosome is a striking characteristic of this group of fish. Pensoft Publishers 2011-11-09 /pmc/articles/PMC3833781/ /pubmed/24260637 http://dx.doi.org/10.3897/CompCytogen.v5i4.1650 Text en Tatiane Ramos Sampaio, Waleska Gravena, Juceli Gonzalez Gouveia, Lucia Giuliano-Caetano1, Ana Lúcia Dias http://creativecommons.org/licenses/by/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Article
Sampaio, Tatiane Ramos
Gravena, Waleska
Gouveia, Juceli Gonzalez
Giuliano-Caetano, Lucia
Dias, Ana Lúcia
B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior
title B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior
title_full B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior
title_fullStr B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior
title_full_unstemmed B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior
title_short B microchromosomes in the family Curimatidae (Characiformes): mitotic and meiotic behavior
title_sort b microchromosomes in the family curimatidae (characiformes): mitotic and meiotic behavior
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3833781/
https://www.ncbi.nlm.nih.gov/pubmed/24260637
http://dx.doi.org/10.3897/CompCytogen.v5i4.1650
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