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Chromosomal complements of some Atlantic Blennioidei and Gobioidei species (Perciformes)

Abstract. A remarkable degree of chromosomal conservatism (2n=48, FN=48) has been identified in several families of Perciformes. However, some families exhibit greater karyotypic diversity, although there is still scant information on the Atlantic species. In addition to a review of karyotypic data...

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Autores principales: Galvão, Tatiana Barbosa, Bertollo, Luiz Antonio Carlos, Molina, Wagner Franco
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3833785/
https://www.ncbi.nlm.nih.gov/pubmed/24260634
http://dx.doi.org/10.3897/CompCytogen5i4.1834
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author Galvão, Tatiana Barbosa
Bertollo, Luiz Antonio Carlos
Molina, Wagner Franco
author_facet Galvão, Tatiana Barbosa
Bertollo, Luiz Antonio Carlos
Molina, Wagner Franco
author_sort Galvão, Tatiana Barbosa
collection PubMed
description Abstract. A remarkable degree of chromosomal conservatism (2n=48, FN=48) has been identified in several families of Perciformes. However, some families exhibit greater karyotypic diversity, although there is still scant information on the Atlantic species. In addition to a review of karyotypic data available for representatives of the suborders Blennioidei and Gobioidei, we have performed chromosomal analyses on Atlantic species of the families Blenniidae, Ophioblennius trinitatis Miranda-Ribeiro, 1919 (2n=46; FN=64) and Scartella cristata (Linnaeus, 1758)(2n=48; FN=50), Labrisomidae, Labrisomus nuchipinnis (Quoy & Gaimard, 1824)(2n=48; FN=50) and Gobiidae, Bathygobius soporator (Valenciennes, 1837)(2n=48; FN=56). Besides variations in chromosome number and karyotype formulas, Ag-NOR sites, albeit unique, were located in different positions and/or chromosome pairs for the species analyzed. On the other hand, the heterochromatic pattern was more conservative, distributed predominantly in the centromeric/pericentromeric regions of the four species. Data already available for Gobiidae, Blenniidae and Labrisomidae show greater intra- and interspecific karyotypic diversification when compared to other groups of Perciformes, where higher uniformity is found for various chromosome characteristics. Evolutionary dynamism displayed by these two families is likely associated with population fractionation resulting from unique biological characteristics, such as lower mobility and/or specific environmental requirements.
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spelling pubmed-38337852013-11-20 Chromosomal complements of some Atlantic Blennioidei and Gobioidei species (Perciformes) Galvão, Tatiana Barbosa Bertollo, Luiz Antonio Carlos Molina, Wagner Franco Comp Cytogenet Article Abstract. A remarkable degree of chromosomal conservatism (2n=48, FN=48) has been identified in several families of Perciformes. However, some families exhibit greater karyotypic diversity, although there is still scant information on the Atlantic species. In addition to a review of karyotypic data available for representatives of the suborders Blennioidei and Gobioidei, we have performed chromosomal analyses on Atlantic species of the families Blenniidae, Ophioblennius trinitatis Miranda-Ribeiro, 1919 (2n=46; FN=64) and Scartella cristata (Linnaeus, 1758)(2n=48; FN=50), Labrisomidae, Labrisomus nuchipinnis (Quoy & Gaimard, 1824)(2n=48; FN=50) and Gobiidae, Bathygobius soporator (Valenciennes, 1837)(2n=48; FN=56). Besides variations in chromosome number and karyotype formulas, Ag-NOR sites, albeit unique, were located in different positions and/or chromosome pairs for the species analyzed. On the other hand, the heterochromatic pattern was more conservative, distributed predominantly in the centromeric/pericentromeric regions of the four species. Data already available for Gobiidae, Blenniidae and Labrisomidae show greater intra- and interspecific karyotypic diversification when compared to other groups of Perciformes, where higher uniformity is found for various chromosome characteristics. Evolutionary dynamism displayed by these two families is likely associated with population fractionation resulting from unique biological characteristics, such as lower mobility and/or specific environmental requirements. Pensoft Publishers 2011-11-09 /pmc/articles/PMC3833785/ /pubmed/24260634 http://dx.doi.org/10.3897/CompCytogen5i4.1834 Text en Tatiana Barbosa Galvão, Luiz Antonio Carlos Bertollo, Wagner Franco Molina 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
Galvão, Tatiana Barbosa
Bertollo, Luiz Antonio Carlos
Molina, Wagner Franco
Chromosomal complements of some Atlantic Blennioidei and Gobioidei species (Perciformes)
title Chromosomal complements of some Atlantic Blennioidei and Gobioidei species (Perciformes)
title_full Chromosomal complements of some Atlantic Blennioidei and Gobioidei species (Perciformes)
title_fullStr Chromosomal complements of some Atlantic Blennioidei and Gobioidei species (Perciformes)
title_full_unstemmed Chromosomal complements of some Atlantic Blennioidei and Gobioidei species (Perciformes)
title_short Chromosomal complements of some Atlantic Blennioidei and Gobioidei species (Perciformes)
title_sort chromosomal complements of some atlantic blennioidei and gobioidei species (perciformes)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3833785/
https://www.ncbi.nlm.nih.gov/pubmed/24260634
http://dx.doi.org/10.3897/CompCytogen5i4.1834
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