Cytogenetic Diversity and the Evolutionary Dynamics of rDNA Genes and Telomeric Sequences in the Ancistrus Genus (Loricariidae: Ancistrini)
The Ancistrus genus differs from other Ancistrini due to its wide karyotypic diversity, varied diploid numbers, differences in sex chromosomes, and large number of species, as well as its tendency to form small populations with low vagility. This study investigated the role of 5S and 18S rDNA and te...
| Autor principal: | Favarato, Ramon Marin |
|---|---|
| Outros Autores: | Silva, M. R. da, Oliveira, Renildo Ribeiro de, Artoni, Roberto Ferreira, Feldberg, Eliana, Matoso, D. A. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Zebrafish
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17352 |
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oai:repositorio:1-17352 |
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dspace |
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oai:repositorio:1-17352 Cytogenetic Diversity and the Evolutionary Dynamics of rDNA Genes and Telomeric Sequences in the Ancistrus Genus (Loricariidae: Ancistrini) Favarato, Ramon Marin Silva, M. R. da Oliveira, Renildo Ribeiro de Artoni, Roberto Ferreira Feldberg, Eliana Matoso, D. A. Rna 18s Rna 5s Animals Catfish Female Genetics Karyotype Male Evolution, Molecular Telomere Animal Catfishes Evolution, Molecular Female Karyotype Male Rna, Ribosomal, 18s Rna, Ribosomal, 5s Telomere The Ancistrus genus differs from other Ancistrini due to its wide karyotypic diversity, varied diploid numbers, differences in sex chromosomes, and large number of species, as well as its tendency to form small populations with low vagility. This study investigated the role of 5S and 18S rDNA and telomeric repetitive sequences in the evolution of the karyotypic macrostructure of seven species of the genus Ancistrus from the Central Amazon. The results indicate a strong correlation between the location of ribosomal sites and fragile sites in the genome, particularly of 5S rDNA sequences, which are associated, in some species, with telomeric sequences at the sites of chromosomal healing. Moreover, the occurrence of two lineages was observed with regard to the synteny of ribosomal genes. The species of the genus Ancistrus showed high chromosomal lability associated with breakpoints, which was characterized by the presence of repetitive DNA sequences and this process is suggested to be an evolutionary model for the rapid fixation of structural rearrangements. © Copyright 2016, Mary Ann Liebert, Inc. 2020-06-15T21:41:38Z 2020-06-15T21:41:38Z 2016 Artigo https://repositorio.inpa.gov.br/handle/1/17352 10.1089/zeb.2015.1140 en Volume 13, Número 2, Pags. 103-111 Restrito Zebrafish |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Rna 18s Rna 5s Animals Catfish Female Genetics Karyotype Male Evolution, Molecular Telomere Animal Catfishes Evolution, Molecular Female Karyotype Male Rna, Ribosomal, 18s Rna, Ribosomal, 5s Telomere |
| spellingShingle |
Rna 18s Rna 5s Animals Catfish Female Genetics Karyotype Male Evolution, Molecular Telomere Animal Catfishes Evolution, Molecular Female Karyotype Male Rna, Ribosomal, 18s Rna, Ribosomal, 5s Telomere Favarato, Ramon Marin Cytogenetic Diversity and the Evolutionary Dynamics of rDNA Genes and Telomeric Sequences in the Ancistrus Genus (Loricariidae: Ancistrini) |
| topic_facet |
Rna 18s Rna 5s Animals Catfish Female Genetics Karyotype Male Evolution, Molecular Telomere Animal Catfishes Evolution, Molecular Female Karyotype Male Rna, Ribosomal, 18s Rna, Ribosomal, 5s Telomere |
| description |
The Ancistrus genus differs from other Ancistrini due to its wide karyotypic diversity, varied diploid numbers, differences in sex chromosomes, and large number of species, as well as its tendency to form small populations with low vagility. This study investigated the role of 5S and 18S rDNA and telomeric repetitive sequences in the evolution of the karyotypic macrostructure of seven species of the genus Ancistrus from the Central Amazon. The results indicate a strong correlation between the location of ribosomal sites and fragile sites in the genome, particularly of 5S rDNA sequences, which are associated, in some species, with telomeric sequences at the sites of chromosomal healing. Moreover, the occurrence of two lineages was observed with regard to the synteny of ribosomal genes. The species of the genus Ancistrus showed high chromosomal lability associated with breakpoints, which was characterized by the presence of repetitive DNA sequences and this process is suggested to be an evolutionary model for the rapid fixation of structural rearrangements. © Copyright 2016, Mary Ann Liebert, Inc. |
| format |
Artigo |
| author |
Favarato, Ramon Marin |
| author2 |
Silva, M. R. da Oliveira, Renildo Ribeiro de Artoni, Roberto Ferreira Feldberg, Eliana Matoso, D. A. |
| author2Str |
Silva, M. R. da Oliveira, Renildo Ribeiro de Artoni, Roberto Ferreira Feldberg, Eliana Matoso, D. A. |
| title |
Cytogenetic Diversity and the Evolutionary Dynamics of rDNA Genes and Telomeric Sequences in the Ancistrus Genus (Loricariidae: Ancistrini) |
| title_short |
Cytogenetic Diversity and the Evolutionary Dynamics of rDNA Genes and Telomeric Sequences in the Ancistrus Genus (Loricariidae: Ancistrini) |
| title_full |
Cytogenetic Diversity and the Evolutionary Dynamics of rDNA Genes and Telomeric Sequences in the Ancistrus Genus (Loricariidae: Ancistrini) |
| title_fullStr |
Cytogenetic Diversity and the Evolutionary Dynamics of rDNA Genes and Telomeric Sequences in the Ancistrus Genus (Loricariidae: Ancistrini) |
| title_full_unstemmed |
Cytogenetic Diversity and the Evolutionary Dynamics of rDNA Genes and Telomeric Sequences in the Ancistrus Genus (Loricariidae: Ancistrini) |
| title_sort |
cytogenetic diversity and the evolutionary dynamics of rdna genes and telomeric sequences in the ancistrus genus (loricariidae: ancistrini) |
| publisher |
Zebrafish |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17352 |
| _version_ |
1787144132133650432 |
| score |
11.674684 |