Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/15758
Title: Chromosomal mapping of transposable elements of the rex family in the bristlenose catfish, ancistrus (siluriformes, loricariidae), from the amazonian region
Authors: Favarato, Ramon Marin
Braga Ribeiro, Leila
Feldberg, Eliana
Matoso, D. A.
Keywords: Fish Protein
Repetitive Dna
Rex Protein
Rex1 Protein
Rex3 Protein
Rex6 Protein
Unclassified Drug
Retroposon
Transposon
Ancistrus Aff. Dolichopterus
Ancistrus Dolichopterus
Ancistrus Dubius
Ancistrus Maximus
Ancistrus Ranunculus
Ancistrus Sp. Catalao
Ancistrus Sp. Purus
Animals Experiment
Animals Tissue
Autosome
Chromosomal Mapping
Chromosome 1
Chromosome 10
Chromosome 12
Chromosome 13
Chromosome 16
Chromosome 17
Chromosome 18
Chromosome 19
Chromosome 2
Chromosome 20
Chromosome 21
Chromosome 24
Chromosome 25
Chromosome 26
Chromosome 3
Chromosome 4
Chromosome 5
Chromosome 6
Chromosome 7
Chromosome 8
Chromosome 9
Conservation Genetics
Cytogenetics
Euchromatin
Fish Genetics
In Situ Hybridization, Fluorescence
Gene Cluster
Genetic Variation
Heterochromatin
Evolution, Molecular
Nonhuman
Priority Journal
Protein Family
Retroposon
Siluriformes
Species Distribution
Transposon
Animals
Catfish
Classification
Female
Genetics
Karyotype
Male
Animal
Catfishes
Chromosome Mapping
Dna Transposable Elements
Female
In Situ Hybridization, Fluorescence
Karyotype
Male
Retroelements
Issue Date: 2017
metadata.dc.publisher.journal: Journal of Heredity
metadata.dc.relation.ispartof: Volume 108, Número 3, Pags. 254-261
Abstract: Repetitive DNA sequences are present in the genome of basically every known organism, and transposable elements (TE) are one of the most representative sequences involved in chromosomal rearrangements and the genomic evolution of eukaryotes. In fish, the non-LTR retrotransposon TEs, Rex1, Rex3, and Rex6, are widely distributed in fish genomes and are the best-characterized TEs in several species. In the current study, three of these retroelements were physically mapped, through fluorescent in situ hybridization (FISH), in 7 species (71 specimens) of the genus Ancistrus, known as bristlenose catfish: Ancistrus ranunculus, Ancistrus sp. 1 Purus, Ancistrus sp. 2 Catalão, Ancistrus dolichopterus, Ancistrus maximus, Ancistrus aff. dolichopterus, and Ancistrus dubius. Rex1, Rex3, and Rex6 showed a cluster distribution, mainly in the terminal and pericentromeric portions, in heterochromatic and euchromatic regions, and did not occur in sexual chromosomes; however, the number and position of the clusters varied between species. This TE distribution suggests its implication in the karyotypic evolution of these species, without affecting the rise of sexual chromosome systems in Ancistrus, in view of their chromosomal variation. © The American Genetic Association 2016. All rights reserved.
metadata.dc.identifier.doi: 10.1093/jhered/esw084
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