Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/16626
Título: Effects of environmental pollution on the rDNAomics of Amazonian fish
Autor: Silva, Francijara Araújo da
Feldberg, Eliana
Carvalho, Natália Dayane Moura
Hernández-Rangel, Sandra Marcela
Schneider, Carlos Henrique
Carvalho-zilse, Gislene Almeida
Silva, Victor Fonseca da
Gross, Maria Claudia
Palavras-chave: Biodiversity
Dna
Fish
Fisheries
Genes
Pollution
Population Distribution
Environmental Conditions
Environmental Pollutions
Environmental Problems
Genetic Variability
Heterochromatin
Human Activities
Natural Population
Ribosomal Genes
Dna Sequences
Dna 18s
Dna 5s
Dna, Mitochondrial
Dna, Mitochondrial
Ribosome Dna
Rna 18s
Rna 5s
Environmental Change
Environmental Conditions
Fish
Gene
Genome
Human Activity
Dna, Mitochondrial
Pollution Effect
Controlled Study
Dna Extraction
Dna Sequence
Female
Fish
In Situ Hybridization, Fluorescence
Gene Dosage
Genetic Analysis
Male
Nonhuman
Nucleotide Sequence
Polymerase Chain Reaction
River Basin
Water Pollution
Adverse Event
Animals
Chemistry
Fish
Genetics
Genome
Nucleotide Repeat
River
Seafood
Water Pollution
Amazon Basin
Animal
Dna, Mitochondrial
Ribosomal Dna
Fishes
Genome
Repetitive Sequences, Nucleic Acid
Rivers
Rna, Ribosomal, 18s
Rna, Ribosomal, 5s
Seafood
Water Pollution
Data do documento: 2019
Revista: Environmental Pollution
Encontra-se em: Volume 252, Pags. 180-187
Abstract: Pollution is a growing environmental problem throughout the world, and the impact of human activities on biodiversity and the genetic variability of natural populations is increasingly preoccupying, given that adaptive processes depend on this variability, in particular that found in the repetitive DNA. In the present study, the mitochondrial DNA (COI) and the distribution of repetitive DNA sequences (18S and 5S rDNA) in the fish genome were analysed in fish populations inhabiting both polluted and unpolluted waters in the northern Amazon basin. The results indicate highly complex ribosomal sequences in the fish genome from the polluted environment because these sequences are involved primarily in the maintenance of genome integrity, mediated by a systematic increase in the number of copies of the ribosomal DNA in response to changes in environmental conditions. Ribosomal sequences are involved primarily in the maintenance of genome integrity and that the environment influenced the distribution and organization of these sequences in the genome of the different fish species in response to changes in environmental conditions. © 2019 Elsevier Ltd
DOI: 10.1016/j.envpol.2019.05.112
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