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https://repositorio.inpa.gov.br/handle/1/16626| Title: | Effects of environmental pollution on the rDNAomics of Amazonian fish |
| Authors: | 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 |
| Keywords: | 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 |
| Issue Date: | 2019 |
| metadata.dc.publisher.journal: | Environmental Pollution |
| metadata.dc.relation.ispartof: | 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 |
| metadata.dc.identifier.doi: | 10.1016/j.envpol.2019.05.112 |
| Appears in Collections: | Artigos |
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