Looking for genetic effects of polluted anthropized environments on Caiman crocodilus crocodilus (Reptilia, Crocodylia): A comparative genotoxic and chromosomal analysis
| Autor: | Ronis Da Silveira, Vanessa Cristina Sales Oliveira, Eliana Feldberg, Marcelo de Bello Cioffi, Luiz Antonio Carlos Bertollo, Carlos Henrique Schneider, Patrik F. Viana, Maria Claudia Gross |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Health
Toxicology and Mutagenesis Alligator 0211 other engineering and technologies Zoology Environmental pollution 02 engineering and technology Interstitial telomeric sites 010501 environmental sciences 01 natural sciences biology.animal Micronucleus test medicine Animals Humans GE1-350 Comet assay Ecosystem 0105 earth and related environmental sciences Alligators and Crocodiles 021110 strategic defence & security studies biology medicine.diagnostic_test Amazon rainforest Aquatic ecosystem Fluorescence in situ hybridization Chromosomal analysis Public Health Environmental and Occupational Health Karyotype General Medicine Pollution Environmental sciences TD172-193.5 Brazil Water Pollutants Chemical Nucleolus organizer region DNA Damage Mutagens |
| Zdroj: | Ecotoxicology and Environmental Safety, Vol 209, Iss, Pp 111835-(2021) |
| ISSN: | 0147-6513 |
| Popis: | The Amazon aquatic ecosystems have been modified by the human population growth, going through changes in their water bodies and aquatic biota. The spectacled alligator (Caiman crocodilus crocodilus) has a wide distribution and adaptability to several environments, even those polluted ones. This study aimed to investigate if a Caiman species living in urban streams of Manaus city (Amazonas State, Brazil) is affected by environmental pollution. For that, it was used classical and molecular cytogenetic procedures, in addition to micronucleus and comet assays. Although the karyotype macrostructure remains unaltered (2 n = 42 chromosomes; 24 t + 18 m/sm; NF = 60), the genotoxic analysis and the cytogenetic mapping of repetitive DNA sequences demonstrated that polluted environments alter the genome of the specimens, affecting both the chromosomal organization and the genetic material. |
| Databáze: | OpenAIRE |
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