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Heavy metals affecting Neotropical freshwater fish: A review of the last 10 years of research
- Source :
- Aquatic Toxicology. 237:105906
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- The expansion of urban centers, the increase in the use of chemicals in agriculture, and the significant expansion of industry has dumped increasing amounts of heavy metals into aquatic ecosystems, directly and indirectly affecting the entire food web in freshwater environments. In freshwater fish, many studies conducted worldwide have shown that these pollutants can cause alterations from the molecular level to behavioral, in all stages of life, including in future generations. Despite the great diversity of freshwater fish in the Neotropical region, few studies addressing the influence of metals on native species have been carried out. The last decade of studies showed that the effects of metals in neotropical species can be from the molecular to the behavioral level. Metals like Arsenic, Cadmium, Copper, Lead, Mercury, Chromium and Zinc have often been detected in environmental studies and evaluated in experimental approaches. Metabolically active organs showed higher levels of accumulation. In addition, some environmental studies have shown that ecologic and trophic conditions can be determinant in the level of exposure to metals. Oxidative stress, genotoxicity and several histopathological alterations were the most recurrent effects detected in target organs.
- Subjects :
- Pollutant
Cadmium
biology
Ecology
Health, Toxicology and Mutagenesis
Aquatic ecosystem
chemistry.chemical_element
Fresh Water
Introduced species
Aquatic Science
biology.organism_classification
Food web
chemistry
Metals, Heavy
Neotropical fish
Freshwater fish
Animals
Ecosystem
Water Pollutants, Chemical
Environmental Monitoring
Trophic level
Subjects
Details
- ISSN :
- 0166445X
- Volume :
- 237
- Database :
- OpenAIRE
- Journal :
- Aquatic Toxicology
- Accession number :
- edsair.doi.dedup.....fe63d3a7008a9f90d053c4929a49f184