Exposure to Landfill Leachates Affects the Embryonic Development of Zebrafish, Danio rerio: A Case Study in Yucatan, Mexico
| Autor: | Mariana E. Romellón-Orozco, Roger Méndez-Novelo, Carlos Puch-Hau, Mercedes Quintanilla-Mena, Ana M. Escalante-Mañe, Germán Giácoman-Vallejos, Avel González-Sánchez, Emanuel Hernández-Núñez |
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| Rok vydání: | 2021 |
| Předmět: |
Pollutant
biology Chemistry Hatching Health Toxicology and Mutagenesis Embryogenesis Danio 04 agricultural and veterinary sciences General Medicine 010501 environmental sciences Toxicology biology.organism_classification 01 natural sciences Pollution Environmental chemistry Toxicity 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Ecotoxicology Leachate Zebrafish 0105 earth and related environmental sciences |
| Zdroj: | Bulletin of Environmental Contamination and Toxicology. 108:526-531 |
| ISSN: | 1432-0800 0007-4861 |
| Popis: | We report the chemical characterisation and toxic effects of municipal solid waste landfill leachates on the embryonic development of Danio rerio. The results of the Fourier transform infrared spectroscopy (FTIR) revealed the presence of nitrogen-containing groups and aromatic functional groups associated with highly toxic pollutants such as ammonia and heavy metal–humic complexes. Mortalities of up to 93 and 100% were observed in 1:64 and 1:32 landfill leachate dilutions, v/v, respectively. The hatching percentages of the fish were also severely affected, with very low percentages ranging from 0 to 33.3% for 1:32, 1:64 and 1:128 dilutions, v/v. Morphologically, a developmental arrest was evident for all treatments. This study reveals the high toxicity of landfill leachates that could contaminate the aquifer of the Yucatan Peninsula and threaten the health of living organisms. |
| Databáze: | OpenAIRE |
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