Evaluation of toxicity and environmental safety in use of spinosad to rationalize control strategies against Aedes aegypti
| Autor: | Carlos Eduardo Alves da Silva, Cássio Resende de Morais, Vanessa Santana Vieira Santos, Cynthia Martins Oliveira, Boscolli Barbosa Pereira, Jean Ezequiel Limongi |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Insecticides
Environmental Engineering Health Toxicology and Mutagenesis 0208 environmental biotechnology Daphnia magna Spinosad 02 engineering and technology Aedes aegypti 010501 environmental sciences Ecotoxicology 01 natural sciences Toxicology Aedes Toxicity Tests medicine Environmental Chemistry Animals Toxicity Tests Chronic Chronic toxicity Larvicide 0105 earth and related environmental sciences biology Reproduction fungi Public Health Environmental and Occupational Health General Medicine General Chemistry Pesticide biology.organism_classification Pollution 020801 environmental engineering Drug Combinations Daphnia Larva Toxicity Female Macrolides medicine.drug |
| Zdroj: | Chemosphere. 226 |
| ISSN: | 1879-1298 |
| Popis: | Spinosad is a naturally-occurring insecticide used for the management of Ae. aegypti larvae. The assessment of ecotoxicological parameters of spinosad is required for verifying the environmentally-friendly behavior of the compound and for evaluating toxicity values on non-target species. Thus, the aim of the study was to conduct toxicity tests using Daphnia magna as model organism after exposure to different concentrations of spinosad. Immobility effects were observed in both acute and chronic toxicity tests at the concentration of 2.5 μg/L, and D. magna exhibited an EC50-48 h of 4.1 μg/L and EC50-7d of 9.3 μg/L. Also, the reproductive test showed a significant increase in the time of first reproduction and decrease in the number of neonates per female. However, due to the rapid decay of spinosad, other reproductive parameters were not markedly affected. Thereby, considering the satisfactory control performance against Aedes aegypti, a 100-fold lower concentration of spinosad can be used against the larvae, and owing to the residual efficacy observed, the application of the pesticide in the field may be rationalized while offering environmental safety. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect