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- Title
TOXICIDAD DE TRES INSECTICIDAS ORGANOFOSFORADOS EN EMBRIONES DE ANUROS A DIFERENTES TEMPERATURAS.
- Authors
HENAO MUÑOZ, Liliana Marcela; TRIANA VELÁSQUEZ, Teófila María; GALINDO MARTINEZ, Carlos Alberto; BERNAL BAUTISTA, Manuel Hernando
- Abstract
In anurans, the effects of different agrochemicals and temperature have been recurrent topics in research; however, these variables are addressed independently without considering that they can exert a simultaneous pressure on the species. For this reason, this work aims to determine the toxicity (through the Medium Lethal Concentration -LC50) of the organophosphate insecticides: chlorpyrifos, diazinon and monocrotophos, under three thermal regimes (23, 28 and 33 ± 1 °C) on embryos of three species of anurans. According to the LC50 values, the chlorpyrifos insecticide was the most toxic, followed by diazinon and monocrotophos. On the other hand, an increase in the toxicity of the organophosphate insecticides studied was generally found at the highest experimental temperature (33 °C). In addition, the effect of temperature became more noticeable for the organisms exposed to chlorpyrifos, the most lethal insecticide. These results suggest a negative effect for the aquatic fauna of anurans due to the current excessive use of this type of agrochemicals and their interaction with environmental temperature.
- Subjects
MONOCROTOPHOS; INSECTICIDES; DIAZINON; AQUATIC animals; TEMPERATURE effect; ORGANOPHOSPHORUS pesticides
- Publication
Acta Biológica Colombiana, 2021, Vol 26, Issue 1, p5
- ISSN
0120-548X
- Publication type
Article
- DOI
10.15446/abc.v26n1.78618