There are many agrochemicals used in agriculture among them Kraft 36EC® which has abamectin as its active ingredient and Score 250EC®, active ingredient diphenoconazole. They are compounds widely used in strawberry crops in regions of tropical climate, and despite that they are classified as extremely toxic and very dangerous to the environment. The use of the fish as test organisms stands out in ecotoxicology due to their representative importance and critical role in aquatic food webs. Due to ethical issues and in order to reduce costs, space and waste generated, alternative methods using fish embryos are currently widely used. FET - Fish Embryo Toxicity Test already has many followers, but the sensitivity of this test, compared to adult organisms, is often questioned. Studies show that the sensitivity of the different stages of life of the Danio rerio depends on the characteristics of the compounds and their interactions. Little is known about the causes of sensitivity differences between the life stages of an organism, and to better understand the toxicokinetics of the different compounds, it is recommended that the toxicity of the chemicals be tested on embryos, juveniles and / or adults. Considering the ecological risks inherent to the use of the insecticide abamectin and the fungicide difenoconazole, the main objective of this research is to evaluate the effect generated in Danio rerio embryos exposed to isolated pesticides and in mixtures, and to compare these results by means of statistical correlations with the sensitivity of tests previously performed using adults of Danio rerio.
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