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Bioaccumulation is defined as the process of accumulation and enrichment of contaminants in organisms over time and encompasses two important concepts: bioconcentration and biomagnification. Bioconcentration is the accumulation of contaminant in the body through its direct absorption of the environment and biomagnification is the accumulation of the contaminant through the body's diet, leading to increased concentration of the contaminant in the highest trophic levels of the food chain. First, for bioaccumulation to occur, it is necessary to show the body to the contaminant. this exposure is dependent on the bioavailability of the contaminant, which can be understood as its part in the environment that is potentially available to be bioconcentrated and biomagnified. among the various types of bioavailable contaminants, a large group draws attention: pesticides applied in agricultural areas. Pesticides are substances used to control weeds, insects, fungi, bacteria and other organisms that, under certain specific conditions, are considered pests in crops. More than 4 million tonnes of pesticides are applied annually in agricultural areas worldwide (FAO, 2018), with expectations of Increase over the years due to population growth and higher demand for food.