Bioconcentrations of herbicides used in sugarcane crops in tilapia (Oreochromis niloticus) and the risk for human consumption

Abstract

The practice of intensive herbicide use in the sugarcane industry has a high risk of compromising the quality of the water and the organisms that live there due to losses through runoff, leaching and other processes. In this work, the dynamics of four herbicides present in three different mixtures were evaluated through their incorporation and elimination in the muscle tissue of tilapia ( Oreochromis niloticus ). The highest mean values of bioconcentration factors were 1.730 for ametryn, 0.891 for tebuthiuron, 0.322 for hexazinone and 4.783 for diuron. Diuron presented the highest risk regarding the consumption of tilapia fillets by the population. However, considering that the fish would reach maximum levels of diuron when exposed to extremely high concentrations, an individual weighing 70 kg would need to ingest approximately 1.5 kg of this food product to surpass the acceptable daily intake of 0.007 mg kg −1 body weight. It was concluded that the risk of injury to the population consuming tilapia fillets from fish exposed to herbicides in water arising from sugarcane activities is very low. According to the risk estimation performed in this work, which is substantiated by the assumptions of the World Health Organization and the International Life Sciences Institute, there is a low risk of injury to the population consuming tilapia fillets from fish exposed to water containing herbicides in concentrations arising from sugarcane activities. However, as the risk was estimated from laboratory conditions, caution should be taken where herbicide applications are carried out with high frequency near water bodies, as the consumption of fish from these areas is quite common.

Evaluation of health and environmental risks for juvenile tilapia (Oreochromis niloticus) exposed to florfenicol

“…This has occurred because fish are important sources of protein and are rich in vitamins and omega-3s ( Jackson et al., 2019 ). Among the cultivated species, tilapia is the most produced fish in Brazil, corresponding to over half of the country's production with great economic interest ( Jonsson et al., 2019 ; Piscicultura, 2018 ), and representing 8.3% of the total world fish production, following carp fishes only ( FAO, 2020 ).…”

Agrotóxicos: críticas à regulação que permite o envenenamento do país

“…Câncer de próstata, câncer de ovário (Mostafalou & Abdollahi, 2017), bioacumula em peixes (Jonsson et al, 2019).…”

“…Resíduos persistentes na água e em organismos. Não atende ao limite máximo de resíduo, 0,01 mg/Kg (European Comission, 2020b); bioacumula em peixes (Jonsson et al, 2019), desregulador endócrino em peixes (Almeida et al, 2018).…”

Riboflavin as a green sorbent in dispersive micro‐solid‐phase extraction of several pesticides from fruit juices combined with dispersive liquid–liquid microextraction

“…They are considered as a crucial part of agriculture [3]. However, their residues in different fruits are harmful for human health and can cause different diseases through nutrition [4,5]. Therefore, determination of pesticide residues concentration in fruit juices is necessary, specially taking into account its high consumption by children.…”