Avaliação da Embriotoxicidade de águas residuais e sedimentos do rio Paraíba do meio, Viçosa - AL

Abstract

Human activity has been modifying the aquatic ecosystem over the years, depositing contaminants, such as toxic components, into groundwater that can reach people directly impacting them. It is estimated that in Brazil about 105 million people inhabit areas at risk of contracting diseases caused by microorganisms and toxic derivatives in untreated or contaminated water, thus, potentializing possible anomalies. The Paraíba do Meio river, fundamental for the agricultural development and subsistence of countless riverside families in the of the Alagoas Forest, in the municipality of Viçosa, in the state of Alagoas, exposed, to serve as a deposit of non-neutralized waste. In this sense, the project envisioned the use of the test of acute toxicity in embryos of Zebrafish or Zebrafish (Danio rerio) to evaluate wastewater and sediments from it. 30 embryos were used pertest, packs in plates/wells with 2 ml in a total of 05 embryos per wells, including five crescents and one control, every 24 hours over a total period of 96 hours, OECD-236/2013 test. It was revealed to the embryotoxicity test that both elements of wastewater and sediments showed bioactivity when indicating the toxic river Paraíba do Meio.