Avaliação da toxicidade de cianobactérias do lago ornamental do Ouro Minas Grande Hotel e Termas de Araxá - MG

Abstract

Several occurrences of cianobacteria blooms are commonly reported in many countries including Brazil, where a large amount of species can cause negative impacts on the water quality, releasing toxins, causing bad taste and also some unpleasant smell. During the elaboration of this work, the water of Ouro Minas Grande Hotel Termas de Araxlakes wasanalyzed with ELISA and mouse bioassay procedures. Despite the occurrence of a large amount of Anabaena planctonica, the strain was not toxic. Anyway, new local blooms can be a risk to the population, since that the water is used to fishing and recreation, causing damages like skin irritation and also long-term problems resulting from fish ingestion. With that in mind, a constant monitoring of the water would be the most prudent decision to make.