Water analysis intended for primary contact recreation (Guaxinduva waterfall) using Tradescantia pallida as bioindicator of genotoxicity. Aline Spasiani Ferreira, Gustavo Henrique Gonçalves, Luciana Bizeto, Claudia Moura, Ana Beatriz Carollo Rocha-Lima

Abstract

This study aimed to examine the toxicity of water samples collected in the waterfall Valley Guaxinduva, city Cabreúva-SP compared to the blank controls, positive and negative, using plant species T. pallida purpurea as water quality bioindicator. For this, approximately 80 to 100 stems of the species Tradescantia pallida purpurea (Trad-MCN) were collected, which went through stages of the intoxication process with the collected water sample; later it was realized the making of blades extracting and macerating the buds of young stems that were stained, after this process was performed the microscopic reading of 300 tetrad for each sample. There was a mean prevalence of micronuclei in the sample water collected in the study compared to the positive control, and even a moderate number is higher than the negative control. It is understood that the average prevalence of micronuclei found in the experimental sample indicates intermediate values of toxic substances in the analyzed water, so that it should not be considered innocuous to recreation of contact.