Eduardo Alves de Almeida is a biologist with Ph.D. in Biochemistry, and is a full professor at the Regional University of Blumenau, Brazil. He has extensive experience in ecotoxicology, working since 1996 on the effects of environmental pollutants on aquatic vertebrates and invertebrates. He currently coordinates the Center for Studies in Aquatic Toxicology, at the Regional University of Blumenau, where he conducts studies on the effects of pesticides and pharmaceutical compounds on amphibian tadpoles. Juliane Silberschmidt Freitas is a biologist with a Ph.D. in Animal Biology from the State University of São Paulo, Brazil. Her Ph.D. internship was held at the University of California (UCR) and postdoctoral in Ecotoxicology at the University of São Paulo (USP). Research on amphibians began in 2008 and since 2013 she has been dedicated to understanding the impacts of contaminants on tadpoles. Currently, she teaches Animal Physiology at the University of Minas Gerais (UEMG).