Ocurrence of cyanobacterial bloom and consequences for public health in Northeastern Brazil

• Autor(a) principal: Moreira, Manoela Sousa de Jesus
• Data de Publicação: 2023
• Outros Autores: Macedo, Carla Fernandes
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Baiana de Saúde Pública (Online)
• Texto Completo: https://rbsp.sesab.ba.gov.br/index.php/rbsp/article/view/3385
• topic: Toxinas de cianobactérias; Eutrofização; Florações de algas nocivas; Cianobactérias; Cianotoxinas; Saúde pública; Eutrofização; Biologia; Ecologia; Cyanobacteria toxins; Eutrophication; Harmful algal bloom; Toxinas de cianobacterias; Eutrofización; Floraciones de algas nocivas

The blooms are the result of interactions between physical, chemical, and biological factors, and are characterized by the explosive growth of microorganisms. The proliferations of cyanobacteria indicate deterioration in quality and can be considered public health problems due to the ability of cyanobacteria to produce and release toxins in aquatic environments, especially in supply reservoirs. Thus, this study aimed to review the literature to verify the occurrence of cyanobacteria and cyanotoxin blooms and the effects especially for public health. The methodology used was narrative review of selected papers according to the inclusion criteria. The occurrence of 74 cyanobacteria species was verified, with Microcystis aeruginosa and Raphidiopsis raciborskii being the predominant ones. Potentially toxic species were found in all blooms studies carried out in the Northeast region. Cyanobacterial blooms were found mainly in reservoirs in the Northeast region, along with cyanotoxins (microcystins, cylindrospermopsin, and saxitoxin). Blooms with cyanotoxins have been frequent in aquatic systems, causing changes in the aquatic environment. These changes reach several trophic levels, and can reach man, being a public health problem.