Efeitos de microcistinas em Piaractus brachypomus (Actinopterygii, Characidae) e o perfil do consumo de peixes pela comunidade da UFG

• Ano de defesa: 2017
• Autor(a) principal: Bezerra, Roberto Araujo
• Orientador(a): Nogueira, Ina de Souza
• Banca de defesa: Nogueira, Ina de Souza , Vieira, José Daniel Gonçalves, Oliveira, Leandro Gonçalves, Jardim, Fernando Antônio, Dias Júnior, Walter
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Programa de Pós-graduação em Ciências Ambientais (PRPG)
• Departamento: Pró-Reitoria de Pós-graduação (PRPG)
• País: Brasil
• Palavras-chave em Português: Cianotoxinas; Ecotoxicologia; Qualidade da água; Danos genotóxicos
• Palavras-chave em Inglês: Cyanotoxins; Ecotoxicology; Water quality; Genotoxic damage
• Área do conhecimento CNPq: SANEAMENTO AMBIENTAL::ECOLOGIA APLICADA A ENGENHARIA SANITARIA
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tede/8588

The world's fishery production is constantly growing, with expansion of aquaculture parks, fish farms and fish-pay, however, these activities can trigger damages to aquatic systems. The process of eutrophication is characterized by the excess of nutrients available in the water, which when associated with high temperatures and luminosity, provide cyanobacteria blooms, some of which are toxic. Microcystins pose risks to human and other animal health due to the consumption of contaminated fish and can cause serious problems for the aquatic community. The present study had as main objective to evaluate the mutagenic damages that toxic blooms of Microcystis aeruginosa and Microcystis panniformis in different densities of cells can cause when exposed to the Piaractus brachypomus (pirapitinga), native species of the Amazon basin and commercialized in fish farms and fish-pays of the Goiânia metropolitan region, and to evaluate the profile of fish consumption by the community of the Federal University of Goiás. The results showed that even at low densities, the effect of microcystins generated different genomic damages in fish. Juveniles presented erythrocytic nuclear alterations exposed to M. aeruginosa - reniformes: 33%; binucleate: 28.6%; micronucleus: 28.1% and exposed to M. panniformis reniformes: 6.43%; binucleate: 75.5%; micronucleus: 2.4%. There was a higher concentration of microcystins produced by M. panniformis cells. As for the profile of the academic community, more than 80% consume fish, since tilapia is the most preferred species among respondents (22.4%). Of these, only 49.6% go to fish-pay and the main reason for going is leisure with family or friends (46.7%), however, only 21.7% take into account the hygiene of the place, but are unaware of the quality of the waters of these places, as well as that of fish. It was concluded in this study that the group most threatened by the action of cyanotoxins are the fish consumers themselves due to the low concentration found in the muscular tissues and that when investigated, some do not reach the peak of detection, passing unnoticed by the human population.