Pristina longiseta reproduction test: chronic exposure to environmental contaminants

Autor(es)

Cunha de Souza, Tallyson Tavares ; Castro, Gleyson Borges ; Bernegossi, Aline Christine ; Felipe, Mayara Caroline ; Pinheiro, Fernanda Rodrigues ; Colombo-Corbi, Vanessa ; Girolli, Douglas Aparecido ; Gorni, Guilherme Rossi ; Corbi, Juliano Jose

• Tipo de documento: Artigo Científico
• Fonte: Environmental Science and Pollution Research; v. N/A, p. 11-pg., 2022-11-03.

Resumo

Aquatic worms are considered a suitable group to evaluate the effects of contaminants on the environment, although one of the main challenges is to use the species of local occurrence. Recently, Pristina longiseta was suggested to be used in acute bioassays. In this context, this study aimed to establish a chronic exposure for ecotoxicological bioassays using the cosmopolitan species of occurrence in Brazilian freshwater P. longiseta. Firstly, we tested three exposure times (4, 7, and 10 days) under the presence or absence of aeration for reproduction outputs. After determining the best configuration (7 days without aeration), we assessed the effects of the chronic exposures using the standardized reference substance potassium chloride (KCl), the antibiotic sulfamethoxazole (SMX), the flame retardant tetrabromobisphenol A (TBBPA), and the sugarcane vinasse. Our results showed suitability for applying the chronic exposure using P. longiseta and indicated the sensitivity of the offspring to KCl (EC50-7d = 0.51 g/L). Sulfamethoxazole and TBBPA caused a significant decrease in the offspring of P. longiseta (EC50-7d = 59.9 mu g/L and < 62.5 mu g/L, respectively). Sugarcane vinasse showed high toxicity for the species, and 4.26% of vinasse was calculated as EC50-7d. Therefore, the described protocol was successfully applied as an ecotoxicological bioassay to evaluate the effects of environmental contaminants on the reproduction rate of the freshwater worm P. longiseta. (AU)

• Processo FAPESP: 20/11042-0 - Antibióticos em água residuária sintética e hospitalar, pré e pós reatores anaeróbios: efeitos tóxicos para invertebrados aquáticos continentais
• Beneficiário: Gleyson Borges Castro
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 20/09912-6 - Ativa-ETE: avaliação de tecnologias inovadoras voltadas à remoção de nitrogênio e micropoluentes em ETE
• Beneficiário: José Alberto Domingues Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Parceria para Inovação Tecnológica - PITE