Low concentration of 2,4,6-tribromophenol (TBP) represents a risk to South American silver catfish Ramdia quelen (Quoy and Gaimard, 1824) population
作者： Nilce Mary Turcatti Folle , Maristela Azevedo-Linhares , Juan Ramon Esquivel Garcia , Angie Thaisa da Costa Souza , Sonia Regina Grötzner
DOI: 10.1016/J.ECOENV.2019.109815
关键词:
摘要: Abstract The 2,4,6-tribromophenol (TBP) is an environmental persistent pollutant widely used as flame retardant, antimicrobial and insecticide agent in wood preservation plastic production. Currently, TBP found compartments such soil, freshwater, groundwater, sewage sludge domestic dust, but the effects to biota risk of exposure aquatic vertebrates are still scarce. In present study, Rhamdia quelen fish embryos (8 h post-fertilization - hpf) were exposed 0.3 3.0 μg L−1 until 96 hpf. Biochemical biomarkers, hatching, survival larvae/embryo malformations evaluated after exposure. Additionally, a mathematical model was proposed evaluate along further generations. results showed that decreased level did not cause significant difference hatching rates. After 72 hpf, individuals from highest tested concentration group more severe than control lower concentrations groups. deformities concentrated on facial region where sensorial structures related behavior present. biochemical biomarkers revealed both oxidative stress neurotoxicity signs contaminant, while application decrease population concentrations. conclusion, current demonstrated toxic R. represents early life stage
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