Departamento de Zoologia, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife 50670-901, Brazil.
Departamento de Zoologia, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife 50670-901, Brazil.
Mar Pollut Bull. 2024 Oct;207:116819. doi: 10.1016/j.marpolbul.2024.116819. Epub 2024 Aug 24.
Toxicity of water accommodated fractions (WAF) from the oil spilled on the Brazilian coast at different stages of weathering were investigated using Danio rerio. Weathering stages included emulsified oil that reached the coast (OM) and oil collected 50 days later deposited on beach sand (OS) or adhered to shore rocks (OR). Parent and alkylated naphthalenes decreased whereas phenanthrenes increased from less weathered WAF-OM to more weathered WAF-OS and WAF-OR. More weathered WAF-OS and WAF-OR were more potent inducers of zebrafish developmental delay, suggesting that parent and alkylated phenanthrenes are involved. However, less weathered WAF-OM was a more potent inducer of failure in swim-bladder inflation than more weathered WAF-OS and WAF-OR, suggesting that parent and alkylated naphthalenes are involved. Decreases in heart rates and increased heart and skeletal deformities were observed in exposed larvae. Lowest observed effect concentrations for different developmental toxicity endpoints are within environmentally relevant polycyclic aromatic hydrocarbon concentrations.
使用斑马鱼研究了在不同风化阶段从巴西海岸溢油的水可容纳部分（WAF）的毒性。风化阶段包括到达海岸的乳化油（OM）和 50 天后沉积在海滩砂上的油（OS）或附着在岸边岩石上的油（OR）。与风化程度较低的 WAF-OM 相比，风化程度较高的 WAF-OS 和 WAF-OR 中的母体和烷基化萘减少，而菲增加。风化程度较高的 WAF-OS 和 WAF-OR 更能诱导斑马鱼发育迟缓，表明母体和烷基化菲参与其中。然而，与风化程度较高的 WAF-OS 和 WAF-OR 相比，风化程度较低的 WAF-OM 更能诱导鳔充气失败，表明母体和烷基化萘参与其中。暴露的幼虫出现心率降低和心脏和骨骼畸形增加。不同发育毒性终点的最低观察到效应浓度处于环境相关多环芳烃浓度范围内。
