The present study aimed to analyze the concentrations of polycyclic aromatic hydrocarbons (PAHs) in populations of the shellfish Anomalocardia brasiliana and oysters Crassostrea rhizophorae three years after the 2019 oil spill, as well as evaluate histopathological changes on the gill tissues of the bivalves. Individuals of both species were sampled at points along the northern and southern coast of Pernambuco, Brazil. The permanence of oil residues was confirmed, evidenced by the total concentration of PAHs in the shellfish from the northern coast, which was roughly four times higher than the southern one. Among the PAHs analyzed, the low molecular weight compounds naphthalene and anthracene were the main contributors to the total concentration. Histological changes in the gills of the bivalves, were more severe in the specimens sampled on the north coast indicating alterations in the bivalve's health, mainly on the state's northern coast.

本研究旨在分析贝类Anomalocardia brasiliana和牡蛎Crassostrea rhizophorae种群中多环芳烃 (PAH) 的浓度2019 年漏油事件发生三年后，以及评估双壳类动物鳃组织的组织病理学变化。这两个物种的个体都在巴西伯南布哥州北部和南部海岸沿线的地点进行了采样。油残留物的持久性得到证实，北部沿海贝类中多环芳烃的总浓度证明了这一点，该浓度大约是南部沿海贝类的四倍。在分析的多环芳烃中，低分子量化合物萘和蒽是总浓度的主要贡献者。双壳类动物鳃的组织学变化在北海岸采样的标本中更为严重，这表明双壳类动物的健康状况发生了变化，主要发生在该州的北部海岸。