This study assessed the abundance of microplastics (MPs) in muscle, liver, gill, and gastrointestinal tissues of 14 fish species from the Persian Gulf. The quality control showed no significant difference in MPs abundance between blank samples and muscle and liver tissues. The mean abundance of MPs accumulated in gill and gut was 2.85 ± 1.57 and 2.46 ± 1.46 pa/individual, respectively. The maximum mean abundance of MPs was observed in the gill (5.71 pa/ind) of the fish Thunnus tonggol and gut tissue (5.67 pa/ind) of the fish Sphyraena putnamiae. Fiber, black color and size of 23–75 μm were the predominant form of MPs. There was a significant positive correlation between the total fish length and the abundance of MPs. MPs were more abundant in pelagic fish (5.79 ± 5.98) than demersal fish species (3.89 ± 3.53). The level of fish contamination with MPs was low to moderate in comparison to the ranges reported in the literature.

本研究评估了来自波斯湾的 14 种鱼类的肌肉、肝脏、鳃和胃肠组织中微塑料 (MP) 的丰度。质量控制显示空白样品与肌肉和肝脏组织之间的 MPs 丰度没有显着差异。在鳃和肠道中积累的 MP 的平均丰度分别为 2.85 ± 1.57 和 2.46 ± 1.46 pa/个。在金枪鱼的鳃 (5.71 pa/ind)和Sphyraena putnamiae 的肠道组织 (5.67 pa/ind) 中观察到 MP 的最大平均丰度. 纤维、黑色和 23-75 μm 大小是 MP 的主要形式。总鱼长与 MP 丰度呈显着正相关。MPs 在中上层鱼类 (5.79 ± 5.98) 中比底层鱼类 (3.89 ± 3.53) 更丰富。与文献中报道的范围相比，MP 对鱼类的污染水平从低到中等。