Microplastic contamination was investigated, for the first time, in the gastrointestinal tract of two commercial fish species Sarpa salpa and Liza aurata from the lagoons of Bizerte and Ghar El Melh, during February 2019. Microplastics, ranging from 0.2 to 5 mm, were found in the two investigated fish species with high levels in fishes from the lagoon of Bizerte (65.33 ± 6.50 and 66.40 ± 5.12 items individual⁻¹ in L. aurata and S. salpa, respectively). In the lagoon of Ghar El Melh, microplastic ingestion showed statistically significant variability between the two species (42.00 ± 6.08 items individual⁻¹ in S. sapla and 22.40 ± 3.97 items individual${}^{-1}$in L. aurata). Isolated microplastics appeared in a variety of coloured types, such as fibres> fragments> films and were identified as Polypropylene and Polyethylene polymers by FTIR-ATR analysis. The obtained results indicate the growing threat that affects the two sampling sites and suggest the inclusion of the studied fish species on the list of marine plastic ingestion bioindicators.

2019年2月，在比塞大和加尔·埃尔·梅尔泻湖的两个商业鱼类Sarpa salpa和Liza aurata的胃肠道中首次调查了微塑性污染。两个研究鱼类具有高水平鱼类从比塞的泻湖（65.33±6.50和66.40±5.12的项目个体^-1在L.头鲷和S.萨尔帕分别）。在加尔埃尔梅尔（Ghar El Melh）的泻湖中，两种物种之间的微塑性摄食显示出统计学上的显着差异（沙棘中的个体为42.00±6.08项，^-1为个体，而个体为22.40±3.97项。${}^{-\mathrm{1个}}$在L. aurata中）。分离出的微塑料以各种有色类型出现，例如纤维>碎片>薄膜，并通过FTIR-ATR分析鉴定为聚丙烯和聚乙烯聚合物。获得的结果表明影响这两个采样地点的威胁正在增加，并表明将研究的鱼类列入海洋塑料摄入生物指示剂清单中。