PDF(Pubmed)
Abstract：
Increasing plastic contamination poses a serious threat to marine organisms. Microplastics (MPs) ingestion can represent a risk for the organism itself and for the ultimate consumer. Through the analysis of the gastrointestinal tract, coupled with stable isotope analysis on the muscle tissue, this study provides insights into the relationship between MPs pollution and ecology in two commercial marine species caught in the Central Tyrrhenian Sea: Aristaeomorpha foliacea and Parapenaeus longirostris. Stable isotope analysis was conducted to determine the trophic position and the trophic niche width. The gastrointestinal tracts were processed, and the resultant MPs were analysed under FT-IR spectroscopy to estimate the occurrence, abundance, and typology of the ingested MPs. The trophic level of the species was similar (P. longirostris TP = 3 ± 0.10 and A. foliacea TP = 3.1 ± 0.08), with an important trophic niche overlap, where 38% and 52% of P. longirostris and A. foliacea has ingested MPs, respectively. Though species-level differences may not be evident regarding MP\'s abundance per individual, a high degree of dissimilarity was noted in the typologies of ingested particles. This research provides valuable insights into how MPs enter marine trophic webs, stressing that isotopic niche analysis should be combined with other methods to explain in detail the differences in MPs ingestion.
摘要：
塑料污染的增加对海洋生物构成了严重威胁。微塑料（MP）的摄入可能对生物体本身和最终消费者构成风险。通过对胃肠道的分析,再加上对肌肉组织的稳定同位素分析，这项研究提供了有关在Tyrrenian中部海域捕获的两种商业海洋物种的MP污染与生态之间关系的见解：Aristaeomorphafoliacea和Parapenaeuslongirostris。进行稳定同位素分析以确定营养位置和营养生态位宽度。胃肠道被处理，并在FT-IR光谱法下分析所得的MPs以估计其发生，丰度,以及被摄入议员的类型学。该物种的营养水平相似(P.龙珠TP=3±0.10，落叶TP=3.1±0.08)，具有重要的营养生态位重叠，其中38%和52%的龙舌兰假单胞菌和落叶假单胞菌摄入了MP，分别。尽管就每个个体的MP丰度而言，物种水平差异可能并不明显，在摄入颗粒的类型中发现了高度的差异。这项研究为国会议员如何进入海洋营养网提供了有价值的见解，强调同位素生态位分析应与其他方法相结合，以详细解释MP摄入的差异。
