Yacoubi Lamia, El Zrelli Radhouan Belgacem, Hsu Hua Hsun, Lin Yu-Jia, Savoca Dario, Gopalan Jinoy, Nazal Mazen, Bhuyan Md Simul, Arculeo Marco, Rabaoui Lotfi Jilani
University of Tunis El Manar, Faculty of Science of Tunis, Laboratory of Biodiversity & Parasitology of Aquatic Ecosystems (LR18ES05), University Campus, 2092 Tunis, Tunisia.
SADEF Agronomy & Environment, 30 Rue de la Station, 68700 Aspach-Le-Bas, France.
Sci Total Environ. 2023 Nov 25;901:165990. doi: 10.1016/j.scitotenv.2023.165990. Epub 2023 Aug 1.
This is a first attempt to assess the levels of trace elements, PAHs, and TPHs in six elasmobranch species (Carcharhinus dussumieri, C. sorrah, Chiloscyllium arabicum, Gymnura poecilura, Sphyrna lewini, S. mokarran) from the Arabian Gulf. The chemical analysis showed that the concentrations of contaminants differed significantly between liver and muscle samples with both pelagic and benthic species and all families. For all species, contaminant concentrations were significantly higher in the liver than in the muscle. While muscle contaminant concentrations differed significantly with respect to species' lifestyles and families, those of liver showed no significant differences between pelagic and benthic species, neither between the four families nor between the six species. None of the analysed contaminants exceeded the internationally recognized standards in all studied species. These results enrich the knowledge on the bioaccumulation of contaminants in elasmobranchs and allow to assess the environmental status of the Arabian Gulf.
这是首次尝试评估来自阿拉伯湾的六种软骨鱼类（杜氏真鲨、沙拉真鲨、阿拉伯斑竹鲨、豹纹魟、无沟双髻鲨、路氏双髻鲨）体内的微量元素、多环芳烃和总石油烃水平。化学分析表明，无论是远洋和底栖物种还是所有科属，肝脏和肌肉样本中的污染物浓度均存在显著差异。对于所有物种而言，肝脏中的污染物浓度显著高于肌肉。虽然肌肉中的污染物浓度因物种的生活方式和科属不同而存在显著差异，但肝脏中的污染物浓度在远洋和底栖物种之间、四个科属之间以及六个物种之间均无显著差异。在所有研究物种中，所分析的污染物均未超过国际公认标准。这些结果丰富了关于软骨鱼类污染物生物累积的知识，并有助于评估阿拉伯湾的环境状况。
