Institute of Aquatic Science and Technology, College of Hydrosphere Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
Mar Pollut Bull. 2024 Sep;206:116769. doi: 10.1016/j.marpolbul.2024.116769. Epub 2024 Jul 25.
Marine organisms, especially top predators such as sharks, are susceptible to environmental pollutants like microplastics (MPs) and phthalate esters (PAEs), leading to ecosystem risks. Research on contamination in these apex species is, however, still limited. This study investigated MPs and PAEs in multiple shark species (Isurus oxyrinchus, Alopias superciliosus, Alopias pelagicus, Carcharhinus brevipinna, and Sphyrna zygaena) off Taiwan's eastern coast. Gastric tissue analyses revealed ubiquitous microplastics (2-31 particles), which positively correlated with body lengths and weights for Isurus oxyrinchus. Blue, fiber-shaped (1-2 mm), and rayon-based MPs are likely associated with textile fiber pollution. The PAEs concentration mean was 7035 ± 6829 ng/g, ww, having DEHP and DiNP as primary compounds. This study highlights pervasive contamination in Pacific Ocean sharks, emphasizing anthropogenic impact on top oceanic predators and providing essential insights for food safety and MP accumulation.
海洋生物，尤其是鲨鱼等顶级掠食者，容易受到微塑料（MPs）和邻苯二甲酸酯（PAEs）等环境污染物的影响，从而对生态系统造成风险。然而，对这些顶级物种的污染研究仍然有限。本研究调查了台湾东部沿海地区多个鲨鱼物种（灰鲭鲨、姥鲨、噬人鲨、短尾真鲨和尖吻鲭鲨）体内的 MPs 和 PAEs。胃组织分析显示普遍存在微塑料（2-31 个颗粒），灰鲭鲨的微塑料数量与体长和体重呈正相关。蓝色、纤维状（1-2 毫米）和人造丝基 MPs 可能与纺织纤维污染有关。PAEs 的浓度平均值为 7035 ± 6829ng/g，ww，主要化合物为 DEHP 和 DiNP。本研究强调了太平洋鲨鱼普遍受到污染，突显了人为活动对海洋顶级掠食者的影响，为食品安全和 MP 积累提供了重要的见解。
