Du Yunchao, Teng Jia, Zhao Jianmin, Ren Jingying, Ma Hengyuan, Zhang Tianyu, Xia Bin, Sun Shan, Wang Qing
Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, PR China; Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, PR China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, PR China.
School of Marine Science and Technology, Harbin Institute of Technology, Weihai, 264209 16, PR China.
Mar Environ Res. 2024 Apr;196:106434. doi: 10.1016/j.marenvres.2024.106434. Epub 2024 Mar 5.
The adverse impacts of microplastics (MPs) or ocean acidification (OA) on mollusks have been widely reported, however, little is known about their combined effects on mollusks. The oysters Crassostrea gigas were exposed to two sizes of polystyrene MPs with 1 × 10 particles/L (small polystyrene MPs (SPS-MPs): 6 μm, large polystyrene MPs (LPS-MPs): 50-60 μm) at two pH levels (7.7 and 8.1) for 14 days. The antagonistic effects between MPs and OA on oysters were mainly observed. Single SPS-MPs exposure can induce CAT enzyme activity and LPO level in gills, while LPS-MPs exposure alone can increase PGK and PEPCK gene expression in digestive glands. Ocean acidification can increase clearance rate and inhibit antioxidant enzyme activity, whereas combined exposure of OA and SPS-MPs can affect the metabolomic profile of digestive glands. This study emphasized that the potential toxic effects of MPs under the scene of climate change should be concerned.
微塑料（MPs）或海洋酸化（OA）对软体动物的不利影响已有广泛报道，然而，关于它们对软体动物的联合影响却知之甚少。将太平洋牡蛎暴露于两种浓度为1×10个颗粒/升的聚苯乙烯微塑料（小聚苯乙烯微塑料（SPS-MPs）：6微米，大聚苯乙烯微塑料（LPS-MPs）：50 - 60微米）以及两种pH水平（7.7和8.1）下，持续14天。主要观察到微塑料和海洋酸化对牡蛎的拮抗作用。单独暴露于SPS-MPs可诱导鳃中CAT酶活性和LPO水平，而单独暴露于LPS-MPs可增加消化腺中PGK和PEPCK基因表达。海洋酸化可提高清除率并抑制抗氧化酶活性，而海洋酸化与SPS-MPs的联合暴露可影响消化腺的代谢组学特征。本研究强调应关注气候变化背景下微塑料的潜在毒性作用。
