Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
J Hazard Mater. 2018 Oct 15;360:97-105. doi: 10.1016/j.jhazmat.2018.07.110. Epub 2018 Aug 3.
Uptake and toxicity of microplastics on marine organisms have been reported elsewhere. However, there is limited knowledge regarding the ecological effects of microplastics on marine organisms. In this study, we investigated the effects of polystyrene microplastics (1 × 10 microspheres per L) on the behavior, energy reserve and nutritional composition of juvenile jacopever (Sebastes schlegelii). Compared to the controls, fish treated by microplastics showed lower sensitivity toward the added food in the tank, and increased foraging time, indicating that microplastics significantly weakened feeding activity of the fish. Interestingly, the microplastics treated-fish obviously reduced swimming speed and range of movement, demonstrating that polystyrene microplastics could have negative effect on hunting behavior. Furthermore, polystyrene microplastics accumulated in the gills and intestine, causing significant histopathological changes in the gallbladder and liver. Moreover, the energy reserve and nutritional quality of fish were influenced by microplastics as evidenced by lower growth, protein and lipid contents. Our results highlighted the potential negative effects of microplastics on marine ecological function and food safety.
微塑料对海洋生物的摄取和毒性已在其他地方报道过。然而，关于微塑料对海洋生物的生态影响的知识有限。在这项研究中，我们调查了聚苯乙烯微塑料（每升 1×10 个微球）对幼年拟沙丁鱼（Sebastes schlegelii）行为、能量储备和营养成分的影响。与对照组相比，用微塑料处理的鱼对水箱中添加的食物的敏感性较低，觅食时间增加，表明微塑料显著削弱了鱼的摄食活动。有趣的是，用微塑料处理过的鱼明显降低了游泳速度和活动范围，表明聚苯乙烯微塑料可能对捕猎行为有负面影响。此外，微塑料在鱼的鳃和肠道中积累，导致胆囊和肝脏发生明显的组织病理学变化。此外，微塑料还影响了鱼的能量储备和营养质量，表现为生长、蛋白质和脂质含量降低。我们的结果强调了微塑料对海洋生态功能和食品安全的潜在负面影响。
