The Combined Effect of Plastic Particles Size and Concentration on Rotifers’ (Brachionus plicatilis) Performance  

作　　者：SUI Yanming WANG Senyang MOHSEN Mohamed ZHANG Longsheng SHEN Mengyan LIU Zhiquan NGUYEN Haidang ZHANG Shengmao LI Kaixing LV Linlan DONG Xuexing 

机构地区：[1]School of Marine and Biological Engineering,Yancheng Institute of Technology,Yancheng 224002,China [2]Department of Animal Production,Faculty of Agriculture,Al-Azhar University,Nasr City,Cairo 11884,Egypt [3]CAS Key Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China [4]School of Life Sciences,East China Normal University,Shanghai 200241,China [5]Research Institute for Aquaculture No.1,Dinh Bang-Tu Son-Bac Ninh 16352,Vietnam [6]East China Sea Fishery Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200090,China

出　　处：《Journal of Ocean University of China》2022年第2期509-519,共11页中国海洋大学学报（英文版）

基　　金：funded by research grants from the Na-tural Science Foundation of China(Nos.41706142 and 61936014);the National Modern Agricultural Industry Technology System Construction Project(No.CARS-49);the National Key R&D Program during the 13th Five-Year Plan Period(No.2018YFD900603).Dr.Yan-ming Sui is supported by a fellowship from China Schol-arship Council.

摘　　要：The presence of microplastics in aquatic ecosystems is of increasing global concern.Nano-sized plastics,in particular,can penetrate the cell membrane and cause biological death.Our study evaluated the combined impacts of several polystyrene mi-crospheres’sizes and nominal concentrations on the overall performance changes of Brachionus plicatilis.Experimental animals were exposed to three microplastic sizes(0.08,0.5 and 6μm)and five nominal concentrations(0,0.5,2,8,32μg mL−1)for 20 d.Our results showed that the toxicological effect of particle size on rotifers did not significantly depend on the nominal concentration.The interaction between the nominal concentration and size occurred only for body length and lorica width.Specifically,high nominal concentrations of microplastics that were close to nanometer size significantly impaired the overall vitality of rotifers,embodied in shortage of body type,delay in the arrival of maturity,reduction in the cumulative number of neonates,and the advance of the death process.In comparison,fair-sized size(0.5 and 6μm)displayed non-significant damage except for individual groups.Most notably,the net reproductive yield was only a third of what it was in the original environment,implying that there was not much fertility left.Besides,with the development of rotifers,the adverse effects of polystyrene microsphere drive had become more and more serious.

关 键 词：microplastic ZOOPLANKTON environmental stress life-history parameters 

分 类 号：X505[环境科学与工程—环境工程]