海洋科学2026，Vol.50Issue(3)：56-65,10.DOI:10.11759/hykx20260122001
多世代纳米镍暴露对海洋桡足类的综合生理影响与种群适合度研究
Multigenerational exposure to nickel nanoparticles:inte-grated physiological effects and population fitness in a marine copepod
摘要
Abstract
To assess the long-term ecological risks of nanometal pollutants to marine zooplankton,this study used the dominant copepod in the East China Sea,Acartia pacifica,as a model organism in multi-generational nano-nickel exposure experiments.The experiment set environmentally relevant concentration gradients(0.01 and 1.0 mg/L)and systematically measured key physiological and ecological parameters from the F0-exposed generation to the F2 recovery generation,including hatchability,survival rate,development times(including nauplius and gen-eration development times),female ratio,fecal pellets,oviposition,and growth rate(body length,body width).Nano-nickel significantly affected the physiology of Acartia pacifica in a dose-dependent and time-accumulative manner.Compared with the control,low concentration(0.01 mg/L)exposure did not significantly impact reproduc-tive parameters but significantly inhibited feeding capacity in the F0 and F1 generations(P<0.05),reflected by a decline in fecal pellets by 11.6%and 17.6%,respectively.Similarly,high concentration(1.0 mg/L)exposure com-prehensively suppressed growth and reproduction(P<0.05),reducing hatchability by 8.25%and 10.43%in the F0 and F1 generations,respectively.The survival rate of the F1 generation decreased by 12.02%,with feeding and re-productive capacities being co-inhibited.In the F2 generation,after exposure removal,although a few growth and reproductive indicators recovered,the feeding function did not fully recover in the high concentration group(P<0.05),with fecal production still significantly lower than the control by 1.69%.These results confirmed that nano-nickel can exert persistent multigenerational effects on key physiological functions in copepods,with residual impacts even after pollutant removal.This study reveals the potential long-term ecological risks of nano-nickel and provides experimental evidence crucial for improving the risk assessment of emerging pollutants in the marine en-vironment.关键词
纳米镍/太平洋纺锤水蚤/毒性效应/多世代效应Key words
nickel nanoparticles/Acartia pacifica/toxic effects/multigeneration effects分类
资源环境引用本文复制引用
郭永志,石诗珥,周超,刘梦圆,赵玥泽..多世代纳米镍暴露对海洋桡足类的综合生理影响与种群适合度研究[J].海洋科学,2026,50(3):56-65,10.基金项目
自然资源部海洋大气化学与全球变化重点实验室开放基金资助项目(GCMAC2308) （GCMAC2308）
浙江省自然科学基金青年科学基金资助项目(LQ18D060006) （LQ18D060006）
国家自然科学基金重点国际(地区)合作项目(42020104009)Open Project supported by the Key Laboratory of Global Change and Marine-Atmospheric Chemistry,No.GCMAC2308 （地区）
Project supported by Zhejiang Provincial Natural Science Foundation Youth Sci-ence Fund,No.LQ18D060006 （）
Project supported by the Funds for Inter-national Cooperation of the National Natural Science Foundation of China,No.42020104009 （）
