水生态学杂志2025，Vol.46Issue(3)：32-39,8.DOI:10.15928/j.1674-3075.202311140331
壬基酚和17β-雌二醇对尾草履虫种群生长的影响
Effects of Nonylphenol and 17β-estradiol on Population Growth of Paramecium caudatum
摘要
Abstract
In this study,Paramecium caudatum was selected for research,and we explored the toxicities of nonylphenol and 17β-estradiol,and their effects on the population dynamics of P.caudatum using static testing.Nonylphenol is an endocrine disruptor that mimics estrogen,a so-called"environmental estro-gen",and 17β-estradiol is the primary female hormone.The concentration lethal to 50%of the test organ-isms(LC50),the population growth rate(r),and the generation time(G)of P.caudatum were measured un-der different exposure concentrations.The 24hr-LC50 for P.caudatum was 0.099 4 mg/L for nonylphenol and 3.119 9 mg/L for 17β-estradiol,indicating that the acute toxicity of nonylphenol toward P.caudatum is much higher than that of 17β-estradiol.The maximum population density of P.caudatum in both the nonylphenol and 17β-estradiol treatment groups was significantly lower than in the control group(P<0.01).Both environmental estrogens significantly inhibited the population growth of P.caudatum and the inhi-bition increased with the concentration of nonylphenol or 17β-estradiol.A nonylphenol concentration of 0.003 8 mg/L and a 17β-estradiol concentration of 1.450 0 mg/L had highly significant(P<0.01)effects on the P.caudatum population,with respective population growth rates of(0.12±0.036 0)/d,(0.39±0.004 0)/d,and generation times of(5.84±0.036 0)d,(1.77±0.002 0)d.Furthermore,high concentrations of nonylphenol and 17β-estradiol significantly decreased the population growth of P.caudatum.Because P.caudatum is more sensitive to environmental estrogens than Cladocera,it is a more suitable indicator of environmental estrogen pollution in water.Our results provide basic ecotoxicology data and a reference for the ecological risk assessment of nonylphenol and 17β-estradiol.关键词
尾草履虫/壬基酚/17β-雌二醇/急性毒性/慢性毒性/半致死浓度/种群生长Key words
Paramecium caudatum/nonylphenol/17β-estradiol/acute toxicity/chronic toxicity/lethal concentration(LC50)/population growth分类
农业科技引用本文复制引用
刘家乐,齐红莉,李安琪,张欣悦..壬基酚和17β-雌二醇对尾草履虫种群生长的影响[J].水生态学杂志,2025,46(3):32-39,8.基金项目
国家自然科学基金项目(32102764) （32102764）
山东省重大科技创新工程专项"海洋药源生物基础研究"(2018SDKJ0406-4). （2018SDKJ0406-4）
