刘源^1,2,
陈法军¹,
周可新^2,,
1. 南京农业大学植物保护学院, 南京 210095;
2. 环境保护部南京环境科学研究所, 南京 210042

作者简介: 刘源(1990-),女,硕士,研究方向为水生态毒理学,E-mail:vainy21@163.com.

通讯作者: 周可新,zkx@nies.org

基金项目: 环保公益性行业科研专项资助(201309049)


中图分类号: X171.5

Comparative Study on the Toxicity Influence of Nano-SiO₂ on Artemia francisana and Artemia parthenogenetica nauplii

Liu Yuan^1,2,
Chen Fajun¹,
Zhou Kexin^2,,
1. College of Plant Protection, Nanjing Agriculture University, Nanjing 210095, China;
2. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China

Corresponding author: Zhou Kexin,zkx@nies.org

CLC number: X171.5

-->

摘要
HTML全文
图(0)表(0)
参考文献(0)
相关文章
施引文献
资源附件(0)
访问统计

摘要:研究了纳米二氧化硅(Nano-SiO₂)悬浮液对美国大盐湖两性生殖型卤虫(Artemia francisana, GSL)和渤海湾孤雌生殖型卤虫(Artemia parthenogenetica, BH)无节幼体的急性毒性和抗氧化酶系统的影响。研究结果表明，Nano-SiO₂对GSL和BH无节幼体24 h-LC₅₀分别为23.02 mg·mL^-1和20.96 mg·mL^-1，属低级毒性。Nano-SiO₂降低了GSL和BH无节幼体还原型谷胱甘肽(GSH)含量，抑制了过氧化氢酶(CAT)和超氧化物歧化酶(SOD)活性，致组织丙二醛(MDA)含量升高，表明氧化应激反应是导致Nano-SiO₂对卤虫无节幼体致死的作用机制之一。
关键词: 纳米二氧化硅/
两性生殖卤虫/
孤雌生殖卤虫/
急性毒性/
氧化损伤

Abstract:This paper investigated the acute toxicity of Nano-SiO₂ suspension to the Great Salt Lake bisexual Artemia (Artemia francisana, GSL) nauplii and the Bohai Bay parthenogenetic Artemia (Artemia parthenogenetica, BH) nauplii as well as the effects on their antioxidant systems. The results showed that 24 h-LC₅₀ of Nano- SiO₂ to GSL and BH nauplii were 23.02 mg·mL^-1 and 20.96 mg·mL^-1 respectively. Nano-SiO₂ reduced glutathione (GSH) contents in GSL and BH nauplii, inhibited their catalase (CAT) and superoxide dismutase (SOD) activities, increased malondialdehyde (MDA) contents, suggesting that oxidative stress was one of the lethal mechanisms of Nano- SiO₂ on Artemia nauplii.
Key words:nano-SiO₂/
Artemia francisana/
Artemia parthenogenetica/
acute toxicity/
oxidative damage.