实验动物与比较医学 ›› 2020, Vol. 40 ›› Issue (1): 65-69.DOI: 10.3969/j.issn.1674-5817.2020.01.011

• 论著 • 上一篇    下一篇

紫海胆急性毒性试验方法标准化探讨

赖素群, 余露军, 吴美慧, 曾进, 李建军   

  1. 广东省实验动物监测所, 广东省实验动物重点实验室, 广州 510663
  • 收稿日期:2019-04-24 出版日期:2020-02-25 发布日期:2020-12-18
  • 作者简介:赖素群(1992-), 女, 技术员, 研究方向: 生物学。 E-mail: 13751742796@163.com
  • 基金资助:
    广东省科技计划项目(2017B030314171)

Probe into Standardization of Acute Toxicity Test Method for Sea Urchin (Anthocidaris crassispina)

LAI Suqun, YU Lujun, WU Meihui, ZENG Jin, LI Jianjun   

  1. Guangdong Laboratory Animals Monitoring Institute, Key Laboratory of Guangdong Laboratory Animals, Guangzhou 510663, China
  • Received:2019-04-24 Online:2020-02-25 Published:2020-12-18

摘要: 目的 研究紫海胆急性毒性试验条件,为紫海胆急性毒性试验方法的标准化提供依据。方法 将紫海胆受精卵置于20 ℃、22 ℃、24 ℃、26 ℃、28 ℃和30 ℃水温下培育,观察统计紫海胆胚胎和幼虫的发育时间和死亡率,统计不同起始日龄紫海胆浮游幼虫的Cr6+、Zn2+、3,5-二氯苯酚、十二烷基硫酸钠96 h毒性试验结果及其变异系数。结果 水温24~26 ℃时,紫海胆幼虫成活率较高且发育速度较快; Cr6+、Zn2+、3,5-二氯苯酚、十二烷基硫酸钠对受精后12日龄幼虫的96 h的半数致死浓度(LC50)分别为1.40 mg/L、1.69 mg/L、3.60 mg/L和3.95 mg/L; 12日龄紫海胆敏感性适中且其毒性试验结果变异系数较低。结论 紫海胆浮游幼虫急性毒性试验适宜水温为24~26 ℃,最佳起始试验日龄为受精后12 d,紫海胆是一种适于海洋污染物毒性测试物种。

关键词: 紫海胆, 急性毒性, 标准化, 变异系数

Abstract: Objective To optimize the sea urchin (Anthocidaris crassispina) acute toxicity test conditions and provide the scientific basis for standard test methods. Methods Cultivate sea urchins at a water temperature of 20 ℃, 22 ℃, 24 ℃, 26 ℃, 28 ℃ and 30 ℃ respectively, and record the larval development time and mortality. Calculate the 96 h LC50 and the coefficient of variation of Cr6+, Zn2+, 3,5- Ddichlorophenol, Sodium dodecyl sulfate on the larvae at different developmental stages. Results In 24-26 ℃ water temperature, the survival rate was higher and the larval were growing more rapidly. The 96 h LC50 of 12 day-old sea urchin for Cr6+, Zn2+, 3,5-Ddichlorophenol, Sodium dodecyl sulfate were 1.40, 1.69, 3.60 and 3.95 mg/L respectively. The sensitivity of 12 day-old sea urchin was moderate and the coefficient of variation of toxicity test was low. Conclusions The suitable temperature of acute toxicity test for sea urchin larvae is 24-26 ℃, and the best starting day age for the test is 12 days age. Anthocidaris crassispina is a species suitable for marine pollutant toxicity test.

Key words: Sea urchin(Anthocidaris crassispina), Acute toxicity, Standardized, Coefficient of variation

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