生态与农村环境学报 ›› 2012, Vol. 28 ›› Issue (5): 532-538.doi:

• 污染控制与修复 • 上一篇    下一篇

2,4’-DDT对斑马鱼生长、繁殖力及卵黄蛋白原的影响

丁科, 韩志华, 吴迪, 单正军   

  1. 南京农业大学资源与环境科学学院
  • 收稿日期:2012-03-02 修回日期:2012-07-05 出版日期:2012-09-25 发布日期:2012-10-08
  • 通讯作者: 单正军 环境保护部南京环境科学研究所 E-mail:szj@nies.org
  • 作者简介:丁科(1986-),男,安徽太和人,硕士生,主要从事农药环境安全评价和毒理学方面的研究。E-mail:keding0728@163.com
  • 基金资助:

    公益性科研院所基本科研业务专项(200909091)

Impacts of 2,4’-DDT on Growth, Reproduction and Vitellogenin(Vtg) of Zebrafish

DING  Ke, HAN  Zhi-Hua, WU  Di, SHAN  Zheng-Jun   

  1. College of Resources and Environmental Science,Nanjing Agricultural University
  • Received:2012-03-02 Revised:2012-07-05 Online:2012-09-25 Published:2012-10-08
  • Contact: SHAN Zheng-Jun Nanjing Institute of Environmental Sciences,Ministry of Environmental Protection E-mail:szj@nies.org

摘要: 以斑马鱼体内卵黄蛋白原(Vtg)作为雌激素污染物的生物标志物,比较研究了不同浓度2,4′-DDT对成年斑马鱼生长、发育、繁殖以及体内Vtg含量的影响。结果表明,当水环境中ρ(2,4′-DDT)为2和10 μg·L-1时,斑马鱼产卵量和受精率与空白和溶剂对照组相比均显著下降(P<0.05)。当水环境中ρ(2,4′-DDT)为0.2、2和10 μg·L-1时,斑马鱼肝脏指数与空白和溶剂对照组相比显著升高(P<0.05);10 μg·L-12,4′-DDT处理组雄性斑马鱼体内Vtg含量显著高于空白和溶剂对照组(P<0.05),而0.2、2和10 μg·L-12,4′-DDT处理组雌性斑马鱼体内Vtg含量均显著高于空白和溶剂对照组(P<0.05),且随暴露浓度的增加而增大。SDS-PAGE检测及免疫印迹分析均显示雄鱼血液内出现Vtg特异条带,表明2,4′-DDT对斑马鱼具有雌激素效应。

关键词: 2,4′-滴滴涕, 斑马鱼, 卵黄蛋白原(Vtg), 激素效应

Abstract: Using zebrafish’s vitellogenin as a biomarker of estrogenic pollutants, a comparative study was carried out to determine impacts of 2,4 '-DDT, varying in concentration, on growth, development, reproduction and vitellogenin in vivo. Results show that in water containing 2 and 10 μg•L-1 of 2,4 '-DDT, the egg yield and egg fertilization rate of fish decreased significantly, as compared with the blank group (P<0.05). In water containing 0.2, 2, 10 μg•L-1 of 2,4 '-DDT, the fish increased significantly in its hepaticosomatic index (P<0.05); A significant increase was observed in vitellogenin level of male fish treated with 10 μg•L-1 2,4 '-DDT (P<0.05), and of female fish treated with 0.2, 2, and 10 μg•L-1 2,4 '-DDT (P<0.05). And the increase got more significant with the exposure increasing in concentration . SDS-PAGE and Western blotting analysis revealed that a Vtg fragment appeared in the blood of male fish, which indicates that the 2,4 '-DDT has estrogenic effects on zebrafish.

Key words: 2,4 '-DDT, zebrafish, vitellogenin, estrogenic effect

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