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巩宁1,2,*,邵魁双3,张钰昆1,2,景德清1,2,孙野青1,2,#. 氯代阻燃剂得克隆对孔石莼(Ulva pertusa)繁殖及早期发育的影响[J]. 生态毒理学报, 2017, 12(3): 556-563
氯代阻燃剂得克隆对孔石莼(Ulva pertusa)繁殖及早期发育的影响
Effects of Dechlorane Plus on Reproduction and Early Development of Ulva pertusa
投稿时间:2017-01-14  修订日期:2017-03-21
DOI:10.7524/AJE.1673-5897.20170114013
中文关键词:  得克隆  孔石莼  繁殖  早期发育
英文关键词:Dechlorane Plus  Ulva pertusa  reproduction  early development
基金项目:国家重点研发计划资助项目“浒苔着生机理与防控技术”(2016YFC1402104);国家自然科学基金(No. 41301560)
作者单位
巩宁1,2,*,邵魁双3,张钰昆1,2,景德清1,2,孙野青1,2,# 1. 大连海事大学环境科学与工程学院大连116026 2. 大连海事大学环境系统生物学研究所大连116026 3. 国家海洋环境监测中心大连116023 
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中文摘要:
      得克隆(Dechlorane Plus, DP)是一种在全世界范围内广泛使用的氯代阻燃剂,具有潜在的毒性效应。但目前已有的生态毒理学数据还十分有限。本文选择分布广泛的大型绿藻孔石莼(Ulva pertusa)作为研究对象,探讨不同浓度DP对孔石莼繁殖细胞转化及早期发育的影响。结果表明,低浓度(10-6~10-8 mol L-1)DP暴露不同程度地影响孔石莼繁殖细胞的形成、释放及附着,在试验浓度范围内呈现一定的剂量效应关系。与空白对照组相比,DP处理(10-6 mol L-1)分别使繁殖细胞的形成率、释放率和附着率显著降低了76.76%、46.26%和85.64%。在丝状幼体阶段,DP处理组(10-8和10-7mol L-1)幼体体长分别比对照组显著减少了32.74%和38.98%。结果表明,DP暴露抑制了孔石莼的繁殖及早期发育。基于绿藻繁殖特性及早期发育的生物学指标对DP暴露较为敏感,能够为海洋环境的DP生物学效应研究提供数据。
  
AuthorAffiliation
Gong Ning1,2,*, Shao Kuishuang3, Zhang Yukun1,2, Jing Deqing1,2, Sun Yeqing1,2,#1. School of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China 2. Institute of Environmental Systems Biology, Dalian Maritime University, Dalian 116026, China 3. National Marine Environmental Monitoring Center, Dalian 116023, China
英文摘要:
      Dechlorane Plus (DP) is a highly chlorinated flame retardant which is globally ubiquitous. However, limited information is available on its toxicity in aquatic organisms, especially for marine algae. In this study, the common green macroalgae Ulva pertusa was used to evaluate possible eco-toxicological response, including the reproduction and early development with the low-dose DP exposure (10-6 to 10-8 mol L-1). The results showed that DP inhibited the reproductive cells formation, release and adhesion in dose-effect manner. After exposure to DP in the concentration of 10-6 mol L-1, the rate of formation, release and adhesion were significantly decreased by 76.76%, 46.26% and 85.64%, respectively. The length of filaments was decreased by 32.74% and 38.98%, respectively with 10-8 and 10-7 mol L-1of DP treatments. Our observations firstly indicated that DP disrupted the transformation of reproductive cells of U. pertusa as well as their early development. Reproductive cells formation, release and adhesion in macroalgae were sensitive biomarkers which can be used for assessing the marine ecological risks of DP.
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