悬浮物胁迫中国对虾幼体的急性毒性研究

Acute toxicity effects of suspended solids stress on Fenneropenaeus chinensis larvae

中文关键词: 悬浮物  改良寇氏法  中国对虾幼体  急性毒性

英文关键词: Suspended solids  Karbers method  Fenneropenaeus chinensis larvae  Acute toxicity

中文摘要:

      随着沿海经济的迅速发展和海洋资源的大规模开发，海洋工程建设产生的悬浮物会对海洋生物生长发育产生影响。为研究悬浮物对中国对虾(Fenneropenaeus chinensis)幼体的毒性效应，采用室内模拟半静态方法，研究了不同浓度悬浮物对中国对虾幼体的急性毒性效应。结果显示，随着时间的延长，高浓度的悬浮物可抑制中国对虾幼体的游泳能力，中国对虾幼体死亡率呈现出明显的剂量效应关系，悬浮物对中国对虾幼体48 h和96 h的半数致死浓度(48 h-LC50和96 h-LC50)分别为452.21 mg/L和183.74 mg/L，对应的安全浓度为18.37 mg/L。镜检观察结果显示，中国对虾幼体体表有底泥附着，鳃内有大量的悬浮物颗粒物。该研究为深入研究悬浮物对海洋生物的毒性效应提供了理论依据。

英文摘要:

      With the development of marine resources in coastal areas, marine engineering affects the growth and development of marine animals. Acute toxicity of suspended solids with different concentrations on Fenneropenaeus chinensis larvae was evaluated by the semi-static method. The results showed that high concentrations of suspended solids inhibited the swimming ability of Fenneropenaeus chinensis larvae. The 48 h-LC50 and 96 h-LC50 values of suspended solids to suspension was 452.21 mg/L and 183.7 mg/L, respectively, and the safe concentration was 18.37 mg/L. The microscopic examination showed that the Fenneropenaeus chinensis larvae body surface sediment had a large quantity of suspended particulate matter in the gills. This study provides a theoretical foundation for an understanding of the toxic effects of suspended solids on marine animals.