期刊论文

Combined Toxicity Effect of Methamiclophos and Cypermethrin to Scenedesmus Obliquus

中文

农业环境科学学报

Journal of Agro-Environment Science( J. Agro-Environ. Sci.)

1672-2043

2007

24

2

718-722

10.3321/j.issn:1672-2043.2007.02.060

本校为第一机构

为进一步探讨自然生态环境中农药残留对藻类的复合毒性，并为国家监测水质提供相应参考，采用人工光照培养箱室内培养方法。研究了甲胺磷、氯氰菊酯及其混合物对斜生栅藻的毒性。结果显示，甲胺磷、氯氰菊酯对斜生栅藻96h的Ecm分别为12-31、45．75mg·L^-1；甲胺磷在一定程度上抑制了氯氰菊酯的毒性，使混合农药对斜生栅藻生长的毒性表现为拮抗效应；氯氰菊酯对叶绿素b的影响大于甲胺磷。对叶绿素a的影响小于甲胺磷。

Based on the toxicity effect of methamiclophos and cypermethrin on Scenedesmus obliquus KUtz separately, the combined toxicity effect of methamiclophos and cypermethrin was studied. It was demonstrated that the growth rate of S.obliquus varied with the corresponding pesticide concentrations and its growth was disconnected with the mitosis thus some abnormal cells were formed. The 96 h EC50 values of methamiclophos and cypermethrin were determined by detecting the cell density of the S.obliquus cells at different concentrations of methamiclophos...