Saha Suchismita, Kaviraj Anilava
Department of Zoology, University of Kalyani, Kalyani, India.
Int J Toxicol. 2003 Jul-Aug;22(4):325-8. doi: 10.1080/10915810305122.
Lethal concentrations of cypermethrin, dissolved either in water or acetone, were determined for freshwater catfish Heteropneustes fossilis at different hours of exposure by static bioassays. Up to 48 hours, there was no difference between LC(50) values of aqueous and acetone solublized cypermethrin. Seventy-two-hour LC(50) values of aqueous cypermethrin and acetone solublized cypermethrin to H. fossilis were 0.67 and 1.27 microg/L, respectively. Lethal values remained unchanged beyond 72 hours. The fish exposed to even lower concentration of cypermethrin (0.5 microg/L) showed hyperactivity.
通过静态生物测定法，测定了淡水鲶鱼（印度胡鲶）在不同暴露时间下，氯氰菊酯溶解于水或丙酮中的致死浓度。在长达48小时的时间里，水相和丙酮溶解的氯氰菊酯的半数致死浓度（LC50）值没有差异。水相氯氰菊酯和丙酮溶解的氯氰菊酯对印度胡鲶的72小时半数致死浓度分别为0.67和1.27微克/升。72小时后致死值保持不变。暴露于甚至更低浓度氯氰菊酯（0.5微克/升）的鱼表现出活动亢进。
