MOLLUSCICIDAL EFFECT OF B002 AND ITS SYNERGISM COMBINED WITH NICLOSAMIDE

The study reported the molluscicidal effect of B002 and the synergism of B002 combined with niclosamide. The results showed that molluscicidal rate was 100%,when the concentra- tion of B002 was 6. 25mg/L. But the concentration of B002 was below 0. 39mg/L,there was no molluscicidal effect LD50 of B002 was 0. 8183mg/L. LD,. of niclosamide was 0.082mg/L. But LD50 of niclosamide mixed with 0.4mg/L of B002 declined to 0.0215mg/L. The mollusci- cidal rate wouId be 100% at 0.070mg/L of niclosamide mixed with B002. The molluscicidal effect raised by 3. 28 times. B002 mixed with niclosamide in 0.5: 1, 1: 1,2: 1,the cotoxicity co-effecient (CTC) were 127. 5, 167. 3 and 227.0,respectively It indicated that B002 was a synergist for molluscicidal effect of niclosamide.