STUDY ON MOLLUSCICIDAL EFFECT OF NICLOSAMIDE ETHANOLAMINE SALT DUSTABLE POWDER AGAINST ONCOMELANIA HUPENSIS IN MARSHLAND OF YANGTZE RIVER AHEAD OF SCHEDULE IN SPRING
- VernacularTitle:氯硝柳胺乙醇胺盐粉剂江滩春季提前灭螺效果研究
- Author:
Yixin HUANG
;
Leping SUN
;
Qingbiao HONG
;
Kun YANG
;
Yuji JIANG
;
Weiping XI
;
- Publication Type:Journal Article
- Keywords:
Niclosamide ethanolamine salt;
Dusta ble powder;
Oncomelania hupensis;
Temperature;
Snail control
- From:
Chinese Journal of Schistosomiasis Control
1991;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the eff ec t of snail control with niclosamide ethanolamine salt dustable powder (DP) in th e marshland of the Yangtze River ahead of the schedule in spring, and to underst and the impact of the low temperature to molluscicidal effect of the dusting. Methods The snail control test with niclosamide ethanolamine salt dustable powder was carried out under different te mperatures in laboratory. Then the snail control was undertaken in the marshland of the Yangtze River ahead of the schedule in spring, and the molluscicidal ef fect was observed and the temperature changes were also considered. Results When the temperature was 15 ℃ and 25 ℃ respectively, there was no significant difference on the molluscicidal effec t of niclosamide ethanolamine salt DP in laboratory. The average atmosphere temp erature in each day was 8.9-16.3 ℃ from the last ten-day of March to the fir st ten-day of April in Nanjing regions. The corrected mortality of snails and the r educed rates of density of snails were 95.38% and 99.97% respectively on the s ur face of the soil in the marshland field. The corrected mortality and the reduced rates of density of snails were 79.30% and 70.59% respectively in the surface l ayer of the soil. Conclusion The impact of air t emperature is little to the molluscicidal effect of niclosamide ethanolamine sal t DP when the average atmosphere temperature in each day was 10-15 ℃ in the ma r shland of the Yangtze River. If the snail control is undertaken ahead of the sch edule in spring, the reproduction of snails will be suppressed and the infection of Schistosma japonicum will be controlled. [
