Field molluscicidal effect of water-free formulations of niclosamide ethanolamine salt against Oncomelania hupensis snails in a marshland
10.16250/j.32.1374.2018110
- VernacularTitle:杀螺胺乙醇胺盐不同“干”施剂型江滩现场灭螺效果
- Author:
Qiang ZHOU
1
;
Li-Xin WAN
1
;
Qi-Hui YOU
1
;
Jun YOU
1
;
De-Rong HANG
2
;
Yi-Xin HUANG
2
Author Information
1. Pukou District Center for Disease Control and Prevention, Nanjing City, Jiangsu Province, Nanjing 210031, China
2. Key Laboratory of National Health Commission on Parasitic Disease Control and Prevention, Jiangsu Provincial Key Laboratory on Parasite and Vector Control Technology, Jiangsu Institute of Schistosomiasis, China
- Publication Type:Journal Article
- Keywords:
Oncomelania hupensis;
Niclosamide ethanolamine salt;
Dustable powder;
Powder-granule;
Granule (GR);
Molluscicidal effect;
Marshland
- From:
Chinese Journal of Schistosomiasis Control
2018;30(4):443-445
- CountryChina
- Language:Chinese
-
Abstract:
To evaluate the molluscicidal effects of various water-free formulations of niclosamide ethanolamine salt against Oncomelania hupensis in the field of marshlands along the Yangtze River.The river beach with O. hupensis snails were selected as the test field in the marshland along the Yangtze River in Pukou District, Nanjing City. A molluscicidal experiment was carried out by the mechanical dusting method with the dustable powder (DP), powder-granule (PG), granule (GR) of niclosamide ethanolamine salt respectively. The snail mortality, corrected mortality, and the reduced rate of snails’ density were parallel compared among DP, PG and GR.On the 3rd day after the dusting, the snail mortality rates were 66.67%, 67.24%, and 66.87% in the DP, PG, and GR groups respectively, on the 7th day after the dusting, the snail mortality rates were 75.36%, 79.73%, and 73.97% in the DP, PG, and GR groups respectively, and there was no significant difference among the groups (χ2 = 0.006, 0.895, both P > 0.05). On the 15th day after the dusting, the snail mortality rates were 86.92%, 72.86%, and 71.43% in the DP, PG, and GR groups respectively, and there was a significant difference among the groups (χ2 = 9.709, P < 0.01). The snail mortality in the DP group was significantly higher than that in the PG, and GR groups. The curves of the snail corrected mortality and reduced rate of snails’density presented steadily rising trends in the DP group, but presented falling trends in the PG and GR groups on the 15th day after the dusting.The molluscicidal effect of DP is stable and effective in the marshland along the Yangtze River, but the drift of the powder is still not effectively controlled. It is necessary that the different dosage forms are perfected.
