title: [Molluscicidal effect of buried niclosamide sustained-release method in plateau mountainous areas].
abstract: OBJECTIVE
  To evaluate the molluscicidal effect of the buried niclosamide sustained-release method in Oncomelania snail-infested terraced environments of mountainous areas in Yunnan Province.
  
  
  METHODS
  A piece of relatively isolated snail-infested terraced environment was selected as experimental plot and randomly divided into four groups. The buried niclosamide sustained-release methods were performed in Group A, B, C with the doses of 6 g/m2, 12 g/m2, 24 g/m2 respectively, and Group D was sprayed with 50% niclosamide ethanolamine salt wettable powder (2 g/m2) as the control.
  
  
  RESULTS
  In Group C (with the buried niclosamide sustained-release method of 24 g/m2), the half-year reduction of living snail density was 89.90%, and one-year reduction of living snail density was 96.80%, which were significantly higher than those of Group D (40.35% and 59.11%) (Both P < 0.01) CONCLUSION: The buried niclosamide sustained-release method is effective and suitable for snail control in mountainous terrace areas.
authors.affiliation: Dali Prefectural Institute of Schistosomiasis Prevention and Control, Yunnan Province, Dali 671000, China.
authors.forename: Shang-Wei
authors.initials: SW
authors.lastname: Wang
authors.forename: Xing
authors.initials: X
authors.lastname: Xu
authors.forename: Wen-Xin
authors.initials: WX
authors.lastname: Dai
authors.forename: Xun
authors.initials: X
authors.lastname: Li
authors.forename: Shen-Hua
authors.initials: SH
authors.lastname: Zhao
authors.forename: Bao-Hua
authors.initials: BH
authors.lastname: Ma
authors.forename: Quan
authors.initials: Q
authors.lastname: Wang
authors.forename: Lin
authors.initials: L
authors.lastname: Yang
authors.forename: Qing-Ming
authors.initials: QM
authors.lastname: Kui
mesh_terms: D000818:Animals; D003692:Delayed-Action Preparations; D008975:Molluscacides; D009534:Niclosamide; D012908:Snails
chemical_list: D003692:Delayed-Action Preparations; D008975:Molluscacides; D009534:Niclosamide