title: [Simulation experiment of survival and reproduction of artificially imported Oncomelania snails in Qingpu District, Shanghai].
abstract: OBJECTIVE
  To understand the survival of imported Oncomelania snails in new environments with different densities in waterway net region, Qingpu District, Shanghai.
  
  
  METHODS
  The snails collected from Guichi, Anhui Province were put into the ponds of 4 square meters and each had 25, 50, 100, 200, 400 and 800 pairs of snails, respectively. During the next 2 years, the temperature, humidity, the activities of snails and their second birth snails were investigated each day. All the data were analyzed statistically.
  
  
  RESULTS
  The highest number of snails appeared from May to June on the surface of soils in different densities. The average numbers of snails were 2.0%-12.7% of whole put in snails, and the numbers of offspring were less than 2% of the whole put in snails.
  
  
  CONCLUSIONS
  The survival and reproduction of artificially imported Oncomelania snails from Guichi, Anhui Province is not good in Qingpu District, Shanghai.
authors.affiliation: Qingpu District Center for Disease Control and Prevention, Shanghai City, Qingpu 201700, China.
authors.forename: Jian-Guo
authors.initials: JG
authors.lastname: Tian
authors.forename: Gui-Fu
authors.initials: GF
authors.lastname: Li
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Xiao-Ping
authors.initials: XP
authors.lastname: Zhang
authors.forename: Yan-Jun
authors.initials: YJ
authors.lastname: Jin
authors.forename: Li
authors.initials: L
authors.lastname: Cai
authors.forename: Li-Xia
authors.initials: LX
authors.lastname: Peng
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Xu
authors.forename: Rui-Fang
authors.initials: RF
authors.lastname: Xu
mesh_terms: D000818:Animals; D002681:China; D005260:Female; D008297:Male; D012098:Reproduction; D012908:Snails / Q000254:growth & development / Q000502:physiology*