title: [Investigating the toxicity characteristics of Nassarius Sp. in Ningbo City].
abstract: OBJECTIVE
  To study the type, distribution, the growth and decline of toxins in Nassarius Sp. and the source of toxins to acquire the basis for the control of Nassarius Sp. poisonings.
  
  
  METHODS
  The toxicity of Nassarius Sp. was detected by mouse bioassay. The saxitoxin (STX), gonyau toxin (GTX), and tetrodo toxin (TTX) were detected by ELISA and HPLC.
  
  
  RESULTS
  Sixty-three poisonous Nassarius Sp. were identified in 127 samples collected from long-term monitoring sites. The detection rate was 49.6%. The detection rate of poisonous Nassarius Sp. was different in varies habitats (P < 0.01). The toxicity of Nassarius Sp. reached a peak in 1991 and hit the rock bottom in 1988. The rate of carrying toxins and the toxicity of detected toxins (STX, GTX and TTX) in Nassarius semiplicatus, Nassa succincta A. Adams and Niotha livescens were high.
  
  
  CONCLUSIONS
  The toxins of Nassarius Sp. in Ningbo City were composed of TTX, STX or GTX, or both TTX and STX. The surveillance proved that some toxins present in Nassarius Sp. in Ningbo City. Poisoning could be caused by eating Nassarius Sp.
authors: Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China. xujy@nbcdc.org.cn
authors: Jingye
authors: J
authors: Xu
authors: Guozhang
authors: G
authors: Xu
authors: Luming
authors: L
authors: Ye
authors: Pinzhang
authors: P
authors: Qin
authors: Danbiao
authors: D
authors: Hu
authors: Peng
authors: P
authors: Yan
authors: Chunguang
authors: C
authors: Jin
authors: Mei
authors: M
authors: Yu
mesh_terms: D000818:Animals; D001681:Biological Assay / Q000379:methods; D002681:China; D049851:Gastropoda / Q000378:metabolism / Q000472:pathogenicity; D051379:Mice; D008974:Mollusca / Q000378:metabolism* / Q000472:pathogenicity; D012530:Saxitoxin / Q000031:analogs & derivatives* / Q000032:analysis*; D012758:Shellfish; D057096:Shellfish Poisoning; D013779:Tetrodotoxin / Q000032:analysis*
chemical_list: D012530:Saxitoxin; D013779:Tetrodotoxin; C013007:gonyautoxins