中国寄生虫学与寄生虫病杂志 ›› 1992, Vol. 10 ›› Issue (1): 1-4.

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中国大陆日本血吸虫品系的研究 Ⅶ.五地隔离群的遗传变异及分化

何毅勋,李新武   

  1. 中国预防医学科学院寄生虫病研究所; 中国预防医学科学院流行病学微生物学研究所
  • 出版日期:1992-02-28 发布日期:2017-01-09
  • 基金资助:
    国家自然科学基金

STUDIES ON THE STRAIN DIFFERENCES OF SCHISTOSOMA JAPONICUM IN THE MAINLAND OF CHINA VII.GENETIC VARIATION AND DIFFERENTIATION OF FIVE ISOLATES

  • Online:1992-02-28 Published:2017-01-09

摘要: 本文列出了中国大陆安徽、湖北、广西、四川、云南5地日本血吸虫自然隔离群体中多态位点上的等位基因频率和杂合度。根据9个基因位点计算了中国大陆5地日本血吸虫的遗传距离(D)为0.001—0.039,遗传一致性(I)为0.962—0.999。平均基因杂合度(H)为0.332。说明它们的基因结构基本相似,亲缘关系密切。从遗传距离作出的树状图形象地表示了各地自然群体的相对进化关系。

关键词: 日本血吸虫, 遗传距离, 遗传变异, 遗传分化

Abstract: Electrophoretic techniques have been used to survey five different field-collected isolates (i.e.,Anhui,Hubei,Guangxi,Sichuan and Yunnan) of S.japonicum from the mainland of China for genetic variation at 7 isozymes markers representing 9 loci.Polymorphic loci were observed for LDH-1,LDH-2,MDH and PGM,respectively,the proportion of polymorphic loci being 44.4%.Average heterozygosity varied between 0.223 and 0.425,with a mean of 0.332.Nei's genetic distance (D) among the populations of 5 isolates gave values between 0.001 and 0.039 with an average of 0.023,indicating that these isolates are very closely rehted.