中国寄生虫学与寄生虫病杂志 ›› 1999, Vol. 17 ›› Issue (6): 14-373.

• 论著 • 上一篇    下一篇

卫氏并殖吸虫童虫的生物学特性

严涛,李国良
  

  1. 江西医学院寄生虫学教研室,南昌 330006
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1999-12-30 发布日期:1999-12-30

BIOLOGICAL CHARACTERISTICS OF THE JUVENILE PARAGONIMUS WESTERMANI

YAN Tao;LI Guoliang

  

  1. Department of Parasitology;Jiangxi Medical College;Nanchang 330006
  • Received:1900-01-01 Revised:1900-01-01 Online:1999-12-30 Published:1999-12-30

摘要:   目的: 了解卫氏并殖吸虫童虫的生物学特性。方法: 从锯齿华溪蟹分离卫氏并殖吸虫囊蚴, 以每鼠80~150 个囊蚴感染小鼠和大鼠, 分别于感染后10~30 d 和80~580 d 分期解剖小鼠和大鼠, 检查虫体。观察童虫的寿命、在死亡宿主或5~8 ℃生理盐水中, 存活的时间及对新宿主的侵袭力。结果: 童虫的寿命较长, 大鼠于感染囊蚴580 d 死亡后检出的童虫仍可转种其它大鼠; 同样, 小鼠体内的童虫也可转种其它小鼠, 童虫寿命不受某一个体宿主寿命限制。在转续宿主间转换, 可延长童虫的寿命, 并保持其活力和侵袭力。死亡小鼠体内的童虫及低温保存的童虫, 仍有较强的活力与侵袭力。结论: 童虫具有较强的活力与侵袭力, 为卫氏并殖吸虫的感染期

关键词: 卫氏并殖吸虫, 童虫, 寿命, 侵袭力, 小鼠, 大鼠

Abstract:  AIM: To observe the biological characteristics of the juvenile of Paragonimus westermani. METHODS: Kunmin strain mice and Wistar rats inoculated orally with 100-150 metacercariae of Paragonimus westermani were autopsied 10-30 days and 80-580 days after infection, respectively. Life-span, survival time in dead hosts or physiological saline at 5℃ to 8 ℃ and invasiveness of juveniles to new hosts were detected by host transfer. RESULTS: All the worms recovered from the mice and rats were stunted juveniles. The worm detection rates in the mice and rats were 19.3% and 22.2%-37.5%, respectively. The life-span of the juveniles was rather long, being not limited by the life-span of a host. Host transfer could prolong longevity and preserve invasiveness. The juveniles recovered from dead mice still possess strong vitality and invasiveness. CONCLUSION: The juvenile of P.westermani is an infective stage, having strong vitality and invasiveness.\;

Key words: Paragonimus westermani, juvenile, life-span, invasiveness, mouse, rat.