Gajadhar A A, Tessaro S V
Health of Animals Laboratory, Agriculture and Agri-Food Canada, Saskatoon, Saskatchewan.
J Parasitol. 1995 Aug;81(4):593-6.
An experimental study was done to determine whether Elaphostrongylus cervi can be transmitted to common intermediate and definitive hosts indigenous to North America. First-stage larvae of E. cervi obtained from red deer (Cervus elaphus elaphus) in New Zealand developed to the infective third stage in snails (Triodopis multilineata) and slugs (Deroceros reticulatum). Two mule deer (Odocoileus hemionus) were inoculated orally with 102 or 406 third-stage larvae. One animal developed a patent infection on day 121 postinoculation (PI), and the other had numerous first-stage larvae in its lungs and colonic feces on 128 days PI when it was killed. A control red deer inoculated with 100 larvae began passing larvae on 119 days PI. Larval excretion was low and intermittent in the mule deer and during the first 4 wk of patency in the red deer. Both mule deer developed progressive neurological disease beginning on day 104 PI and had to be killed 4 or 7 wk later, respectively. The red deer remained clinically normal.
进行了一项实验研究，以确定鹿类圆线虫是否能传播给北美洲本土的常见中间宿主和终末宿主。从新西兰的马鹿（Cervus elaphus elaphus）获取的鹿类圆线虫第一期幼虫，在蜗牛（Triodopis multilineata）和蛞蝓（Deroceros reticulatum）体内发育为感染性第三期幼虫。给两只骡鹿（Odocoileus hemionus）经口接种102或406条第三期幼虫。一只动物在接种后第121天出现显性感染，另一只在接种后第128天被处死时，其肺和结肠粪便中有大量第一期幼虫。一只接种100条幼虫的对照马鹿在接种后第119天开始排出幼虫。骡鹿的幼虫排出量低且断断续续，马鹿在显性感染的前4周也是如此。两只骡鹿在接种后第104天开始出现进行性神经疾病，分别在4周或7周后不得不被处死。马鹿在临床上保持正常。
