人类、家畜及野生动物体内鞭虫卵形态特征之比较研究

摘要

鞭虫具有世界性之分布,多流行于热带、亚热带及卫生状况较差之地区.虫体形体似鞭状,故称鞭虫.虫体呈棕黄色后端较粗,长3～5 cm,雌虫较长.虫体后端含有肠道及生殖器官.大便中桶状虫卵为诊断之特征.成虫及虫卵之形体与人体者类似,惟家畜及野生动物则具有不同之特征.雌虫(35～55 cm)较雄虫(30～45 cm)长.一雌虫每天可产3000～70000虫卵.卵两端各有一凸出塞子,形体柠檬.大小为50-54×22-23 μm.%The whipworm,Trichuris trichiura,has a worldwide distribution but is more common in tropical and subtropical areas and in regions where sanitation is poor.The common name of whipworm is most descriptive,the thick posterior part of the body forming the stock,and the long thin anterior portion.The adult worma are from 3 to 5 cm long,the female worm is longer than the male worm.On the posterior part is pinkish gray and contains the intestine and reproductive organs. Diagnosis is by demonstraion of the characteristic barrel-shaped eggs (50-54 by 22-23μm)usually found in the stool.But their morphology of adult worms and eggs among the human,domestic and wild animals are quite different to diagnosis.The females are larger(35-55 mm long)than the males(30-45 mm).Each female worm can produce 3,000 to 70,000 eggs daily.The eggs are lemon-like with a plug at each end.Their size are 50-54 μm and 22-23 μm respetively.