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本文报告了云南大理地区675条日本血吸虫成虫的观察和测量结果,并对若干变异作了描述。虫体从家兔及小白鼠体内得到,虫龄为35～62天。雄虫平均大小为14.26×0.40mm,雌虫平均大小16.51×0.24mm;睾丸平均大小为152×108μ,后端末个睾丸通常比前端第一个睾丸大;卵巢平均大小为543×133μ,子宫内含卵数平均为86.3个,但都存在着虫体之间的差异。睾丸排列有串列及非串列两种形式,前者占52.9%,后者占47.1%;少于7个睾丸的虫体多为串列,多于7个睾丸的多为非串列。睾丸数为3～9个。具有7个睾丸的虫体占41.4%,6个睾丸的占29.1%,5个的占20.7%,多于7个睾丸的虫体很少,仅占6.5%。睾丸数的这种变异,与过去的报告有所不同。发现异位睾丸的虫体11条,占观察数1.9%,雌虫除存在螺旋状卵巢及额外卵巢外,还见到先前未有报告的长条卵巢及节段卵巢,这些变异卵巢占观察数的13.6%,从小白鼠体内获得2条两性同体雄虫及2条雄虫同性合抱以及7条异性多虫合抱样本,后者是以前观察者未报告过的。此外,还见到18条肠支变异的雄虫。
This paper reports the observations and measurements of 675 adult worms from Schistosoma japonicum in Dali, Yunnan Province, and describes some of the variations. Insects obtained from rabbits and mice body, pest age 35 to 62 days. The average size of the male was 14.26 × 0.40mm, the average size of the female was 16.51 × 0.24mm; the average size of the testis was 152 × 108μ, the last testis was larger than the first testis; the average ovary size was 543 × 133μ, The average number of eggs containing 86.3, but there are differences between the parasites. Testicular arranged in tandem and non-tandem two forms, the former accounted for 52.9%, the latter accounted for 47.1%; less than 7 testicular parasites mostly tandem, more than 7 testicular mostly non tandem. Testicular number is 3 to 9. Insects with 7 testes accounted for 41.4%, 6 testes accounted for 29.1% and 5 accounted for 20.7%. More than 7 testes had very few parasites, accounting for only 6.5%. This variation in the number of testes is different from the past reports. Found ectopic testicular parasites 11, accounting for 1.9% of the observed number, in addition to the existence of the female spiral ovary and additional ovaries, but also seen previously unreported long ovary and segmental ovaries, these variations accounted for the number of ovarian observation Of the 13.6%. Two male and two male homosexual males were obtained from the mice and seven heterosexual bugs were caught, which were not reported by the previous observers. In addition, there are 18 male members of the intestinal branch variation.