MORPHOLOGY AND LIFE-CYCLE OF SCHISTOSOMA-SINENSIUM PAO, 1959, FROM NORTHWEST THAILAND
MORPHOLOGY AND LIFE-CYCLE OF SCHISTOSOMA-SINENSIUM PAO, 1959, FROM NORTHWEST THAILAND
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DOI：
10.2307/3282945
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发表时间：
1989-02-01
影响因子：
1.3
通讯作者：
LOHACHIT, C
中科院分区：
文献类型：
--
作者：
GREER, GJ;KITIKOON, V;LOHACHIT, C
中华血吸虫（Schistosoma sinensium Pao，1959）是首次从中国四川省的一种未鉴定的蜗牛中分离出来的，并根据从实验感染的小鼠中回收的蠕虫和卵进行了描述。结果表明，在该地区发现了蜗牛（Tetricula bollingi Davis）和啮齿动物（Rattus rattus（L.）和被S.泰国西北部芳附近的一种竹。从紧邻小肠的小静脉中回收蠕虫。感染后25天，虫卵首次出现在实验感染小鼠的粪便中。尾蚴首先出现在实验感染的T。bollingi感染后40天。出现后不久，在水面上发现了尾蚴，它们的身体平放在弯月面上，尾巴自由地悬挂在水柱中。我们对自然感染宿主的成虫和卵的形态测量结果与原始描述中的结果一致。这种亚洲龙的卵上出现了侧刺，这对S的亲缘关系造成了一些混乱。sinensium。从螺类宿主、尾蚴行为、地理分布、生活史形态等8个特征阶段的比较表明，中华钉螺是中华钉螺的主要类群。sinensium与S. japonicum Katsurada对S. mansoni Sambon。
Schistosoma sinensium Pao, 1959, was first isolated from an unidentified snail in Szechuan Province, China, and was described on the basis of adult worms and eggs recovered from experimentally infected mice. We discovered snails, Tricula bollingi Davis, and rodents, Rattus rattus (L.) and Crocidura attenuata Milne-Edwards, infected with S. sinensium near Fang in northwest Thailand. Adult worms were recovered from small veins immediately adjacent to the small intestine. Eggs first appeared in the feces of experimentally infected mice at 25 days postinfection. Cercariae first emerged from experimentally infected T. bollingi at 40 days postinfection. Shortly after emerging, cercariae were found at the water surface, their bodies flat against the meniscus and tails hanging free in the water column. Our morphometric results for adults and eggs from naturally infected hosts agree well with those presented in the original description. The occurrence of a lateral spine on the egg of this Asian schistosome has created some confusion as to the affinities of S. sinensium. A comparison of 8 character stages, including snail hosts, cercarial behavior, geographical distribution, and morphology of life cycle stages, indicates that S. sinensium is more closely related to S. japonicum Katsurada than it is to S. mansoni Sambon.