Pitchford R J, Visser P S
Onderstepoort J Vet Res. 1981 Dec;48(4):181-4.
Adults of Schistosoma edwardiense Thurston, 1964, were recovered from Hippopotamus amphibius in the Kruger National Park. Small round to oval Schistosoma margrebowiei-like eggs, presumed to be those of S. edwardiense, were found fairly frequently in the faeces of infected hippopotami together with a few Schistosoma haematobium-like eggs the identity of which remains uncertain. Biomphalaria sp., exposed to the droppings of infected hippopotami, shed cercariae thought to be those of S. edwardiense. No evidence of schistosoma adults was found at necropsy in rodents exposed to these cercariae. The parasite appears to be host specific to the hippopotamus. Arguments, based on biological and anatomical characteristics are put forward regarding Schistosoma hippopotami Thurston, 1963 as synonymous with Schistosoma mansoni.
1964年，瑟斯顿在克鲁格国家公园的河马体内发现了爱德华氏血吸虫成虫。在受感染河马的粪便中相当频繁地发现了小的圆形至椭圆形、类似马格雷博维血吸虫的虫卵，推测为爱德华氏血吸虫的虫卵，同时还发现了一些类似埃及血吸虫的虫卵，其身份仍不确定。暴露于受感染河马粪便中的双脐螺属释放出被认为是爱德华氏血吸虫的尾蚴。在接触这些尾蚴的啮齿动物尸检中未发现血吸虫成虫的证据。这种寄生虫似乎对河马具有宿主特异性。基于生物学和解剖学特征，有人提出1963年的河马血吸虫与曼氏血吸虫同义。
