Mansour N S, Soliman G N, El-Assal F M
Z Parasitenkd. 1984;70(3):345-57. doi: 10.1007/BF00927821.
Golden hamsters were superinfected simultaneously with 100 Schistosoma haematobium cercariae, 1 and 3 weeks after initial infection with 100 S. mansoni cercariae. Results indicate that there was a higher degree of resistance to superinfection with S. haematobium at 1 week following initial infection with S. mansoni than that produced in the other two superinfections. This resistance was evidenced by a reduction in the number and size of worms of both species, decrease in S. haematobium egg extrusion per female and by a striking deviation in the egg distribution pattern of both species. Such an early host resistance was not recorded in previous works. Cross-mating was observed but no hybridization took place and the eggs produced were hatchable and typical of their species.
金黄地鼠在初次感染100条曼氏血吸虫尾蚴1周和3周后，同时再感染100条埃及血吸虫尾蚴。结果表明，在初次感染曼氏血吸虫后1周，对埃及血吸虫再感染的抵抗力程度高于其他两次再感染所产生的抵抗力。这种抵抗力表现为两种血吸虫的虫体数量和大小减少、每只雌虫的埃及血吸虫卵排出量减少以及两种血吸虫的虫卵分布模式出现显著偏差。此前的研究中未记录到这种早期宿主抵抗力。观察到了交叉交配，但未发生杂交，所产虫卵可孵化且具有其物种的典型特征。
