Grytner-Ziecina B
Zakład Biologii Ogólnej i Parazytologii AM, Warszawa.
Wiad Parazytol. 1996;42(2):181-4.
Two species of ostracods: Heterocypris incongruens and Cypridopsis vidua were used as experimental intermediate hosts for Sobolevicanthus gracilis, with Anas platyrhynchos dom. and Gallus gallus as the two experimental final hosts. Three series of fourth-fold passages: in hens, from hens to ducks, and back into hens--via ostracods--were accomplished. The fourth series of passages--in turn to ducks--was carried out for confirmation the results obtained. The index of infective activity was calculated for each experimental series. It has been stated that the infective activity of oncospheres to H. incongruens differed from final host species to species, being clearly higher in larvae from hens then from ducks. No differences of the index depended on final host species were noticed in relation to C. vidua. The possible explanations of the results are discussed.
异形异足介虫（Heterocypris incongruens）和维氏美星介虫（Cypridopsis vidua）作为纤细索氏吸虫（Sobolevicanthus gracilis）的实验中间宿主，以家鸭（Anas platyrhynchos dom.）和家鸡（Gallus gallus）作为两种实验终末宿主。完成了三个系列的四倍传代：在母鸡体内传代，从母鸡传至鸭子，再通过介形虫回到母鸡体内。进行了第四个系列的传代——再传至鸭子——以证实所获得的结果。计算了每个实验系列的感染活性指数。结果表明，六钩蚴对异形异足介虫的感染活性因终末宿主种类而异，来自母鸡的幼虫的感染活性明显高于来自鸭子的幼虫。在维氏美星介虫方面，未观察到感染活性指数因终末宿主种类而产生差异。讨论了这些结果的可能解释。
