Mouahid A, Mone H
Laboratoire de Biologie Animale, U.R.A. No. 698, C.N.R.S., Perpignan, France.
Ann Trop Med Parasitol. 1990 Aug;84(4):341-8. doi: 10.1080/00034983.1990.11812478.
Histological observations of Bulinus truncatus naturally infected by both Schistosoma bovis and Echinoparyphium elegans in Sardinia (Italy) have shown that E. elegans is pathogenic to the mollusc and dominant to the schistosome. The larval stages, rediae and metacercariae, acted as compressors. Rediae, mainly the young and very motile ones, also behaved as predators. The organs of the mollusc were variably affected; the ovotestis totally disappeared. The larval development of the schistosome was disturbed; cercariogenesis was strongly inhibited and gave way to high sporocystogenesis. The intensity of this interference depended on the density of echinostome larvae present.
在意大利撒丁岛对自然感染了牛血吸虫和优美棘口吸虫的截形小泡螺进行的组织学观察表明，优美棘口吸虫对该软体动物具有致病性，且在感染上占主导地位。幼虫阶段，即雷蚴和尾蚴，起到了压迫作用。雷蚴，主要是年幼且活动活跃的雷蚴，也表现出捕食行为。该软体动物的器官受到了不同程度的影响；卵巢精巢完全消失。血吸虫的幼虫发育受到干扰；尾蚴形成受到强烈抑制，转而出现大量的胞蚴形成。这种干扰的强度取决于存在的棘口吸虫幼虫的密度。
