Hammond J A, Fielding D, Nuru H
Centre for Tropical Veterinary Medicine, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Roslin, Midlothian, UK.
Vet Res Commun. 1994;18(5):359-65. doi: 10.1007/BF01839286.
Attention is drawn to the limitations of conventional methods of controlling important trematode infections such as schistosomosis and fasciolosis. Plant molluscicides could have a role in the future control of these infections. There are, however, major problems with most plant molluscicides in that their use is labour-intensive, in many cases relatively skilled workers are required, they must be applied regularly and arable land may be required for their cultivation. Thus, little progress is to be expected until plant species with sustainable self-delivery systems are identified. Eucalyptus is proposed as a likely candidate. The leaves of many species in this genus have molluscicidal properties and their intermittent fall could effect self-delivery if the trees were planted in appropriate places. Relatively little work has been carried out on this possibility and much more is necessary, especially field trials. Before field trials are started, more laboratory testing is also necessary to determine the LC50 values for different snail species and to study toxicity to non-target organisms.
请注意控制重要吸虫感染（如血吸虫病和肝片吸虫病）的传统方法存在局限性。植物杀螺剂在未来这些感染的控制中可能会发挥作用。然而，大多数植物杀螺剂存在重大问题，因为其使用劳动强度大，在许多情况下需要相对熟练的工人，必须定期施用，且可能需要耕地来种植。因此，在确定具有可持续自我投放系统的植物物种之前，预计进展甚微。桉树被认为是一个可能的候选物种。该属许多物种的叶子具有杀螺特性，如果将这些树种在合适的地方，其叶子的间歇性掉落可能实现自我投放。关于这种可能性的研究相对较少，还需要做更多工作，尤其是进行田间试验。在开始田间试验之前，还需要进行更多实验室测试，以确定不同螺类物种的半数致死浓度（LC50）值，并研究对非目标生物的毒性。
