摘要: Some selected examples of food-getting mechanisms in animal parasites are reviewed. The range adaptations includes: (1) mechanical devices for biting or sucking plus internal external digestive capacity, (2) capacities only, (3) no feeding and capacities. In the latter case, restricted to absorptive capacity. Available data on absorption briefly reviewed. Questions concerning food hosts posed, following analyzed demonstrate difficulties answering these questions: Fasciola , hookworms, Trichuris some nematode vertebrates.