[Theory of the relationship of the types of feeding and digestion in blood-sucking arthropods and their ability to be specific vectors of the causative agents of transmissible infections].

An attempt has been made to relate the ability of bloodsucking arthropods to be specific vectors of different groups of agents to such properties of digestive system of blood-suckers as the type of food consumption on larval and imaginal phases, composition of food consumed by larva and imago, structure of intestinal epithelium in adult arthropods and speed of blood digestion process.