The role of carbohydrates in the biology of cestodes. VIII. Some conclusions and hypotheses

摘要: Abstract It is concluded that: (1) Tapeworms require a source of carbohydrate for growth and reproduction; this requirement satisfied by the utilization in host ingesta. The higher rate growth, greater apparent sensitivity to deficiency. (2) kinds carbohydrates which can be utilized vitro tapeworms are quite limited. Most species studied capable using only certain monosaccharides. Anoplocephalids may exceptional being able ferment disaccharides. (3) quality ingested has marked effects on rate, size attained, reproductive rates. explained terms interactions physiology physiological capacities worms. Certain carbohydrates, such as lactose, probably affect worms altering physicochemical characteristics habitat. (4) crowding effect cestode infections interpreted competition utilizable individual populations. (5) competitive one tapeworm another modified variations quantity host, different not affected proportionally. (6) significance discussed (a) its uniqueness animal kingdom, (b) probable role cyclic changes tapeworms, (c) possible special distribution tapeworms.