Changes of Internal Hydrostatic Pressure and Body Shape in Acanthocephalus Ranae
نویسنده
چکیده
Two hydraulic systems are primarily concerned in the movements of Acanthocephahis ranae (Schrank, 1788; Lvihe, 1911), that of the proboscis apparatus and that of the trunk (Hammond, 1966a). The muscles associated with each system operate about a fluid skeleton of constant volume. Muscular activity in either system, and therefore change of body shape, is accompanied by a change of hydrostatic pressure within the skeletal fluid. The present paper describes an investigation into the correlation between the movements of the animal and changes of hydrostatic pressure within it.
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