Behavior and electrical activity in the hydrozoan Proboscidactyla flavicirrata (Brandt). I. The hydroid colony.

摘要: 1. P. flavicirrata feeds on material collected from the brachiolar food-grooves of host sabellid worm.2. The feeding cycle involves wiping tentacles through mouth. An abortive can also be seen when are not wiped mouth.3. frequency is in part controlled by activities worm.4. Tentacle contraction pulses and column electrical accompaniment to feeding. Their properties described.5. Colonial pulses, conducted epithelial cells at velocities between 1.9 7.3 cm/sec (13° C), cause protective retraction all individuals colony. varying response medusa buds as they develop described. colonial pulse conducting system fatigues rapidly after repetitive stimulation.6. continue propagate exposure excess Mg++ for 3 hr.