The Feeding Behavior of Hydra peseudoligactis

The Feeding behaviors were observed by microscopy when the Hydra peseudoligactis was grazed by the Stytaris fossularis dyed by neutral red. It is found that inter-boundary cell between Hydras had the function of distinguishing each other. The phagocytosis of Hydra was taken under the coordinating hypostone with stomach-range tissue.The stomach-range tissue was able to dilate laraely and produce strong absorbing force when Hydra swallowed foods, and the head of Hydra was absorbed into stomach with Stytaria fossularis sometimes, the tentacle also was absorbed into the stomach with foods. The seizing foods behavior always was found between Hydras or Hydra and bud with foods, the bigger Hydra often swallowed smaller one or buds with foods. The gladn cell in entodem of hypostome was able to digest foods,but it had no hurt effect to other Hydra. This paper also takes a discussion on some specially feeding behaviors of Hydra.