An osmoregulatory basis for shape oscillations in regenerating hydra.

@article{Kcken2008AnOB,
  title={An osmoregulatory basis for shape oscillations in regenerating hydra.},
  author={Michael K{\"u}cken and Jordi Soriano and Pramod A. Pullarkat and Albrecht Ott and Ernesto M. Nicola},
  journal={Biophysical journal},
  year={2008},
  volume={95 2},
  pages={978-85}
}
The freshwater polyp Hydra has considerable regeneration capabilities. A small fragment of tissue excised from an adult animal is sufficient to regenerate an entire Hydra in the course of a few days. During the initial stages of the regeneration process, the tissue forms a hollow sphere. Then the sphere exhibits shape oscillations in the form of repeated cycles of swelling and collapse. We propose a biophysical model for the swelling mechanism. Our model takes the osmotic pressure difference… CONTINUE READING