The interface between air and water: a perturbation source eliciting adaptive behaviour in ciliates.

@article{Ricci1992TheIB,
  title={The interface between air and water: a perturbation source eliciting adaptive behaviour in ciliates.},
  author={N. Ricci and F. Erra and A. Russo and R. Banchetti},
  journal={The Journal of protozoology},
  year={1992},
  volume={39 4},
  pages={
          521-5
        }
}
Interference with the water-air interface, both direct (by contact with a flat, rigid surface) and indirect (by inducing a meniscus) caused the ciliated protozoa we investigated to actively collect in the water column or on the substrate directly under the area of altered surface tension. A crowding effect is observed in this "rest area" reaching plateau values within one hour after onset of the experiment. The simple experimental procedures described here induced analogous behaviour in both… Expand
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