Rippling by Corallococcus coralloides.
(This organism used to be called Chondrococcus coralloides). Rippling,
or rhythmic oscillations is a unique and mysterious feature of the family
Myxococcaceae of the myxobacteria. It exemplifies the complex social behavior
of this group of bacteria. Rippling is a periodic movement of groups of
travelling ridges that usually occurs in the colony prior to aggregation.
In the first segment one can see the periodicity of the rippling. In the
second segment, the ripples can be observed at a higher magnification. Neither
the mechanism nor the function of rippling is understood.
more details, see "rippling".
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