Behaviour ofdictyostelium discoideumamoebae andEscherichia coligrown together in chemostat culture
✍ Scribed by Vija E. Dent; Michael J. Bazin; Peter T. Saunders
- Book ID
- 104770042
- Publisher
- Springer
- Year
- 1976
- Tongue
- English
- Weight
- 616 KB
- Volume
- 109
- Category
- Article
- ISSN
- 0302-8933
No coin nor oath required. For personal study only.
✦ Synopsis
When Dictyostelium discoideum amoebae and Escherichia coli were grown together in chemostat culture damped oscillations in the population densities of the organisms occurred followed by a sudden increase in bacterial numbers and a concommitant decrease in the number of amoebae. After the system had come to equilibrium altering the dilution rate resulted in a monotonic change in the experimental variables to new steady state levels. A square wave increase in the concentration of limiting nutrient in the feed medium during the oscillatory phase of culture produced a sinusoidal response indistinguishable from that prior to the perturbation. The results are more complicated than those predicted by simple models of microbial predator-prey dynamics although they correspond most nearly to models which incorporate saturation kinetics.