This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Copyright Information Books from ASM Press MicrobeWorld Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Tsuchiya, H. M. Articles by Fredrickson, A. G. Search for Related Content PubMed PubMed Citation Articles by Tsuchiya, H. M. Articles by Fredrickson, A. G.

Predator-Prey Interactions of Dictyostelium discoideum and Escherichia coli in Continuous Culture¹

^a Department of Chemical Engineering and Materials Science, Department of Microbiology, University of Minnesota, Minneapolis, Minnesota 55455

ABSTRACT

Dictyostelium discoideum and Escherichia coli were aerobically propagated in mixed continuous culture in a predator-prey relationship, and the effects of temperature and holding times were examined. Oscillations developed in the concentration of glucose, the limiting substrate for E. coli, and in the densities of the two populations, but eventually steady-state populations were reached. The experimental data were analyzed according to the Lotka-Volterra model for prey-predator relationships and by the Monod model for saturation kinetics. A comparison of the adequacy of the two models in describing predation is given.

¹ Presented in part at the 158th Meeting of the American Chemical Society, New York, 1969.