Competition of two suspension-feeding protozoan populations for a growing bacterial population in continuous culture

Basil Baltzis, A. G. Fredrickson

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Mathematical studies for ecosystems involving 2 predators competing for a growing prey population have shown that the 2 competitors can coexist in a state of sustained oscillations for a range of values of the system parameters. For the case of 1 suspension-feeding protozoan population, recent experimental observations suggest that the predator-prey interaction is complicated by the ability of the bacteria to grow on products produced by the lysis of protozoan cells. This situation is studied here for the case where 2 suspension-feeding protozoan populations compete for a growing bacterial population in a chemostat. Computer simulations show that the 2 protozoan populations can coexist over a range of the operating parameters. Some necessary conditions for coexistence are presented as are some speculations regarding the possible physical explanations of results.

Original languageEnglish (US)
Pages (from-to)61-68
Number of pages8
JournalMicrobial Ecology
Volume10
Issue number1
DOIs
StatePublished - Mar 1 1984
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Soil Science

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