A stochastic model for simulation of interactions between phytophagous spider mites and their phytoseiid predators

Dennis Keith Pearl, Robert Bartôszyński, David J. Horn

Research output: Contribution to journalArticle

9 Scopus citations


A stochastic predator/prey model describing the interaction between Tetranychus urticae and Phytoseiulus persimilis in investigated via computer simulations and pilot experiments on Lima beans in a greenhouse. Most demographic events, including predation, death due to unknown causes, dispersal, and oviposition, are modelled as stochastic processes. Transitions from eggs to nymphs and from nymphs to adults are deterministic, as are management decisions (release of predators and application of miticide). Computer simulations provide adequate and realistic representations of biological processes, and the model shows stability over a range of inputs. Experimental validation of the model continues. Predictions of the model for optimal predator release or optimal timing of acaricide application have yet to be tested experimentally.

Original languageEnglish (US)
Pages (from-to)143-151
Number of pages9
JournalExperimental & Applied Acarology
Issue number2
Publication statusPublished - Jul 1 1989


All Science Journal Classification (ASJC) codes

  • Ecology
  • Insect Science

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