An acarine predator‐prey metapopulation system inhabiting greenhouse cucumbers

An acarine predator‐prey metapopulation system inhabiting greenhouse cucumbers The two‐spotted spider mite (Tetranychus urticae) is a serious pest on greenhouse cucumbers, but can be controlled by the phytoseiid predator Phytoseiulus persimilis. The two mite species exhibit considerable fluctuations in overall population densities but within acceptable limits. The system appears to be persistent at a regional (greenhouse) scale in spite of frequent local extinctions (e.g. at individual plants). Experimental evidence indicates that the mites form a metapopulation system characterized by ‘shifting mosaic’ dynamics. A stochastic simulation model is used to analyse the role played by dispersal in the dynamics and persistence of the system. It shows that demographic stochasticity generates sufficient endogenous ‘noise’ to counteract the synchronizing effect of density‐dependent dispersal, provided dispersal rates are not too high and the system is not too small. Low dispersal rates, on the other hand, increase the risk of local outbreaks of spider mites that may cause destruction of plants. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Biological Journal of the Linnean Society Oxford University Press

An acarine predator‐prey metapopulation system inhabiting greenhouse cucumbers

Biological Journal of the Linnean Society, Volume 42 (1‐2) – Jan 1, 1991

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Publisher
Oxford University Press
Copyright
Copyright © 1991 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0024-4066
eISSN
1095-8312
DOI
10.1111/j.1095-8312.1991.tb00564.x
Publisher site
See Article on Publisher Site

Abstract

The two‐spotted spider mite (Tetranychus urticae) is a serious pest on greenhouse cucumbers, but can be controlled by the phytoseiid predator Phytoseiulus persimilis. The two mite species exhibit considerable fluctuations in overall population densities but within acceptable limits. The system appears to be persistent at a regional (greenhouse) scale in spite of frequent local extinctions (e.g. at individual plants). Experimental evidence indicates that the mites form a metapopulation system characterized by ‘shifting mosaic’ dynamics. A stochastic simulation model is used to analyse the role played by dispersal in the dynamics and persistence of the system. It shows that demographic stochasticity generates sufficient endogenous ‘noise’ to counteract the synchronizing effect of density‐dependent dispersal, provided dispersal rates are not too high and the system is not too small. Low dispersal rates, on the other hand, increase the risk of local outbreaks of spider mites that may cause destruction of plants.

Journal

Biological Journal of the Linnean SocietyOxford University Press

Published: Jan 1, 1991

References

  • Prey and predator emigration responses in the acarine system Tetranychus urticae‐Phytoseiulus persimilis
    BERNSTEIN, BERNSTEIN
  • Dispersal of the glasshouse red spider mite Tetranychus urticae Koch (Acarina, Tetranychidae)
    HUSSEY, HUSSEY; PARR, PARR
  • Observations on the control of Tetranychus urticae Koch on cucumbers by the predatory mite Phytoseiulus riegeli Dosse
    HUSSEY, HUSSEY; PARR, PARR; GOULD, GOULD
  • Location of distant spider mite colonies by phytoseiid predators: Demonstration of specific kairomones emitted by Tetranychus urticae and Panonychus ulmi
    SABELIS, SABELIS; BAAN, BAAN
  • Studying metapopulation effects in predator‐prey systems
    TAYLOR, TAYLOR
  • Biological and integrated control in greenhouses
    LENTEREN, LENTEREN; WOETS, WOETS

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