Dynamics ofPanonychus ulmi andTyphlodromus pyri: factors contributing to persistence

  title={Dynamics ofPanonychus ulmi andTyphlodromus pyri: factors contributing to persistence},
  author={S. Walde and J. Nyrop and J. Hardman},
  journal={Experimental & Applied Acarology},
  • S. Walde, J. Nyrop, J. Hardman
  • Published 2005
  • Biology
  • Experimental & Applied Acarology
  • We addressed the question of persistence of predator and prey in a biological control system by examining temporal patterns ofPanonychus ulmi (Koch) and its predator,Typhlodromus pyri Scheuten at two geographic locations and at two spatial scales. At the scale of an orchard, bothP. ulmi andT. pyri were persistent over the time frame of 6 years. At the scale of an individual tree,T. pyri appeared to be more persistent than its prey,P. ulmi. We used a simulation model of single populations ofP… CONTINUE READING
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